Reachable Assertion Affecting unbound package, versions <1.6.7-1ubuntu2.4


Severity

Recommended
medium

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    0.5% (77th percentile)

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  • Snyk ID SNYK-UBUNTU1804-UNBOUND-1278982
  • published 7 May 2021
  • disclosed 27 Apr 2021

How to fix?

Upgrade Ubuntu:18.04 unbound to version 1.6.7-1ubuntu2.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream unbound package and not the unbound package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

Unbound before 1.9.5 allows an assertion failure via a compressed name in dname_pkt_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited

CVSS Scores

version 3.1
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NVD

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
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SUSE

5.3 medium
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Red Hat

7.5 high