CVE Vulnerability

CVE-2021-29946

Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

6.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

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

References
Link Resource
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
https://bugzilla.mozilla.org/show_bug.cgi?id=1698503 Permissions Required Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Information

Published : 2021-06-24 02:15

Updated : 2021-06-25 08:06

NVD link : CVE-2021-29946

Mitre link : CVE-2021-29946

Products Affected
No products.
CWE
CWE-190