CVE-2021-29988

Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of bounds read or memory corruption, and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.

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/mfsa2021-34/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-33/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-36/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-35/	Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1717922	Exploit Issue Tracking Vendor Advisory
https://security.gentoo.org/glsa/202202-03	Third Party Advisory
https://security.gentoo.org/glsa/202208-14	Third Party Advisory

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Configurations

Configuration 1 (hide)

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

Information

Published : 2021-08-17 13:15

Updated : 2022-12-09 11:15

NVD link : CVE-2021-29988

Mitre link : CVE-2021-29988

JSON object : View

CWE

CWE-125

Out-of-bounds Read

CWE-787

Out-of-bounds Write

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Products Affected

mozilla

firefox
firefox_esr
thunderbird

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