CVE-2021-23979 - Mozilla developers reported memory safety bugs present in Firefox 85

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HIGH

Mozilla developers reported memory safety bugs present in Firefox 85

Published Feb 26, 2021

8.8

HIGH

CVSS 3.1

EPSS 0.92%

Description

Mozilla developers reported memory safety bugs present in Firefox 85. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 86.

Affected products

Vendor Mozilla Product Firefox Default
n/a
- Version
  < 86
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Mozilla

Firefox

n/a

Version	Status	Constraints
< 86	affected	-

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-787

Out-of-bounds Write

References (3)

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1663222%2C1666607%2C1672120%2C1678463%2C1678927%2C1679560%2C1681297%2C1681684%2C1683490%2C1684377%2C1684902
x_refsource_MISCExploitIssue TrackingVendor Advisory
https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-10900
Advisory
https://www.mozilla.org/security/advisories/mfsa2021-07/
x_refsource_MISCRelease NotesVendor Advisory

Link	Providers	Tags
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1663222%2C1666607%2C1672120%2C1678463%2C1678927%2C1679560%2C1681297%2C1681684%2C1683490%2C1684377%2C1684902		x_refsource_MISCExploitIssue TrackingVendor Advisory
https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-10900		Advisory
https://www.mozilla.org/security/advisories/mfsa2021-07/		x_refsource_MISCRelease NotesVendor Advisory