Use After Free Affecting lrzip package, versions <0.641-1+deb11u1


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.08% (34th percentile)

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  • Snyk ID SNYK-DEBIAN11-LRZIP-2436667
  • published 30 Mar 2022
  • disclosed 28 Mar 2022

How to fix?

Upgrade Debian:11 lrzip to version 0.641-1+deb11u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream lrzip package and not the lrzip package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

lrzip v0.641 was discovered to contain a multiple concurrency use-after-free between the functions zpaq_decompress_buf() and clear_rulist(). This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted Irz file.

CVSS Scores

version 3.1
Expand this section

NVD

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