CVE-2021-29964

high

Description

A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process incorrectly, leading to an out-of-bounds read. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR < 78.11.

References

https://www.mozilla.org/security/advisories/mfsa2021-26/

https://www.mozilla.org/security/advisories/mfsa2021-24/

https://www.mozilla.org/security/advisories/mfsa2021-23/

https://bugzilla.mozilla.org/show_bug.cgi?id=1706501

Details

Source: Mitre, NVD

Published: 2021-06-24

Risk Information

CVSS v2

Base Score: 5.8

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

Severity: Medium

CVSS v3

Base Score: 7.1

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

Severity: High