CVE-2020-6815 — Out-of-bounds Write in Mozilla Firefox

CWE-787 — Out-of-bounds WriteCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer9 documents8 sources
Severity
9.8CRITICALNVD
OSV6.5
EPSS
0.5%
top 36.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxDebian Firefox
Timeline
PublishedMar 25
Latest updateMay 24

Description

Mozilla developers reported memory safety and script safety bugs present in Firefox 73. Some of these bugs showed evidence of memory corruption or escalation of privilege and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 74.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages5 packages

▶CVEListV5mozilla/firefoxunspecified — 74
▶NVDmozilla/firefox< 74.0
▶Ubuntumozilla/firefox< 74.0+build3-0ubuntu0.16.04.1+2
▶mozillamozilla/firefox
▶debiandebian/firefox< firefox 74.0-1 (sid)

🔴Vulnerability Details

3
GHSA
GHSA-gw86-c7x2-pwcr: Mozilla developers reported memory safety and script safety bugs present in Firefox 73↗2022-05-24
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OSV
firefox vulnerabilities↗2020-03-11
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OSV
CVE-2020-6815: Mozilla developers reported memory safety and script safety bugs present in Firefox 73↗2020-03-11
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📋Vendor Advisories

4
Ubuntu
Firefox vulnerabilities↗2020-03-11
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Red Hat
Mozilla: Memory and script safety bugs fixed in Firefox 74↗2020-03-10
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Debian
CVE-2020-6815: firefox - Mozilla developers reported memory safety and script safety bugs present in Fire...↗2020
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Mozilla
Mozilla Foundation Security Advisory 2020-08: CVE-2020-6815↗
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💬Community

1
Bugzilla
CVE-2020-6815 Mozilla: Memory and script safety bugs fixed in Firefox 74↗2020-04-29
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