CVE-2023-3341: debian debian_linux Out-of-bounds Write

Vulnerability summary

CVE-2023-3341 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 2.85% chance of exploitation in the next 30 days, higher than 86.5% of scored vulnerabilities.

Timeline

1. 20-09-2023
   PublishedVulnerability first disclosed.
2. 02-12-2025
   Last modifiedVulnerability information updated.

Description

The code that processes control channel messages sent to `named` calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing code to run out of available stack memory, causing `named` to terminate unexpectedly. Since each incoming control channel message is fully parsed before its contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key; only network access to the control channel's configured TCP port is necessary. This issue affects BIND 9 versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16, 9.9.3-S1 through 9.16.43-S1, and 9.18.0-S1 through 9.18.18-S1.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
• CWE-1325Improperly Controlled Sequential Memory AllocationThe product manages a group of objects or resources and performs a separate memory allocation for each object, but it does not properly limit the total amount of memory that is consumed by all of the combined objects.