Vulnerability · Published Feb 23, 2023 · Assigned by GitHub_M
CVE-2023-25824mod_gnutls contains Infinite Loop on request read timeout
High 7.5
In plain English
A high-severity infinite loop in mod_gnutls from airtower-luna. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities).
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | mod-gnutls | no fix listed | UBUNTU-CVE-2023-25824 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| airtower-luna | mod_gnutls | >= 0.9.0, < 0.12.1 |
Weakness: CWE-835 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H