CVE-2023-4577

medium

Description

When `UpdateRegExpStatics` attempted to access `initialStringHeap` it could already have been garbage collected prior to entering the function, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

References

https://www.mozilla.org/security/advisories/mfsa2023-38/

https://www.mozilla.org/security/advisories/mfsa2023-36/

https://www.mozilla.org/security/advisories/mfsa2023-34/

https://bugzilla.mozilla.org/show_bug.cgi?id=1847397

Details

Source: Mitre, NVD

Published: 2023-09-11

Updated: 2023-09-13

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00458

	
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