Out-of-bounds Write Affecting bind9 package, versions <1:9.16.44-1~deb11u1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.25% (66th percentile)

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  • Snyk IDSNYK-DEBIAN11-BIND9-5912040
  • published20 Sept 2023
  • disclosed20 Sept 2023

Introduced: 20 Sep 2023

CVE-2023-3341  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Debian:11 bind9 to version 1:9.16.44-1~deb11u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind9 package and not the bind9 package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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.

CVSS Scores

version 3.1