CVE-2020-15667 — Out-of-bounds Write in Mozilla Firefox

CWE-787 — Out-of-bounds WriteCWE-434 — Unrestricted File UploadCWE-122 — Heap-based Buffer Overflow7 documents7 sources
Severity
8.8HIGHNVD
EPSS
0.9%
top 24.42%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxDebian Firefox
Timeline
PublishedOct 1
Latest updateMay 24

Description

When processing a MAR update file, after the signature has been validated, an invalid name length could result in a heap overflow, leading to memory corruption and potentially arbitrary code execution. Within Firefox as released by Mozilla, this issue is only exploitable with the Mozilla-controlled signing key. This vulnerability affects Firefox < 80.

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 Packages4 packages

▶CVEListV5mozilla/firefoxunspecified — 80
▶NVDmozilla/firefox< 80.0
▶mozillamozilla/firefox
▶debiandebian/firefox< firefox 80.0-1 (sid)

🔴Vulnerability Details

2
GHSA
GHSA-93j6-6353-95h4: When processing a MAR update file, after the signature has been validated, an invalid name length could result in a heap overflow, leading to memory c↗2022-05-24
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OSV
CVE-2020-15667: When processing a MAR update file, after the signature has been validated, an invalid name length could result in a heap overflow, leading to memory c↗2020-10-01
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📋Vendor Advisories

3
Red Hat
firefox: Invalid name length could result in a heap buffer overflow, leading to memory corruption↗2020-08-25
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Debian
CVE-2020-15667: firefox - When processing a MAR update file, after the signature has been validated, an in...↗2020
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Mozilla
Mozilla Foundation Security Advisory 2020-36: CVE-2020-15667↗
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💬Community

1
Bugzilla
CVE-2020-15667 firefox: Invalid name length could result in a heap buffer overflow, leading to memory corruption↗2020-10-02
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