Vulnerability Monitor

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CVE-2021-29964

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.

Published

2021-06-24T14:15:10.333

Last Modified

2024-11-21T06:02:04.413

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.1 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

4.9

Weaknesses

Type: Primary
CWE-125

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 89.0	Yes
Application	mozilla	firefox_esr	< 78.11	Yes
Application	mozilla	thunderbird	< 78.11	Yes
Operating System	microsoft	windows	-	No

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1706501 Permissions Required, Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2021-23/ Release Notes, Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2021-24/ Release Notes, Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2021-26/ Release Notes, Vendor Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1706501 Permissions Required, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2021-23/ Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2021-24/ Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2021-26/ Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)