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7.5 High

CVE-2023-3341 The code that processes control channel messages sent to `named` calls certain functions recursively during packet…

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.

Affected products and versions

Product Affected versions Fixed in
BIND 9 9.19 9.19.0 → 9.19.16 No fix stated
BIND 9 9.18 9.18.0-S1 → 9.18.18 No fix stated
BIND 9 9.9 9.9.3-S1 → 9.16.43-S1 No fix stated
BIND 9 9.2 9.2.0 → 9.16.43 No fix stated

References

Timeline

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