Integer Overflow or Wraparound Affecting klibc package, versions <2.0.7-1ubuntu5.1


Severity

Recommended
low

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    0.65% (80th percentile)

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  • Snyk ID SNYK-UBUNTU2004-KLIBC-1278706
  • published 29 Jan 2022
  • disclosed 30 Apr 2021

How to fix?

Upgrade Ubuntu:20.04 klibc to version 2.0.7-1ubuntu5.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream klibc package and not the klibc package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

An issue was discovered in klibc before 2.0.9. Additions in the malloc() function may result in an integer overflow and a subsequent heap buffer overflow.

CVSS Scores

version 3.1
Expand this section

NVD

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