CVE-2020-6795 — NULL Pointer Dereference in Mozilla Thunderbird

CWE-476 — NULL Pointer Dereference11 documents8 sources
Severity
6.5MEDIUMNVD
OSV8.8
EPSS
0.7%
top 28.25%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Mozilla ThunderbirdDebian ThunderbirdMozilla Firefox
Timeline
PublishedMar 2
Latest updateMay 24

Description

When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an unexploitable crash. This vulnerability affects Thunderbird < 68.5.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages6 packages

▶debiandebian/thunderbird< thunderbird 1:68.5.0-1 (bookworm)
▶CVEListV5mozilla/thunderbirdunspecified — 68.5
▶NVDmozilla/thunderbird< 68.5.0
▶Debianmozilla/thunderbird< 1:68.5.0-1+3
▶Ubuntumozilla/thunderbird< 1:68.7.0+build1-0ubuntu0.16.04.2+1

🔴Vulnerability Details

4
GHSA
GHSA-4whv-ch98-q6fp: When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an↗2022-05-24
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OSV
thunderbird vulnerabilities↗2020-04-21
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OSV
thunderbird vulnerabilities↗2020-04-13
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OSV
CVE-2020-6795: When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an↗2020-03-02
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📋Vendor Advisories

5
Ubuntu
Thunderbird vulnerabilities↗2020-04-21
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Ubuntu
Thunderbird vulnerabilities↗2020-04-13
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Red Hat
Mozilla: Crash processing S/MIME messages with multiple signatures↗2020-02-11
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Debian
CVE-2020-6795: thunderbird - When processing a message that contains multiple S/MIME signatures, a bug in the...↗2020
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Mozilla
Mozilla Foundation Security Advisory 2020-07: CVE-2020-6795↗
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💬Community

1
Bugzilla
CVE-2020-6795 Mozilla: Crash processing S/MIME messages with multiple signatures↗2020-02-11
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