CVE-2021-29945

The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. *Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVSS v3.0 6.5 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1700690	Issue Tracking Permissions Required Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-15/	Release Notes Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-16/	Release Notes Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-14/	Release Notes Vendor Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox:::::::x86:*
	cpe:2.3:a:mozilla:firefox_esr:::::::x86:*
	cpe:2.3:a:mozilla:thunderbird:::::::x86:*

Information

Published : 2021-06-24 07:15

Updated : 2021-06-30 12:01

NVD link : CVE-2021-29945

Mitre link : CVE-2021-29945

JSON object : View

CWE

CWE-682

Incorrect Calculation

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Products Affected

mozilla

firefox
firefox_esr
thunderbird

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