Search criteria
21 vulnerabilities by dena
CVE-2024-45402 (GCVE-0-2024-45402)
Vulnerability from cvelistv5 – Published: 2024-10-11 14:38 – Updated: 2024-10-15 16:11
VLAI?
Title
Picotls double free
Summary
Picotls is a TLS protocol library that allows users select different crypto backends based on their use case. When parsing a spoofed TLS handshake message, picotls (specifically, bindings within picotls that call the crypto libraries) may attempt to free the same memory twice. This double free occurs during the disposal of multiple objects without any intervening calls to malloc Typically, this triggers the malloc implementation to detect the error and abort the process. However, depending on the internals of malloc and the crypto backend being used, the flaw could potentially lead to a use-after-free scenario, which might allow for arbitrary code execution. The vulnerability is addressed with commit 9b88159ce763d680e4a13b6e8f3171ae923a535d.
Severity ?
8.6 (High)
CWE
- CWE-415 - Double Free
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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CVE-2024-45396 (GCVE-0-2024-45396)
Vulnerability from cvelistv5 – Published: 2024-10-11 14:36 – Updated: 2024-10-15 16:11
VLAI?
Title
Quicly assertion failures
Summary
Quicly is an IETF QUIC protocol implementation. Quicly up to commtit d720707 is susceptible to a denial-of-service attack. A remote attacker can exploit these bugs to trigger an assertion failure that crashes process using quicly. The vulnerability is addressed with commit 2a95896104901589c495bc41460262e64ffcad5c.
Severity ?
7.5 (High)
CWE
- CWE-617 - Reachable Assertion
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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CVE-2024-45403 (GCVE-0-2024-45403)
Vulnerability from cvelistv5 – Published: 2024-10-11 14:28 – Updated: 2024-10-11 14:40
VLAI?
Title
H2O assertion failure when HTTP/3 requests are cancelled
Summary
h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. When h2o is configured as a reverse proxy and HTTP/3 requests are cancelled by the client, h2o might crash due to an assertion failure. The crash can be exploited by an attacker to mount a Denial-of-Service attack. By default, the h2o standalone server automatically restarts, minimizing the impact. However, HTTP requests that were served concurrently will still be disrupted. The vulnerability has been addressed in commit 1ed32b2. Users may disable the use of HTTP/3 to mitigate the issue.
Severity ?
CWE
- CWE-617 - Reachable Assertion
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
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CVE-2024-45397 (GCVE-0-2024-45397)
Vulnerability from cvelistv5 – Published: 2024-10-11 14:24 – Updated: 2024-10-11 14:42
VLAI?
Title
H2O alllows bypassing address-based access control with 0-RTT
Summary
h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. When an HTTP request using TLS/1.3 early data on top of TCP Fast Open or QUIC 0-RTT packets is received and the IP-address-based access control is used, the access control does not detect and prohibit HTTP requests conveyed by packets with a spoofed source address. This behavior allows attackers on the network to execute HTTP requests from addresses that are otherwise rejected by the address-based access control. The vulnerability has been addressed in commit 15ed15a. Users may disable the use of TCP FastOpen and QUIC to mitigate the issue.
Severity ?
5.9 (Medium)
CWE
- CWE-284 - Improper Access Control
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
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CVE-2024-25622 (GCVE-0-2024-25622)
Vulnerability from cvelistv5 – Published: 2024-10-11 14:20 – Updated: 2024-10-11 14:46
VLAI?
Title
H2O ignores headers configuration directives
Summary
h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. The configuration directives provided by the headers handler allows users to modify the response headers being sent by h2o. The configuration file of h2o has scopes, and the inner scopes (e.g., path level) are expected to inherit the configuration defined in outer scopes (e.g., global level). However, if a header directive is used in the inner scope, all the definition in outer scopes are ignored. This can lead to headers not being modified as expected. Depending on the headers being added or removed unexpectedly, this behavior could lead to unexpected client behavior. This vulnerability is fixed in commit 123f5e2b65dcdba8f7ef659a00d24bd1249141be.
Severity ?
CWE
- CWE-670 - Always-Incorrect Control Flow Implementation
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
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CVE-2023-50247 (GCVE-0-2023-50247)
Vulnerability from cvelistv5 – Published: 2023-12-12 19:56 – Updated: 2024-08-02 22:09
VLAI?
Title
h2o QUIC state exhaustion DoS
Summary
h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. The QUIC stack (quicly), as used by H2O up to commit 43f86e5 (in version 2.3.0-beta and prior), is susceptible to a state exhaustion attack. When H2O is serving HTTP/3, a remote attacker can exploit this vulnerability to progressively increase the memory retained by the QUIC stack. This can eventually cause H2O to abort due to memory exhaustion. The vulnerability has been resolved in commit d67e81d03be12a9d53dc8271af6530f40164cd35. HTTP/1 and HTTP/2 are not affected by this vulnerability as they do not use QUIC. Administrators looking to mitigate this issue without upgrading can disable HTTP/3 support.
Severity ?
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
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CVE-2023-41337 (GCVE-0-2023-41337)
Vulnerability from cvelistv5 – Published: 2023-12-12 19:42 – Updated: 2024-08-02 19:01
VLAI?
Title
h2o vulnerable to TLS session resumption misdirection
Summary
h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. In version 2.3.0-beta2 and prior, when h2o is configured to listen to multiple addresses or ports with each of them using different backend servers managed by multiple entities, a malicious backend entity that also has the opportunity to observe or inject packets exchanged between the client and h2o may misdirect HTTPS requests going to other backends and observe the contents of that HTTPS request being sent.
The attack involves a victim client trying to resume a TLS connection and an attacker redirecting the packets to a different address or port than that intended by the client. The attacker must already have been configured by the administrator of h2o to act as a backend to one of the addresses or ports that the h2o instance listens to. Session IDs and tickets generated by h2o are not bound to information specific to the server address, port, or the X.509 certificate, and therefore it is possible for an attacker to force the victim connection to wrongfully resume against a different server address or port on which the same h2o instance is listening.
Once a TLS session is misdirected to resume to a server address / port that is configured to use an attacker-controlled server as the backend, depending on the configuration, HTTPS requests from the victim client may be forwarded to the attacker's server.
An H2O instance is vulnerable to this attack only if the instance is configured to listen to different addresses or ports using the listen directive at the host level and the instance is configured to connect to backend servers managed by multiple entities.
A patch is available at commit 35760540337a47e5150da0f4a66a609fad2ef0ab. As a workaround, one may stop using using host-level listen directives in favor of global-level ones.
Severity ?
6.1 (Medium)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
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CVE-2023-44487 (GCVE-0-2023-44487)
Vulnerability from cvelistv5 – Published: 2023-10-10 00:00 – Updated: 2025-11-04 21:08
VLAI?
Summary
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
Severity ?
7.5 (High)
CWE
- n/a
Assigner
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"url": "https://aws.amazon.com/security/security-bulletins/AWS-2023-011/"
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{
"url": "https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack"
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"name": "[oss-security] 20231010 Re: CVE-2023-44487: HTTP/2 Rapid Reset attack against many implementations",
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},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2023-44487",
"datePublished": "2023-10-10T00:00:00.000Z",
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CVE-2023-30847 (GCVE-0-2023-30847)
Vulnerability from cvelistv5 – Published: 2023-04-27 14:08 – Updated: 2025-01-30 19:51
VLAI?
Title
H2O vulnerable to read from uninitialized pointer in the reverse proxy handler
Summary
H2O is an HTTP server. In versions 2.3.0-beta2 and prior, when the reverse proxy handler tries to processes a certain type of invalid HTTP request, it tries to build an upstream URL by reading from uninitialized pointer. This behavior can lead to crashes or leak of information to back end HTTP servers. Pull request number 3229 fixes the issue. The pull request has been merged to the `master` branch in commit f010336. Users should upgrade to commit f010336 or later.
Severity ?
8.2 (High)
CWE
- CWE-824 - Access of Uninitialized Pointer
Assigner
References
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|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2022-29482 (GCVE-0-2022-29482)
Vulnerability from cvelistv5 – Published: 2022-06-14 07:05 – Updated: 2024-08-03 06:26
VLAI?
Summary
'Mobaoku-Auction&Flea Market' App for iOS versions prior to 5.5.16 improperly verifies server certificates, which may allow an attacker to eavesdrop on an encrypted communication via a man-in-the-middle attack.
Severity ?
No CVSS data available.
CWE
- Improper Certificate Validation
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| DeNA Co., Ltd. | Mobaoku-Auction & Flea Market App for iOS |
Affected:
versions prior to 5.5.16
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CVE-2021-43848 (GCVE-0-2021-43848)
Vulnerability from cvelistv5 – Published: 2022-02-01 12:13 – Updated: 2025-04-23 19:08
VLAI?
Title
Unititialized memory access in h2o
Summary
h2o is an open source http server. In code prior to the `8c0eca3` commit h2o may attempt to access uninitialized memory. When receiving QUIC frames in certain order, HTTP/3 server-side implementation of h2o can be misguided to treat uninitialized memory as HTTP/3 frames that have been received. When h2o is used as a reverse proxy, an attacker can abuse this vulnerability to send internal state of h2o to backend servers controlled by the attacker or third party. Also, if there is an HTTP endpoint that reflects the traffic sent from the client, an attacker can use that reflector to obtain internal state of h2o. This internal state includes traffic of other connections in unencrypted form and TLS session tickets. This vulnerability exists in h2o server with HTTP/3 support, between commit 93af138 and d1f0f65. None of the released versions of h2o are affected by this vulnerability. There are no known workarounds. Users of unreleased versions of h2o using HTTP/3 are advised to upgrade immediately.
Severity ?
7.4 (High)
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
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|---|---|---|---|---|---|---|---|---|
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CVE-2018-0608 (GCVE-0-2018-0608)
Vulnerability from cvelistv5 – Published: 2018-06-26 14:00 – Updated: 2024-08-05 03:28
VLAI?
Summary
Buffer overflow in H2O version 2.2.4 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via unspecified vectors.
Severity ?
No CVSS data available.
CWE
- Buffer Overflow
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Kazuho Oku | H2O |
Affected:
version 2.2.4 and earlier
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CVE-2017-10868 (GCVE-0-2017-10868)
Vulnerability from cvelistv5 – Published: 2017-12-22 14:00 – Updated: 2024-08-05 17:50
VLAI?
Summary
H2O version 2.2.2 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/1 header.
Severity ?
No CVSS data available.
CWE
- Denial-of-service (DoS)
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Kazuho Oku | H2O |
Affected:
version 2.2.2 and earlier
|
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CVE-2017-10872 (GCVE-0-2017-10872)
Vulnerability from cvelistv5 – Published: 2017-12-22 14:00 – Updated: 2024-08-05 17:50
VLAI?
Summary
H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via unspecified vectors.
Severity ?
No CVSS data available.
CWE
- Denial-of-service (DoS)
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Kazuho Oku | H2O |
Affected:
version 2.2.3 and earlier
|
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CVE-2017-10908 (GCVE-0-2017-10908)
Vulnerability from cvelistv5 – Published: 2017-12-22 14:00 – Updated: 2024-08-05 17:50
VLAI?
Summary
H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/2 header.
Severity ?
No CVSS data available.
CWE
- Denial-of-service (DoS)
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Kazuho Oku | H2O |
Affected:
version 2.2.3 and earlier
|
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CVE-2017-10869 (GCVE-0-2017-10869)
Vulnerability from cvelistv5 – Published: 2017-12-22 14:00 – Updated: 2024-08-05 17:50
VLAI?
Summary
Buffer overflow in H2O version 2.2.2 and earlier allows remote attackers to cause a denial-of-service in the server via unspecified vectors.
Severity ?
No CVSS data available.
CWE
- Buffer Overflow
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Kazuho Oku | H2O |
Affected:
version 2.2.2 and earlier
|
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CVE-2016-7835 (GCVE-0-2016-7835)
Vulnerability from cvelistv5 – Published: 2017-06-09 16:00 – Updated: 2024-08-06 02:04
VLAI?
Summary
Use-after-free vulnerability in H2O allows remote attackers to cause a denial-of-service (DoS) or obtain server certificate private keys and possibly other information.
Severity ?
No CVSS data available.
CWE
- Use-after-free
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Kazuho Oku | H2O |
Affected:
version 2.0.4 and earlier
|
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CVE-2016-4864 (GCVE-0-2016-4864)
Vulnerability from cvelistv5 – Published: 2017-05-12 18:00 – Updated: 2024-08-06 00:46
VLAI?
Summary
H2O versions 2.0.3 and earlier and 2.1.0-beta2 and earlier allows remote attackers to cause a denial-of-service (DoS) via format string specifiers in a template file via fastcgi, mruby, proxy, redirect or reproxy.
Severity ?
No CVSS data available.
CWE
- Format String Vulnerability
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Kazuho Oku | H2O |
Affected:
versions 2.0.3 and earlier
Affected: versions 2.1.0-beta2 and earlier |
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CVE-2016-4817 (GCVE-0-2016-4817)
Vulnerability from cvelistv5 – Published: 2016-06-19 01:00 – Updated: 2024-08-06 00:39
VLAI?
Summary
lib/http2/connection.c in H2O before 1.7.3 and 2.x before 2.0.0-beta5 mishandles HTTP/2 disconnection, which allows remote attackers to cause a denial of service (use-after-free and application crash) or possibly execute arbitrary code via a crafted packet.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
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CVE-2016-1133 (GCVE-0-2016-1133)
Vulnerability from cvelistv5 – Published: 2016-01-16 02:00 – Updated: 2024-08-05 22:48
VLAI?
Summary
CRLF injection vulnerability in the on_req function in lib/handler/redirect.c in H2O before 1.6.2 and 1.7.x before 1.7.0-beta3 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a crafted URI.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
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CVE-2015-5638 (GCVE-0-2015-5638)
Vulnerability from cvelistv5 – Published: 2015-09-20 14:00 – Updated: 2024-08-06 06:59
VLAI?
Summary
Directory traversal vulnerability in H2O before 1.4.5 and 1.5.x before 1.5.0-beta2, when the file.dir directive is enabled, allows remote attackers to read arbitrary files via a crafted URL.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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"name": "https://h2o.examp1e.net/vulnerabilities.html#CVE-2015-5638",
"refsource": "CONFIRM",
"url": "https://h2o.examp1e.net/vulnerabilities.html#CVE-2015-5638"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
"assignerShortName": "jpcert",
"cveId": "CVE-2015-5638",
"datePublished": "2015-09-20T14:00:00",
"dateReserved": "2015-07-24T00:00:00",
"dateUpdated": "2024-08-06T06:59:04.176Z",
"state": "PUBLISHED"
},
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}