PT-2025-39988 · Openssl+6 · Openssl+6
Stanislav Fort
·
Published
2025-09-30
·
Updated
2026-04-27
·
CVE-2025-9232
CVSS v3.1
5.9
Medium
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
OpenSSL versions 3.0.16 through 3.5.0
EDK II (affected versions not specified)
Description
An issue has been identified in OpenSSL where an application using the 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 HTTP URL is an IPv6 address. This can lead to a denial of service for the application. The vulnerable code was introduced in releases 3.0.16, 3.1.8, 3.2.4, 3.3.3, 3.4.0, and 3.5.0. The FIPS modules are not affected, as the HTTP client implementation is outside the FIPS module boundary. The vulnerability requires an attacker-controlled URL to be passed to the OpenSSL function and the user must have the no proxy environment variable set. The issue was assessed as having low severity. The HTTP client API functions are used directly by applications and also by the OCSP and CMP client implementations within OpenSSL, though URLs used by these implementations are unlikely to be controlled by an attacker.Recommendations
OpenSSL versions 3.0.16 through 3.0.17-1~deb12u3
OpenSSL versions 3.1.8 through 3.5.1-1+deb13u1
OpenSSL versions 3.2.4 through 3.5.1-1+deb13u1
OpenSSL versions 3.3.3 through 3.5.1-1+deb13u1
OpenSSL versions 3.4.0 through 3.5.1-1+deb13u1
OpenSSL version 3.5.0 through 3.5.1-1+deb13u1
As a temporary workaround, consider disabling the use of the HTTP client API functions if possible.
Restrict access to the vulnerable functions
HTTP client API functions to minimize the risk of exploitation.
Avoid setting the no proxy environment variable if not required.Fix
DoS
Out of bounds Read
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Debian
Freebsd
Ibm Aix
Linuxmint
Openssl
Red Os
Ubuntu