Common Weakness Enumeration
CWE-420
AllowedUnprotected Alternate Channel
Abstraction: Base · Status: Draft
The product protects a primary channel, but it does not use the same level of protection for an alternate channel.
71 vulnerabilities reference this CWE, most recent first.
CVE-2024-8038 (GCVE-0-2024-8038)
Vulnerability from cvelistv5 – Published: 2024-10-02 10:12 – Updated: 2024-10-02 13:53
VLAI
EPSS
VEX
Summary
Vulnerable juju introspection abstract UNIX domain socket. An abstract UNIX domain socket responsible for introspection is available without authentication locally to network namespace users. This enables denial of service attacks.
Severity
7.9 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/juju/juju/security/advisories/… | issue-tracking |
| https://www.cve.org/CVERecord?id=CVE-2024-8038 | issue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical Ltd. | Juju |
Affected:
3.5 , < 3.5.4
(semver)
Affected: 3.4 , < 3.4.6 (semver) Affected: 3.3 , < 3.3.7 (semver) Affected: 3.1 , < 3.1.10 (semver) Affected: 2.9 , < 2.9.51 (semver) |
Credits
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CVE-2024-6242 (GCVE-0-2024-6242)
Vulnerability from cvelistv5 – Published: 2024-08-01 15:15 – Updated: 2025-09-25 13:34
VLAI
EPSS
VEX
Title
Rockwell Automation Chassis Restrictions Bypass Vulnerability in Select Logix Devices
Summary
A vulnerability exists in Rockwell Automation affected products that allows a threat actor to bypass the Trusted® Slot feature in a ControlLogix® controller. If exploited on any affected module in a 1756 chassis, a threat actor could potentially execute CIP commands that modify user projects and/or device configuration on a Logix controller in the chassis.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-420 - Unprotected Alternate Channel
Assigner
References
1 reference
Impacted products
12 products
| Vendor | Product | Version | |
|---|---|---|---|
| Rockwell Automation | ControlLogix® 5580 (1756-L8z) |
Affected:
V28
|
|
| Rockwell Automation | GuardLogix® 5580 (1756-L8zS) |
Affected:
V31
|
|
| Rockwell Automation | 1756-EN4TR |
Affected:
V2
|
|
| Rockwell Automation | 1756-EN2T |
Affected:
v5.007(unsigned)/v5.027(signed)
|
|
| Rockwell Automation | 1756-EN2F |
Affected:
v5.007(unsigned)/v5.027(signed)
|
|
| Rockwell Automation | 1756-EN2TR |
Affected:
v5.007(unsigned)/v5.027(signed)
|
|
| Rockwell Automation | 1756-EN3TR |
Affected:
v5.007(unsigned)/v5.027(signed)
|
|
| Rockwell Automation | 1756-EN2T |
Affected:
1756-EN2T/D: V10.006
|
|
| Rockwell Automation | 1756-EN2F |
Affected:
1756-EN2F/C: V10.009
|
|
| Rockwell Automation | 1756-EN2TR |
Affected:
1756-EN2TR/C: V10.007
|
|
| Rockwell Automation | 1756-EN3TR |
Affected:
1756-EN3TR/B: V10.007
|
|
| Rockwell Automation | 1756-EN2TP |
Affected:
1756-EN2TP/A: V10.020
|
Date Public
2024-08-01 13:00
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CVE-2024-6099 (GCVE-0-2024-6099)
Vulnerability from cvelistv5 – Published: 2024-07-02 11:01 – Updated: 2026-04-08 17:03
VLAI
EPSS
VEX
Title
LearnPress – WordPress LMS Plugin <= 4.2.6.8.1 - Unauthenticated Bypass to User Registration
Summary
The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to unauthenticated bypass to user registration in versions up to, and including, 4.2.6.8.1. This is due to missing checks in the 'check_validate_fields' function in the checkout. This makes it possible for unauthenticated attackers to register as the default role on the site, even if registration is disabled.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-420 - Unprotected Alternate Channel
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| thimpress | LearnPress – WordPress LMS Plugin for Create and Sell Online Courses |
Affected:
0 , ≤ 4.2.6.8.1
(semver)
|
|
| thimpress | learnpress |
Affected:
0 , ≤ 4.2.6.8.1
(custom)
cpe:2.3:a:thimpress:learnpress:-:*:*:*:*:wordpress:*:* |
Credits
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CVE-2024-4444 (GCVE-0-2024-4444)
Vulnerability from cvelistv5 – Published: 2024-05-10 08:32 – Updated: 2026-04-08 17:21
VLAI
EPSS
VEX
Title
LearnPress – WordPress LMS Plugin <= 4.2.6.5 - Unauthenticated Bypass to User Registration
Summary
The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to bypass to user registration in versions up to, and including, 4.2.6.5. This is due to missing checks in the 'create_account' function in the checkout. This makes it possible for unauthenticated attackers to register as the default role on the site, even if registration is disabled.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-420 - Unprotected Alternate Channel
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| thimpress | LearnPress – WordPress LMS Plugin for Create and Sell Online Courses |
Affected:
0 , ≤ 4.2.6.5
(semver)
|
Credits
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CVE-2023-52718 (GCVE-0-2023-52718)
Vulnerability from cvelistv5 – Published: 2024-12-28 07:16 – Updated: 2024-12-28 16:09
VLAI
EPSS
VEX
Summary
A connection hijacking vulnerability exists in some Huawei home routers. Successful exploitation of this vulnerability may cause DoS or information leakage.(Vulnerability ID:HWPSIRT-2023-34408)
This vulnerability has been assigned a (CVE)ID:CVE-2023-52718
Severity
6.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-420 - Unprotected Alternate Channel
Assigner
References
1 reference
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Huawei | PT9030-15 |
Affected:
3.0.3.266
|
|
| Huawei | WS7206-10 |
Affected:
11.0.5.19
Affected: 2.1.0.203 |
|
| Huawei | WS7290-15 |
Affected:
3.0.3.266
|
|
| Huawei | WS8000-10 |
Affected:
WS8000-16 3.0.3.236
|
|
| Huawei | WS8001-10 |
Affected:
3.0.3.242
|
|
| Huawei | WS8002-10 |
Affected:
3.0.3.242
|
|
| Huawei | WS8500-10 |
Affected:
WS8500-16 3.0.3.235
|
|
| Huawei | WS8502-10 |
Affected:
3.0.3.242
|
|
| Huawei | WS8700-10 |
Affected:
3.0.3.251
|
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CVE-2023-31241 (GCVE-0-2023-31241)
Vulnerability from cvelistv5 – Published: 2023-05-22 19:26 – Updated: 2025-01-16 21:33
VLAI
EPSS
VEX
Summary
Snap One OvrC cloud servers contain a route an attacker can use to bypass requirements and claim devices outright.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-420 - Unprotected Alternate Channel
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Snap One | OvrC Cloud |
Affected:
0 , < 7.3
(custom)
|
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CVE-2023-30946 (GCVE-0-2023-30946)
Vulnerability from cvelistv5 – Published: 2023-06-29 18:49 – Updated: 2024-10-28 13:03
VLAI
EPSS
VEX
Title
Issues notification metadata lacks authorization
Summary
A security defect was identified in Foundry Issues. If a user was added to an issue on a resource that they did not have access to and consequently could not see, they could query Foundry's Notification API and receive metadata about the issue including the RID of the issue, severity, internal UUID of the author, and the user-defined title of the issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Palantir | com.palantir.issues:issues |
Affected:
* , < 2.497.0
(semver)
|
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CVE-2023-28842 (GCVE-0-2023-28842)
Vulnerability from cvelistv5 – Published: 2023-04-04 21:07 – Updated: 2025-02-13 16:48
VLAI
EPSS
VEX
Title
moby/moby's dockerd daemon encrypted overlay network with a single endpoint is unauthenticated
Summary
Moby) is an open source container framework developed by Docker Inc. that is distributed as Docker, Mirantis Container Runtime, and various other downstream projects/products. The Moby daemon component (`dockerd`), which is developed as moby/moby is commonly referred to as *Docker*.
Swarm Mode, which is compiled in and delivered by default in `dockerd` and is thus present in most major Moby downstreams, is a simple, built-in container orchestrator that is implemented through a combination of SwarmKit and supporting network code.
The `overlay` network driver is a core feature of Swarm Mode, providing isolated virtual LANs that allow communication between containers and services across the cluster. This driver is an implementation/user of VXLAN, which encapsulates link-layer (Ethernet) frames in UDP datagrams that tag the frame with the VXLAN metadata, including a VXLAN Network ID (VNI) that identifies the originating overlay network. In addition, the overlay network driver supports an optional, off-by-default encrypted mode, which is especially useful when VXLAN packets traverses an untrusted network between nodes.
Encrypted overlay networks function by encapsulating the VXLAN datagrams through the use of the IPsec Encapsulating Security Payload protocol in Transport mode. By deploying IPSec encapsulation, encrypted overlay networks gain the additional properties of source authentication through cryptographic proof, data integrity through check-summing, and confidentiality through encryption.
When setting an endpoint up on an encrypted overlay network, Moby installs three iptables (Linux kernel firewall) rules that enforce both incoming and outgoing IPSec. These rules rely on the `u32` iptables extension provided by the `xt_u32` kernel module to directly filter on a VXLAN packet's VNI field, so that IPSec guarantees can be enforced on encrypted overlay networks without interfering with other overlay networks or other users of VXLAN.
The `overlay` driver dynamically and lazily defines the kernel configuration for the VXLAN network on each node as containers are attached and detached. Routes and encryption parameters are only defined for destination nodes that participate in the network. The iptables rules that prevent encrypted overlay networks from accepting unencrypted packets are not created until a peer is available with which to communicate.
Encrypted overlay networks silently accept cleartext VXLAN datagrams that are tagged with the VNI of an encrypted overlay network. As a result, it is possible to inject arbitrary Ethernet frames into the encrypted overlay network by encapsulating them in VXLAN datagrams. The implications of this can be quite dire, and GHSA-vwm3-crmr-xfxw should be referenced for a deeper exploration.
Patches are available in Moby releases 23.0.3, and 20.10.24. As Mirantis Container Runtime's 20.10 releases are numbered differently, users of that platform should update to 20.10.16.
Some workarounds are available. In multi-node clusters, deploy a global ‘pause’ container for each encrypted overlay network, on every node. For a single-node cluster, do not use overlay networks of any sort. Bridge networks provide the same connectivity on a single node and have no multi-node features. The Swarm ingress feature is implemented using an overlay network, but can be disabled by publishing ports in `host` mode instead of `ingress` mode (allowing the use of an external load balancer), and removing the `ingress` network. If encrypted overlay networks are in exclusive use, block UDP port 4789 from traffic that has not been validated by IPSec.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/moby/moby/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/moby/libnetwork/security/advis… | x_refsource_MISC |
| https://github.com/moby/moby/security/advisories/… | x_refsource_MISC |
| https://github.com/moby/moby/security/advisories/… | x_refsource_MISC |
| https://github.com/moby/moby/security/advisories/… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… |
Impacted products
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CVE-2023-28840 (GCVE-0-2023-28840)
Vulnerability from cvelistv5 – Published: 2023-04-04 21:13 – Updated: 2025-02-13 16:48
VLAI
EPSS
VEX
Title
moby/moby's dockerd daemon encrypted overlay network may be unauthenticated
Summary
Moby is an open source container framework developed by Docker Inc. that is distributed as Docker, Mirantis Container Runtime, and various other downstream projects/products. The Moby daemon component (`dockerd`), which is developed as moby/moby, is commonly referred to as *Docker*.
Swarm Mode, which is compiled in and delivered by default in dockerd and is thus present in most major Moby downstreams, is a simple, built-in container orchestrator that is implemented through a combination of SwarmKit and supporting network code.
The overlay network driver is a core feature of Swarm Mode, providing isolated virtual LANs that allow communication between containers and services across the cluster. This driver is an implementation/user of VXLAN, which encapsulates link-layer (Ethernet) frames in UDP datagrams that tag the frame with a VXLAN Network ID (VNI) that identifies the originating overlay network. In addition, the overlay network driver supports an optional, off-by-default encrypted mode, which is especially useful when VXLAN packets traverses an untrusted network between nodes.
Encrypted overlay networks function by encapsulating the VXLAN datagrams through the use of the IPsec Encapsulating Security Payload protocol in Transport mode. By deploying IPSec encapsulation, encrypted overlay networks gain the additional properties of source authentication through cryptographic proof, data integrity through check-summing, and confidentiality through encryption.
When setting an endpoint up on an encrypted overlay network, Moby installs three iptables (Linux kernel firewall) rules that enforce both incoming and outgoing IPSec. These rules rely on the u32 iptables extension provided by the xt_u32 kernel module to directly filter on a VXLAN packet's VNI field, so that IPSec guarantees can be enforced on encrypted overlay networks without interfering with other overlay networks or other users of VXLAN.
Two iptables rules serve to filter incoming VXLAN datagrams with a VNI that corresponds to an encrypted network and discards unencrypted datagrams. The rules are appended to the end of the INPUT filter chain, following any rules that have been previously set by the system administrator. Administrator-set rules take precedence over the rules Moby sets to discard unencrypted VXLAN datagrams, which can potentially admit unencrypted datagrams that should have been discarded.
The injection of arbitrary Ethernet frames can enable a Denial of Service attack. A sophisticated attacker may be able to establish a UDP or TCP connection by way of the container’s outbound gateway that would otherwise be blocked by a stateful firewall, or carry out other escalations beyond simple injection by smuggling packets into the overlay network.
Patches are available in Moby releases 23.0.3 and 20.10.24. As Mirantis Container Runtime's 20.10 releases are numbered differently, users of that platform should update to 20.10.16.
Some workarounds are available. Close the VXLAN port (by default, UDP port 4789) to incoming traffic at the Internet boundary to prevent all VXLAN packet injection, and/or ensure that the `xt_u32` kernel module is available on all nodes of the Swarm cluster.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://github.com/moby/moby/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/moby/libnetwork/security/advis… | x_refsource_MISC |
| https://github.com/moby/moby/security/advisories/… | x_refsource_MISC |
| https://github.com/moby/moby/security/advisories/… | x_refsource_MISC |
| https://github.com/moby/moby/security/advisories/… | x_refsource_MISC |
| https://github.com/moby/moby/issues/43382 | x_refsource_MISC |
| https://github.com/moby/moby/pull/45118 | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… |
Impacted products
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CVE-2023-20198 (GCVE-0-2023-20198)
Vulnerability from cvelistv5 – Published: 2023-10-16 15:12 – Updated: 2025-10-21 23:05
VLAI
EPSS
VEX
Summary
Cisco is providing an update for the ongoing investigation into observed exploitation of the web UI feature in Cisco IOS XE Software. We are updating the list of fixed releases and adding the Software Checker. Our investigation has determined that the actors exploited two previously unknown issues. The attacker first exploited CVE-2023-20198 to gain initial access and issued a privilege 15 command to create a local user and password combination. This allowed the user to log in with normal user access. The attacker then exploited another component of the web UI feature, leveraging the new local user to elevate privilege to root and write the implant to the file system. Cisco has assigned CVE-2023-20273 to this issue. CVE-2023-20198 has been assigned a CVSS Score of 10.0. CVE-2023-20273 has been assigned a CVSS Score of 7.2. Both of these CVEs are being tracked by CSCwh87343.
Severity
10 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-420 - Unprotected Alternate Channel
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/c… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco IOS XE Software |
Affected:
16.1.1
Affected: 16.1.2 Affected: 16.1.3 Affected: 16.2.1 Affected: 16.2.2 Affected: 16.3.1 Affected: 16.3.2 Affected: 16.3.3 Affected: 16.3.1a Affected: 16.3.4 Affected: 16.3.5 Affected: 16.3.5b Affected: 16.3.6 Affected: 16.3.7 Affected: 16.3.8 Affected: 16.3.9 Affected: 16.3.10 Affected: 16.3.11 Affected: 16.4.1 Affected: 16.4.2 Affected: 16.4.3 Affected: 16.5.1 Affected: 16.5.1a Affected: 16.5.1b Affected: 16.5.2 Affected: 16.5.3 Affected: 16.6.1 Affected: 16.6.2 Affected: 16.6.3 Affected: 16.6.4 Affected: 16.6.5 Affected: 16.6.4a Affected: 16.6.5a Affected: 16.6.6 Affected: 16.6.7 Affected: 16.6.8 Affected: 16.6.9 Affected: 16.6.10 Affected: 16.7.1 Affected: 16.7.1a Affected: 16.7.1b Affected: 16.7.2 Affected: 16.7.3 Affected: 16.7.4 Affected: 16.8.1 Affected: 16.8.1a Affected: 16.8.1b Affected: 16.8.1s Affected: 16.8.1c Affected: 16.8.1d Affected: 16.8.2 Affected: 16.8.1e Affected: 16.8.3 Affected: 16.9.1 Affected: 16.9.2 Affected: 16.9.1a Affected: 16.9.1b Affected: 16.9.1s Affected: 16.9.3 Affected: 16.9.4 Affected: 16.9.3a Affected: 16.9.5 Affected: 16.9.5f Affected: 16.9.6 Affected: 16.9.7 Affected: 16.9.8 Affected: 16.10.1 Affected: 16.10.1a Affected: 16.10.1b Affected: 16.10.1s Affected: 16.10.1c Affected: 16.10.1e Affected: 16.10.1d Affected: 16.10.2 Affected: 16.10.1f Affected: 16.10.1g Affected: 16.10.3 Affected: 16.11.1 Affected: 16.11.1a Affected: 16.11.1b Affected: 16.11.2 Affected: 16.11.1s Affected: 16.12.1 Affected: 16.12.1s Affected: 16.12.1a Affected: 16.12.1c Affected: 16.12.1w Affected: 16.12.2 Affected: 16.12.1y Affected: 16.12.2a Affected: 16.12.3 Affected: 16.12.8 Affected: 16.12.2s Affected: 16.12.1x Affected: 16.12.1t Affected: 16.12.4 Affected: 16.12.3s Affected: 16.12.3a Affected: 16.12.4a Affected: 16.12.5 Affected: 16.12.6 Affected: 16.12.1z1 Affected: 16.12.5a Affected: 16.12.5b Affected: 16.12.1z2 Affected: 16.12.6a Affected: 16.12.7 Affected: 16.12.9 Affected: 16.12.10 Affected: 17.1.1 Affected: 17.1.1a Affected: 17.1.1s Affected: 17.1.1t Affected: 17.1.3 Affected: 17.2.1 Affected: 17.2.1r Affected: 17.2.1a Affected: 17.2.1v Affected: 17.2.2 Affected: 17.2.3 Affected: 17.3.1 Affected: 17.3.2 Affected: 17.3.3 Affected: 17.3.1a Affected: 17.3.1w Affected: 17.3.2a Affected: 17.3.1x Affected: 17.3.1z Affected: 17.3.4 Affected: 17.3.5 Affected: 17.3.4a Affected: 17.3.6 Affected: 17.3.4b Affected: 17.3.4c Affected: 17.3.5a Affected: 17.3.5b Affected: 17.3.7 Affected: 17.3.8 Affected: 17.4.1 Affected: 17.4.2 Affected: 17.4.1a Affected: 17.4.1b Affected: 17.4.2a Affected: 17.5.1 Affected: 17.5.1a Affected: 17.5.1b Affected: 17.5.1c Affected: 17.6.1 Affected: 17.6.2 Affected: 17.6.1w Affected: 17.6.1a Affected: 17.6.1x Affected: 17.6.3 Affected: 17.6.1y Affected: 17.6.1z Affected: 17.6.3a Affected: 17.6.4 Affected: 17.6.1z1 Affected: 17.6.5 Affected: 17.6.6 Affected: 17.7.1 Affected: 17.7.1a Affected: 17.7.1b Affected: 17.7.2 Affected: 17.10.1 Affected: 17.10.1a Affected: 17.10.1b Affected: 17.8.1 Affected: 17.8.1a Affected: 17.9.1 Affected: 17.9.1w Affected: 17.9.2 Affected: 17.9.1a Affected: 17.9.1x Affected: 17.9.1y Affected: 17.9.3 Affected: 17.9.2a Affected: 17.9.1x1 Affected: 17.9.3a Affected: 17.9.4 Affected: 17.9.1y1 Affected: 17.11.1 Affected: 17.11.1a Affected: 17.12.1 Affected: 17.12.1a Affected: 17.11.99SW |
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{
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{
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{
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{
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{
"status": "affected",
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},
{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
"status": "affected",
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},
{
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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},
{
"status": "affected",
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{
"status": "affected",
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},
{
"status": "affected",
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{
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{
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{
"status": "affected",
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},
{
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{
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{
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
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},
{
"status": "affected",
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},
{
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},
{
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},
{
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{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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{
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]
}
],
"descriptions": [
{
"lang": "en",
"value": "Cisco is providing an update for the ongoing investigation into observed exploitation of the web UI feature in Cisco IOS XE Software. We are updating the list of fixed releases and adding the Software Checker. Our investigation has determined that the actors exploited two previously unknown issues. The attacker first exploited CVE-2023-20198 to gain initial access and issued a privilege 15 command to create a local user and password combination. This allowed the user to log in with normal user access. The attacker then exploited another component of the web UI feature, leveraging the new local user to elevate privilege to root and write the implant to the file system. Cisco has assigned CVE-2023-20273 to this issue. CVE-2023-20198 has been assigned a CVSS Score of 10.0. CVE-2023-20273 has been assigned a CVSS Score of 7.2. Both of these CVEs are being tracked by CSCwh87343."
}
],
"exploits": [
{
"lang": "en",
"value": "Cisco is aware of active exploitation of these vulnerabilities."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 10,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-420",
"description": "Unprotected Alternate Channel",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-01-25T16:57:55.900Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-iosxe-webui-privesc-j22SaA4z",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z"
}
],
"source": {
"advisory": "cisco-sa-iosxe-webui-privesc-j22SaA4z",
"defects": [
"CSCwh87343"
],
"discovery": "EXTERNAL"
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2023-20198",
"datePublished": "2023-10-16T15:12:58.735Z",
"dateReserved": "2022-10-27T18:47:50.365Z",
"dateUpdated": "2025-10-21T23:05:34.401Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Mitigation
Architecture and Design
Identify all alternate channels and use the same protection mechanisms that are used for the primary channels.
No CAPEC attack patterns related to this CWE.