CVE-2019-11755

high
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Description

A crafted S/MIME message consisting of an inner encryption layer and an outer SignedData layer was shown as having a valid digital signature, although the signer might have had no access to the contents of the encrypted message, and might have stripped a different signature from the encrypted message. Previous versions had only suppressed showing a digital signature for messages with an outer multipart/signed layer. This vulnerability affects Thunderbird < 68.1.1.

References

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html

https://bugzilla.mozilla.org/show_bug.cgi?id=1240290

https://lists.debian.org/debian-lts-announce/2019/11/msg00017.html

https://seclists.org/bugtraq/2019/Nov/24

https://usn.ubuntu.com/4202-1/

https://usn.ubuntu.com/4335-1/

https://www.debian.org/security/2019/dsa-4571

https://www.mozilla.org/security/advisories/mfsa2019-32/

Details

Source: MITRE

Published: 2019-09-27

Updated: 2020-08-24

Type: CWE-347

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Tenable Plugins

View all (8 total)

IDNameProductFamilySeverity
135896Ubuntu 16.04 LTS : Thunderbird vulnerabilities (USN-4335-1)NessusUbuntu Local Security Checks
critical
132011Ubuntu 18.04 LTS / 19.10 : Thunderbird regression (USN-4202-2)NessusUbuntu Local Security Checks
high
131139Debian DSA-4571-1 : thunderbird - security updateNessusDebian Local Security Checks
high
131136Debian DLA-1997-1 : thunderbird security updateNessusDebian Local Security Checks
high
129663openSUSE Security Update : MozillaThunderbird (openSUSE-2019-2249)NessusSuSE Local Security Checks
high
129662openSUSE Security Update : MozillaThunderbird (openSUSE-2019-2248)NessusSuSE Local Security Checks
high
129390Mozilla Thunderbird < 68.1.1NessusWindows
high
129389Mozilla Thunderbird < 68.1.1NessusMacOS X Local Security Checks
high