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Fencer Vulns
high 7.4

CVE-2023-5170 json

In canvas rendering, a compromised content process could have caused a surface to change unexpectedly, leading to a memory leak of a privil…

published 2023-09-27 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57507

cvss
7.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

In canvas rendering, a compromised content process could have caused a surface to change unexpectedly, leading to a memory leak of a privileged process. This memory leak could be used to effect a sandbox escape if the correct data was leaked. This vulnerability affects Firefox < 118.

Patch / fix

  • Mozilla Firefox 118
  • firefox Ubuntu 20.04 LTS 118.0.1+build1-0ubuntu0.20.04.1

ubuntu advisories UBUNTU-CVE-2023-5170

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 118.0.1-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:13272-1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Affected products

  • Mozilla Firefox

Classification

Weakness
  • CWE-401 Missing Release of Memory after Effective Lifetime

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.