CVE-2023-4577

CVE Database · CVE-2023-4577

CVE-2023-4577

· MEDIUMModified

CVSS v3.1

6.5

EPSS

0.55%

Published

Sep 11, 2023

Modified

Nov 21, 2024

Public PoC / Exploit (1)

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Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected Products (3)

mozilla · firefox (up to 117.0)vulnerable

mozilla · firefox_esr (up to 115.2)vulnerable

mozilla · thunderbird (up to 115.2)vulnerable

References (8)

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

Issue TrackingPermissions Required

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

Vendor Advisory

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