Double Free Affecting firefox package, versions <112.0-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.14% (51st percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOX-5489164
  • published29 Apr 2023
  • disclosed20 Jun 2023

Introduced: 29 Apr 2023

CVE-2023-1999  (opens in a new tab)
CWE-415  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox to version 112.0-1 or higher.

NVD Description

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

There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free.

CVSS Scores

version 3.1