CVE-2020-6814 — Out-of-bounds Write in Mozilla Firefox

CWE-787 — Out-of-bounds WriteCWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-120 — Classic Buffer Overflow18 documents10 sources
Severity
9.8CRITICALNVD
OSV8.8OSV6.5
EPSS
0.8%
top 25.29%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird+1 more
Timeline
PublishedMar 25
Latest updateMay 24

Description

Mozilla developers reported memory safety bugs present in Firefox and Thunderbird 68.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.

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 Packages9 packages

▶CVEListV5mozilla/firefoxunspecified — 74+1
▶NVDmozilla/firefox< 74.0
▶CVEListV5mozilla/firefox_esrunspecified — 68.6
▶NVDmozilla/firefox_esr< 68.6.0
▶Ubuntumozilla/firefox< 74.0+build3-0ubuntu0.16.04.1+1

Also affects: Ubuntu Linux 16.04, 18.04, 19.10

🔴Vulnerability Details

6
GHSA
GHSA-36f2-2h7g-5h9g: Mozilla developers reported memory safety bugs present in Firefox and Thunderbird 68↗2022-05-24
▶
OSV
thunderbird vulnerabilities↗2020-04-21
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OSV
thunderbird vulnerabilities↗2020-04-13
▶
OSV
CVE-2020-6814: Mozilla developers reported memory safety bugs present in Firefox and Thunderbird 68↗2020-03-25
▶
CVEList
CVE-2020-6814: Mozilla developers reported memory safety bugs present in Firefox and Thunderbird 68↗2020-03-25
▶

📋Vendor Advisories

10
Oracle
Oracle Oracle Supply Chain Risk Matrix: Install (Apache Groovy) — CVE-2016-6814↗2020-07-15
▶
Ubuntu
Thunderbird vulnerabilities↗2020-04-21
▶
Ubuntu
Thunderbird vulnerabilities↗2020-04-13
▶
Ubuntu
Firefox vulnerabilities↗2020-03-11
▶
Red Hat
Mozilla: Memory safety bugs fixed in Firefox 74 and Firefox ESR 68.6↗2020-03-10
▶

💬Community

1
Bugzilla
CVE-2020-6814 Mozilla: Memory safety bugs fixed in Firefox 74 and Firefox ESR 68.6↗2020-03-10
▶
CVE-2020-6814 — Out-of-bounds Write in Mozilla Firefox | cvebase