Divide By Zero Affecting libpng1.6 package, versions <1.6.34-2


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.84% (83rd percentile)

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  • Snyk ID SNYK-DEBIAN11-LIBPNG16-525244
  • published 11 Jul 2018
  • disclosed 9 Jul 2018

How to fix?

Upgrade Debian:11 libpng1.6 to version 1.6.34-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpng1.6 package and not the libpng1.6 package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

In libpng 1.6.34, a wrong calculation of row_factor in the png_check_chunk_length function (pngrutil.c) may trigger an integer overflow and resultant divide-by-zero while processing a crafted PNG file, leading to a denial of service.

CVSS Scores

version 3.1
Expand this section

NVD

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