CVE-2023-25824
This could be exploited for denial of service attacks.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.09%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Mod_gnutls is a TLS module for Apache HTTPD based on GnuTLS. Versions from 0.9.0 to 0.12.0 (including) did not properly fail blocking read operations on TLS connections when the transport hit timeouts. Instead it entered an endless loop retrying the read operation, consuming CPU resources. This could be exploited for denial of service attacks. If trace level logging was enabled, it would also produce an excessive amount of log output during the loop, consuming disk space. The problem has been fixed in commit d7eec4e598158ab6a98bf505354e84352f9715ec, please update to version 0.12.1. There are no workarounds, users who cannot update should apply the errno fix detailed in the security advisory.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.09% probability · 64th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-835
- Affected
- mod gnutls project/mod gnutls
- Source
- security-advisories@github.com
References
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942737#25Exploit, Issue Tracking, Mailing List, Mitigation, Patch, Third Party Advisory
- https://github.com/airtower-luna/mod_gnutls/commit/d7eec4e598158ab6a98bf505354e84352f9715ecPatch
- https://github.com/airtower-luna/mod_gnutls/security/advisories/GHSA-6cfv-fvgm-7pc8Patch, Vendor Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942737#25Exploit, Issue Tracking, Mailing List, Mitigation, Patch, Third Party Advisory
- https://github.com/airtower-luna/mod_gnutls/commit/d7eec4e598158ab6a98bf505354e84352f9715ecPatch
- https://github.com/airtower-luna/mod_gnutls/security/advisories/GHSA-6cfv-fvgm-7pc8Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.