Improper Verification of Cryptographic Signature Affecting enigmail package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1804-ENIGMAIL-324105
- published13 Jun 2018
- disclosed13 Jun 2018
Introduced: 13 Jun 2018
CVE-2018-12019 (opens in a new tab)How to fix?
There is no fixed version for Ubuntu:18.04 enigmail.
NVD Description
Note: Versions mentioned in the description apply only to the upstream enigmail package and not the enigmail package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-12019
- https://security-tracker.debian.org/tracker/CVE-2018-12019
- http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
- 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/changelog
- http://openwall.com/lists/oss-security/2018/06/13/10
- http://www.openwall.com/lists/oss-security/2019/04/30/4
- http://seclists.org/fulldisclosure/2019/Apr/38