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CVE-2021-29946

nvd nist
Published: Jun 24, 2021Modified: Nov 21, 2024

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8.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 5.9
Source: NVD

Description

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.

Affected (3)

Mozilla
3 products
Firefox
Firefox Esr
Thunderbird
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Firefox
Before 88.0
Firefox Esr
Before 78.10
Thunderbird
Before 78.10

Related CWEs

CWE-190
Integer Overflow or Wraparound
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (8)

Source: security@mozilla.org
Permissions RequiredVendor Advisory
Source: security@mozilla.org
Release NotesVendor Advisory
Source: security@mozilla.org
Release NotesVendor Advisory
Source: security@mozilla.org
Release NotesVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Permissions RequiredVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Release NotesVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Release NotesVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Release NotesVendor Advisory

Timeline

No history available yet.