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CVE-2021-38496

nvd nist
Published: Nov 3, 2021Modified: Nov 21, 2024

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8.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 5.9
Source: NVD

Description

During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93.

Affected (8)

Mozilla
3 products
Firefox
Firefox Esr
Thunderbird
Debian
1 product
Debian Linux
Configuration A
5 vulnerable
Vulnerable SoftwareAffected Versions
Mozilla
Firefox
Before 93.0
Firefox
From 91.0 to 91.2
Firefox Esr
Before 78.15
Mozilla
Thunderbird
Before 78.15
Thunderbird
From 91.0 to 91.2
Configuration B
3 vulnerable
Vulnerable SoftwareAffected Versions
Debian
Debian Linux
Version 10.0
Debian Linux
Version 11.0
Debian Linux
Version 9.0

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (16)

Source: security@mozilla.org
Issue TrackingPermissions RequiredVendor Advisory
Source: security@mozilla.org
Mailing ListThird Party Advisory
Source: security@mozilla.org
Issue TrackingThird Party Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Broken Link
Source: security@mozilla.org
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingPermissions RequiredVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

Timeline

No history available yet.