CVE-2018-18509

medium
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Description

A flaw during verification of certain S/MIME signatures causes emails to be shown in Thunderbird as having a valid digital signature, even if the shown message contents aren't covered by the signature. The flaw allows an attacker to reuse a valid S/MIME signature to craft an email message with arbitrary content. This vulnerability affects Thunderbird < 60.5.1.

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00043.html

http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html

http://seclists.org/fulldisclosure/2019/Apr/38

http://www.openwall.com/lists/oss-security/2019/04/30/4

https://access.redhat.com/errata/RHSA-2019:1144

https://bugzilla.mozilla.org/show_bug.cgi?id=1507218

https://github.com/RUB-NDS/Johnny-You-Are-Fired

https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf

https://www.mozilla.org/security/advisories/mfsa2019-06/

Details

Source: MITRE

Published: 2019-04-26

Updated: 2019-06-03

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: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Impact Score: 1.4

Exploitability Score: 3.9

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

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

Tenable Plugins

View all (20 total)

IDNameProductFamilySeverity
127579Oracle Linux 8 : thunderbird (ELSA-2019-1144)NessusOracle Linux Local Security Checks
critical
127459NewStart CGSL MAIN 4.05 : thunderbird Multiple Vulnerabilities (NS-SA-2019-0169)NessusNewStart CGSL Local Security Checks
critical
127319NewStart CGSL MAIN 4.06 : thunderbird Multiple Vulnerabilities (NS-SA-2019-0095)NessusNewStart CGSL Local Security Checks
critical
127257NewStart CGSL CORE 5.04 / MAIN 5.04 : thunderbird Multiple Vulnerabilities (NS-SA-2019-0062)NessusNewStart CGSL Local Security Checks
critical
124845RHEL 8 : thunderbird (RHSA-2019:1144)NessusRed Hat Local Security Checks
critical
123817openSUSE Security Update : MozillaThunderbird (openSUSE-2019-1162)NessusSuSE Local Security Checks
critical
123581GLSA-201904-07 : Mozilla Thunderbird and Firefox: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
123562CentOS 7 : thunderbird (CESA-2019:0681)NessusCentOS Local Security Checks
critical
123561CentOS 6 : thunderbird (CESA-2019:0680)NessusCentOS Local Security Checks
critical
123488RHEL 7 : thunderbird (RHSA-2019:0681)NessusRed Hat Local Security Checks
critical
123487RHEL 6 : thunderbird (RHSA-2019:0680)NessusRed Hat Local Security Checks
critical
123485Oracle Linux 7 : thunderbird (ELSA-2019-0681)NessusOracle Linux Local Security Checks
critical
123484Oracle Linux 6 : thunderbird (ELSA-2019-0680)NessusOracle Linux Local Security Checks
critical
122493openSUSE Security Update : MozillaThunderbird (openSUSE-2019-251)NessusSuSE Local Security Checks
critical
122482Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : Thunderbird vulnerabilities (USN-3897-1)NessusUbuntu Local Security Checks
critical
122470openSUSE Security Update : MozillaThunderbird (openSUSE-2019-250)NessusSuSE Local Security Checks
high
122402Mozilla Thunderbird < 60.5.1NessusWindows
high
122401Mozilla Thunderbird < 60.5.1NessusMacOS X Local Security Checks
high
122269Debian DSA-4392-1 : thunderbird - security updateNessusDebian Local Security Checks
critical
122263Debian DLA-1678-1 : thunderbird security updateNessusDebian Local Security Checks
critical