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CVE-2025-9232 Detail

Description

Issue summary: An application using the OpenSSL HTTP client API functions may trigger an out-of-bounds read if the 'no_proxy' environment variable is set and the host portion of the authority component of the HTTP URL is an IPv6 address. Impact summary: An out-of-bounds read can trigger a crash which leads to Denial of Service for an application. The OpenSSL HTTP client API functions can be used directly by applications but they are also used by the OCSP client functions and CMP (Certificate Management Protocol) client implementation in OpenSSL. However the URLs used by these implementations are unlikely to be controlled by an attacker. In this vulnerable code the out of bounds read can only trigger a crash. Furthermore the vulnerability requires an attacker-controlled URL to be passed from an application to the OpenSSL function and the user has to have a 'no_proxy' environment variable set. For the aforementioned reasons the issue was assessed as Low severity. The vulnerable code was introduced in the following patch releases: 3.0.16, 3.1.8, 3.2.4, 3.3.3, 3.4.0 and 3.5.0. The FIPS modules in 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue, as the HTTP client implementation is outside the OpenSSL FIPS module boundary.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/openssl/openssl/commit/2b4ec20e47959170422922eaff25346d362dcb35 OpenSSL Software Foundation
https://github.com/openssl/openssl/commit/654dc11d23468a74fc8ea4672b702dd3feb7be4b OpenSSL Software Foundation
https://github.com/openssl/openssl/commit/7cf21a30513c9e43c4bc3836c237cf086e194af3 OpenSSL Software Foundation
https://github.com/openssl/openssl/commit/89e790ac431125a4849992858490bed6b225eadf OpenSSL Software Foundation
https://github.com/openssl/openssl/commit/bbf38c034cdabd0a13330abcc4855c866f53d2e0 OpenSSL Software Foundation
https://openssl-library.org/news/secadv/20250930.txt OpenSSL Software Foundation

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read OpenSSL Software Foundation  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-9232
NVD Published Date:
09/30/2025
NVD Last Modified:
09/30/2025
Source:
OpenSSL Software Foundation