Reachable Assertion Affecting bind-sdb package, versions <32:9.9.4-61.amzn2.1.1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
81.82% (99th percentile)

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  • Snyk IDSNYK-AMZN2-BINDSDB-1665785
  • published27 Sept 2021
  • disclosed16 Jan 2019

Introduced: 16 Jan 2019

CVE-2018-5740  (opens in a new tab)
CWE-617  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 bind-sdb to version 32:9.9.4-61.amzn2.1.1 or higher.
This issue was patched in ALAS2-2018-1082.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind-sdb package and not the bind-sdb package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

"deny-answer-aliases" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes it easy, when the feature is in use, to experience an assertion failure in name.c. Affects BIND 9.7.0->9.8.8, 9.9.0->9.9.13, 9.10.0->9.10.8, 9.11.0->9.11.4, 9.12.0->9.12.2, 9.13.0->9.13.2.

CVSS Scores

version 3.1