Improper Verification of Cryptographic Signature Affecting password-store package, versions <1.7.2-1
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-DEBIAN12-PASSWORDSTORE-1556271
- published15 Jun 2018
- disclosed15 Jun 2018
Introduced: 15 Jun 2018
CVE-2018-12356 (opens in a new tab)How to fix?
Upgrade Debian:12 password-store to version 1.7.2-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream password-store package and not the password-store package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
An issue was discovered in password-store.sh in pass in Simple Password Store 1.7.x before 1.7.2. The signature verification routine parses the output of GnuPG with an incomplete regular expression, which allows remote attackers to spoof file signatures on configuration files and extension scripts. Modifying the configuration file allows the attacker to inject additional encryption keys under their control, thereby disclosing passwords to the attacker. Modifying the extension scripts allows the attacker arbitrary code execution.
References
- https://security-tracker.debian.org/tracker/CVE-2018-12356
- 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://git.zx2c4.com/password-store/commit/?id=8683403b77f59c56fcb1f05c61ab33b9fd61a30d
- https://lists.zx2c4.com/pipermail/password-store/2018-June/003308.html
- http://openwall.com/lists/oss-security/2018/06/14/3
- http://www.openwall.com/lists/oss-security/2019/04/30/4
- http://seclists.org/fulldisclosure/2019/Apr/38
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-12356