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Reachable Assertion Affecting bind9 package, versions <1:9.11.4.P1+dfsg-1

Severity

 Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    95.32% (100th percentile)

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  • Snyk ID SNYK-DEBIAN12-BIND9-1542090
  • published 16 Aug 2018
  • disclosed 16 Jan 2019
Report a new vulnerability Found a mistake?

Introduced: 16 Aug 2018

CVE-2018-5740 Open this link in a new tab
CWE-617 Open this link in a new tab

How to fix?

Upgrade Debian:12 bind9 to version 1:9.11.4.P1+dfsg-1 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:12 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.

References

CVSS Scores

version 3.1
Expand this section

NVD

Recommended
7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High