Common Weakness Enumeration
CWE-636
Allowed-with-ReviewNot Failing Securely ('Failing Open')
Abstraction: Class · Status: Draft
When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions.
99 vulnerabilities reference this CWE, most recent first.
CVE-2025-41759 (GCVE-0-2025-41759)
Vulnerability from cvelistv5 – Published: 2026-03-09 08:16 – Updated: 2026-03-09 20:14
VLAI
EPSS
VEX
Title
Use of wildcard (“*” or “all”) in Block list
Summary
An administrator may attempt to block all networks by specifying "\*" or "all" as the network identifier. However, these values are not supported and do not trigger any validation error. Instead, they are silently interpreted as network 0 which results in no networks being blocked at all.
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-09 20:02 UTC
CWE
- CWE-636 - Not Failing Securely ('Failing Open')
Assigner
References
1 reference
Impacted products
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CVE-2025-21210 (GCVE-0-2025-21210)
Vulnerability from cvelistv5 – Published: 2025-01-14 18:03 – Updated: 2026-06-09 18:28
VLAI
EPSS
VEX
Title
Windows BitLocker Information Disclosure Vulnerability
Summary
Windows BitLocker Information Disclosure Vulnerability
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-15 21:21 UTC
CWE
- CWE-636 - Not Failing Securely ('Failing Open')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
25 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1507 |
Affected:
10.0.10240.0 , < 10.0.10240.20890
(custom)
|
|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.7699
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.6775
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.5371
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.5371
(custom)
|
|
| Microsoft | Windows 11 version 22H2 |
Affected:
10.0.22621.0 , < 10.0.22621.4751
(custom)
|
|
| Microsoft | Windows 11 version 22H3 |
Affected:
10.0.22631.0 , < 10.0.22631.4751
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.4751
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.2894
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 |
Affected:
6.1.7601.0 , < 6.1.7601.27520
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) |
Affected:
6.1.7601.0 , < 6.1.7601.27520
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.6003.0 , < 6.0.6003.23070
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) |
Affected:
6.0.6003.0 , < 6.0.6003.23070
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.25273
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.25273
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.22371
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.22371
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.7699
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.7699
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.6775
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.6775
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.3091
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.1369
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.2894
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.2894
(custom)
|
Date Public
2025-01-14 08:00
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"product": "Windows 11 Version 24H2",
"vendor": "Microsoft",
"versions": [
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"lessThan": "10.0.26100.2894",
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"platforms": [
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],
"product": "Windows Server 2008 R2 Service Pack 1",
"vendor": "Microsoft",
"versions": [
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"status": "affected",
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},
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"platforms": [
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],
"product": "Windows Server 2008 R2 Service Pack 1 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
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"version": "6.1.7601.0",
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},
{
"platforms": [
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],
"product": "Windows Server 2008 Service Pack 2",
"vendor": "Microsoft",
"versions": [
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"lessThan": "6.0.6003.23070",
"status": "affected",
"version": "6.0.6003.0",
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CVE-2024-43532 (GCVE-0-2024-43532)
Vulnerability from cvelistv5 – Published: 2024-10-08 17:35 – Updated: 2026-08-19 16:26
VLAI
EPSS
VEX
Title
Remote Registry Service Elevation of Privilege Vulnerability
Summary
Remote Registry Service Elevation of Privilege Vulnerability
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-08 19:07 UTC
CWE
- CWE-636 - Not Failing Securely ('Failing Open')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
25 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1507 |
Affected:
10.0.10240.0 , < 10.0.10240.20796
(custom)
|
|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.7428
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.6414
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19043.0 , < 10.0.19044.5011
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.5011
(custom)
|
|
| Microsoft | Windows 11 version 21H2 |
Affected:
10.0.22000.0 , < 10.0.22000.3260
(custom)
|
|
| Microsoft | Windows 11 version 22H2 |
Affected:
10.0.22621.0 , < 10.0.22621.4317
(custom)
|
|
| Microsoft | Windows 11 version 22H3 |
Affected:
10.0.22631.0 , < 10.0.22631.4317
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.4317
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.2033
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.6003.0 , < 6.0.6003.22918
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 |
Affected:
6.1.7601.0 , < 6.1.7601.27366
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) |
Affected:
6.1.7601.0 , < 6.1.7601.27366
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.6003.0 , < 6.0.6003.22918
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) |
Affected:
6.0.6003.0 , < 6.0.6003.22918
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.25118
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.25118
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.22221
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.22221
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.7428
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.7428
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.6414
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.6414
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.2762
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.1189
(custom)
|
Date Public
2024-10-08 07:00
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"product": "Windows Server 2008 R2 Service Pack 1",
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CVE-2024-8185 (GCVE-0-2024-8185)
Vulnerability from cvelistv5 – Published: 2024-10-31 15:14 – Updated: 2024-10-31 17:11
VLAI
EPSS
VEX
Title
Vault Vulnerable to Denial of Service When Processing Raft Join Requests
Summary
Vault Community and Vault Enterprise (“Vault”) clusters using Vault’s Integrated Storage backend are vulnerable to a denial-of-service (DoS) attack through memory exhaustion through a Raft cluster join API endpoint . An attacker may send a large volume of requests to the endpoint which may cause Vault to consume excessive system memory resources, potentially leading to a crash of the underlying system and the Vault process itself.
This vulnerability, CVE-2024-8185, is fixed in Vault Community 1.18.1 and Vault Enterprise 1.18.1, 1.17.8, and 1.16.12.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-31 16:54 UTC
CWE
- CWE-636 - Not Failing Securely (Failing Open)
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| HashiCorp | Vault |
Affected:
1.2.0 , < 1.18.1
(semver)
|
|
| HashiCorp | Vault Enterprise |
Affected:
1.2.0 , < 1.18.1
(semver)
|
|
| hashicorp | vault |
Affected:
1.2.0 , < 1.18.1
(custom)
Unaffected: 1.17.8 Unaffected: 1.16.12 cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:* |
|
| hashicorp | vault |
Affected:
1.2.0 , < 1.18.1
(custom)
cpe:2.3:a:hashicorp:vault:*:*:*:*:community:*:*:* |
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CVE-2024-3729 (GCVE-0-2024-3729)
Vulnerability from cvelistv5 – Published: 2024-05-02 16:52 – Updated: 2026-04-08 17:12
VLAI
EPSS
VEX
Title
Frontend Admin by DynamiApps <= 3.19.4 - Improper Missing Encryption Exception Handling to Form Manipulation
Summary
The Frontend Admin by DynamiApps plugin for WordPress is vulnerable to improper missing encryption exception handling on the 'fea_encrypt' function in all versions up to, and including, 3.19.4. This makes it possible for unauthenticated attackers to manipulate the user processing forms, which can be used to add and edit administrator user for privilege escalation, or to automatically log in users for authentication bypass, or manipulate the post processing form that can be used to inject arbitrary web scripts. This can only be exploited if the 'openssl' php extension is not loaded on the server.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-02 18:06 UTC
CWE
- CWE-636 - Not Failing Securely ('Failing Open')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| shabti | Frontend Admin by DynamiApps |
Affected:
0 , ≤ 3.19.4
(semver)
|
|
| wordpress | frontend_admin_by_dynamiapps |
Affected:
- , ≤ 3.19.4
(custom)
cpe:2.3:a:wordpress:frontend_admin_by_dynamiapps:-:*:*:*:*:*:*:* |
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CVE-2024-2660 (GCVE-0-2024-2660)
Vulnerability from cvelistv5 – Published: 2024-04-04 17:55 – Updated: 2024-09-26 00:13
VLAI
EPSS
VEX
Title
Vault TLS Cert Auth Method Did Not Correctly Validate OCSP Responses
Summary
Vault and Vault Enterprise TLS certificates auth method did not correctly validate OCSP responses when one or more OCSP sources were configured. This vulnerability, CVE-2024-2660, affects Vault and Vault Enterprise 1.14.0 and above, and is fixed in Vault 1.16.0 and Vault Enterprise 1.16.1, 1.15.7, and 1.14.11.
Severity
6.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-09 16:05 UTC
CWE
- CWE-636 - Not Failing Securely (Failing Open)
Assigner
References
2 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| HashiCorp | Vault |
Affected:
1.14.0 , < 1.16.0
(semver)
|
|
| HashiCorp | Vault Enterprise |
Affected:
1.14.0 , < 1.16.0
(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 · CISA-ADP (v2.0.3)
Decision recorded 2025-02-10 21:32 UTC
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-2023-28841 (GCVE-0-2023-28841)
Vulnerability from cvelistv5 – Published: 2023-04-04 21:12 – Updated: 2025-02-13 16:48
VLAI
EPSS
VEX
Title
moby/moby's dockerd daemon encrypted overlay network traffic may be unencrypted
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.
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An iptables rule designates outgoing VXLAN datagrams with a VNI that corresponds to an encrypted overlay network for IPsec encapsulation.
Encrypted overlay networks on affected platforms silently transmit unencrypted data. As a result, `overlay` networks may appear to be functional, passing traffic as expected, but without any of the expected confidentiality or data integrity guarantees.
It is possible for an attacker sitting in a trusted position on the network to read all of the application traffic that is moving across the overlay network, resulting in unexpected secrets or user data disclosure. Thus, because many database protocols, internal APIs, etc. are not protected by a second layer of encryption, a user may use Swarm encrypted overlay networks to provide confidentiality, which due to this vulnerability this is no longer guaranteed.
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 outgoing traffic at the Internet boundary in order to prevent unintentionally leaking unencrypted traffic over the Internet, and/or ensure that the `xt_u32` kernel module is available on all nodes of the Swarm cluster.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-10 21:32 UTC
Assigner
References
11 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://github.com/moby/libnetwork/blob/d9fae4c73… | 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 · CISA-ADP (v2.0.3)
Decision recorded 2025-02-10 21:31 UTC
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-2023-22943 (GCVE-0-2023-22943)
Vulnerability from cvelistv5 – Published: 2023-02-14 17:22 – Updated: 2025-02-28 11:03
VLAI
EPSS
VEX
Title
Modular Input REST API Requests Connect via HTTP after Certificate Validation Failure in Splunk Add-on Builder and Splunk CloudConnect SDK
Summary
In Splunk Add-on Builder (AoB) versions below 4.1.2 and the Splunk CloudConnect SDK versions below 3.1.3, requests to third-party APIs through the REST API Modular Input incorrectly revert to using HTTP to connect after a failure to connect over HTTPS occurs.
Severity
4.8 (Medium)
CWE
- CWE-636 - When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions.
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Splunk | Splunk Add-on Builder |
Affected:
4.1 , < 4.1.2
(custom)
|
|
| Splunk | Splunk CloudConnect SDK |
Affected:
3.1 , < 3.1.3
(custom)
|
Date Public
2023-02-14 00:00
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}
],
"datePublic": "2023-02-14T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "In Splunk Add-on Builder (AoB) versions below 4.1.2 and the Splunk CloudConnect SDK versions below 3.1.3, requests to third-party APIs through the REST API Modular Input incorrectly revert to using HTTP to connect after a failure to connect over HTTPS occurs."
}
],
"value": "In Splunk Add-on Builder (AoB) versions below 4.1.2 and the Splunk CloudConnect SDK versions below 3.1.3, requests to third-party APIs through the REST API Modular Input incorrectly revert to using HTTP to connect after a failure to connect over HTTPS occurs."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-636",
"description": "When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions.",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-02-28T11:03:49.432Z",
"orgId": "42b59230-ec95-491e-8425-5a5befa1a469",
"shortName": "Splunk"
},
"references": [
{
"url": "https://advisory.splunk.com/advisories/SVD-2023-0213"
}
],
"source": {
"advisory": "SVD-2023-0213"
},
"title": "Modular Input REST API Requests Connect via HTTP after Certificate Validation Failure in Splunk Add-on Builder and Splunk CloudConnect SDK"
}
},
"cveMetadata": {
"assignerOrgId": "42b59230-ec95-491e-8425-5a5befa1a469",
"assignerShortName": "Splunk",
"cveId": "CVE-2023-22943",
"datePublished": "2023-02-14T17:22:40.690Z",
"dateReserved": "2023-01-10T21:39:55.584Z",
"dateUpdated": "2025-02-28T11:03:49.432Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Mitigation
Architecture and Design
Subdivide and allocate resources and components so that a failure in one part does not affect the entire product.
No CAPEC attack patterns related to this CWE.