---
title: "CVE-2018-12356\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2018-12356?format=md
keywords: index, follow
---

# CVE-2018-12356

Publication date 15 June 2018

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2018-12356?format=md#impact-score)

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## Description

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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| password-store | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Vulnerable |
| 17.10 artful | Ignored end of life |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.8 · Critical

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.8 · Critical |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12356)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-12356)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-12356)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-12356)

### Other references

* <https://lists.zx2c4.com/pipermail/password-store/2018-June/003308.html>
* <https://neopg.io/blog/pass-signature-spoof/>
* <http://www.openwall.com/lists/oss-security/2018/06/14/3>
* <http://openwall.com/lists/oss-security/2018/06/14/3>
* <https://git.zx2c4.com/password-store/commit/?id=8683403b77f59c56fcb1f05c61ab33b9fd61a30d>
* <https://www.cve.org/CVERecord?id=CVE-2018-12356>