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f5F5F5:K000138991
HistoryMar 22, 2024 - 12:00 a.m.

K000138991 : BIND vulnerability CVE-2023-6516

2024-03-2200:00:00
my.f5.com
7
cache database efficiency
cleanup events handling
max-cache-size exceeded
bind 9 versions
cve-2023-6516
security advisory

7 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

20.4%

Security Advisory Description

To keep its cache database efficient, named running as a recursive resolver occasionally attempts to clean up the database. It uses several methods, including some that are asynchronous: a small chunk of memory pointing to the cache element that can be cleaned up is first allocated and then queued for later processing. It was discovered that if the resolver is continuously processing query patterns triggering this type of cache-database maintenance, named may not be able to handle the cleanup events in a timely manner. This in turn enables the list of queued cleanup events to grow infinitely large over time, allowing the configured max-cache-size limit to be significantly exceeded. This issue affects BIND 9 versions 9.16.0 through 9.16.45 and 9.16.8-S1 through 9.16.45-S1. (CVE-2023-6516)

Impact

There is no impact; F5 products are not affected by this vulnerability.