CVE-2018-12019

Name: CVE-2018-12019
Creator: NVD / NIST
Published: 2018-06-13T23:29:00.393+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.14%

Last modified Jun 17, 2026

CVE-2018-12019 is a vulnerability of currently unknown severity. The signature verification routine in Enigmail before 2.0.7 interprets user ids as status/control messages and does not correctly keep track of the status of multiple signatures, which allows remote attackers to spoof arbitrary email signatures via public keys containing crafted primary user ids.. EPSS estimates a 2.14% chance of exploitation in the next 30 days.

Description

The signature verification routine in Enigmail before 2.0.7 interprets user ids as status/control messages and does not correctly keep track of the status of multiple signatures, which allows remote attackers to spoof arbitrary email signatures via public keys containing crafted primary user ids.

Metrics

EPSS Probability

2.14%

79.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-347

Affected Software

Vendor	Product	Versions
Enigmail	Enigmail	< 2.0.7

References

http://openwall.com/lists/oss-security/2018/06/13/10Mailing List, Third Party Advisory
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2019/Apr/38Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/04/30/4Mailing List, Third Party Advisory
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.enigmail.net/index.php/en/download/changelogExploit, Vendor Advisory
http://openwall.com/lists/oss-security/2018/06/13/10Mailing List, Third Party Advisory
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2019/Apr/38Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/04/30/4Mailing List, Third Party Advisory
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.enigmail.net/index.php/en/download/changelogExploit, Vendor Advisory

Timeline

Published: Jun 13, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-12019?

How severe is CVE-2018-12019?

Severity scoring for CVE-2018-12019 is pending analysis. The EPSS model estimates a 2.14% probability of exploitation in the next 30 days.

How do I fix CVE-2018-12019?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-12019?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST