NULL Pointer Dereference Affecting wireshark package, versions <3.2.7-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.27% (68th percentile)

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  • Snyk IDSNYK-ALPINE312-WIRESHARK-1012703
  • published25 Sept 2020
  • disclosed6 Oct 2020

Introduced: 25 Sep 2020

CVE-2020-25866  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Alpine:3.12 wireshark to version 3.2.7-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wireshark package and not the wireshark package as distributed by Alpine. See How to fix? for Alpine:3.12 relevant fixed versions and status.

In Wireshark 3.2.0 to 3.2.6 and 3.0.0 to 3.0.13, the BLIP protocol dissector has a NULL pointer dereference because a buffer was sized for compressed (not uncompressed) messages. This was addressed in epan/dissectors/packet-blip.c by allowing reasonable compression ratios and rejecting ZIP bombs.

CVSS Scores

version 3.1