CVE-2021-38496

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.

CVSS v3.0 8.8 HIGH
CVSS v2.0 6.8 MEDIUM

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.mozilla.org/security/advisories/mfsa2021-43/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-45/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-44/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-47/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-46/	Broken Link
https://bugzilla.mozilla.org/show_bug.cgi?id=1725335	Permissions Required Vendor Advisory
https://www.debian.org/security/2022/dsa-5034
https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox::::::::
	cpe:2.3:a:mozilla:firefox_esr::::::::
	cpe:2.3:a:mozilla:firefox_esr::::::::
	cpe:2.3:a:mozilla:thunderbird::::::::
	cpe:2.3:a:mozilla:thunderbird::::::::

Information

Published : 2021-11-03 01:15

Updated : 2022-01-04 12:15

NVD link : CVE-2021-38496

Mitre link : CVE-2021-38496

JSON object : View

Products Affected

mozilla

firefox_esr
thunderbird
firefox

CWE

CWE-416

Use After Free

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