CVE-2021-29946 — Integer Overflow or Wraparound in Mozilla Firefox

CWE-190 — Integer Overflow or Wraparound15 documents8 sources
Severity
8.8HIGHNVD
OSV7.4
EPSS
0.2%
top 62.73%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird
Timeline
PublishedJun 24
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages9 packages

▶CVEListV5mozilla/firefoxunspecified — 88
▶NVDmozilla/firefox< 88.0
▶CVEListV5mozilla/firefox_esrunspecified — 78.10
▶NVDmozilla/firefox_esr< 78.10
▶Ubuntumozilla/firefox< 88.0+build2-0ubuntu0.16.04.1+2

🔴Vulnerability Details

6
GHSA
GHSA-c8wg-rg36-89gm: 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 Al↗2022-05-24
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OSV
thunderbird vulnerabilities↗2021-06-25
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CVEList
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 Al↗2021-06-24
▶
OSV
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 Al↗2021-06-24
▶
OSV
thunderbird vulnerabilities↗2021-06-22
▶

📋Vendor Advisories

8
Ubuntu
Thunderbird vulnerabilities↗2021-06-25
▶
Ubuntu
Thunderbird vulnerabilities↗2021-06-22
▶
Ubuntu
Firefox vulnerabilities↗2021-04-26
▶
Red Hat
Mozilla: Port blocking could be bypassed↗2021-04-19
▶
Debian
CVE-2021-29946: firefox - Ports that were written as an integer overflow above the bounds of a 16-bit inte...↗2021
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CVE-2021-29946 — Integer Overflow or Wraparound | cvebase