CVE-2020-26974

When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

CVSS v3 8.8 HIGH
CVSS v2.0 6.8 MEDIUM

8.8^/10

CVSS v3 : 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://bugzilla.mozilla.org/show_bug.cgi?id=1681022	Permissions Required
https://www.mozilla.org/security/advisories/mfsa2020-54/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-55/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-56/	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2021-01-07 14:15

Updated : 2024-02-28 18:08

NVD link : CVE-2020-26974

Mitre link : CVE-2020-26974

CVE.ORG link : CVE-2020-26974

JSON object : View

Products Affected

mozilla

firefox
thunderbird
firefox_esr

CWE

CWE-787

Out-of-bounds Write

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