CVE-2019-18183: OS Command Injection
First published: Mon Feb 24 2020(Updated: )
pacman before 5.2 is vulnerable to arbitrary command injection in lib/libalpm/sync.c in the apply_deltas() function. This can be exploited when unsigned databases are used. To exploit the vulnerability, the user must enable the non-default delta feature and retrieve an attacker-controlled crafted database and delta file.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Pacman Project | <5.2 | |
| Red Hat Fedora | =30 | |
| Red Hat Fedora | =31 | |
| Red Hat Fedora | =32 |
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Reference Links
- https://git.archlinux.org/pacman.git/commit/?id=c0e9be7973be6c81b22fde91516fb8991e7bb07b
- https://git.archlinux.org/pacman.git/tree/lib/libalpm/sync.c?h=v5.1.3#n767
- https://github.com/alpinelinux/alpine-secdb/blob/master/v3.11/community.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2TTUXXUW5OCOASIRMJK4RHEPLEA33Y6C/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K53C45EDWBU3UCN3IRIGR5EZUNWXS7BW/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KIDJ4XKBZRRVRFFGKUA3ZU6NFIP5JUG3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K53C45EDWBU3UCN3IRIGR5EZUNWXS7BW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2TTUXXUW5OCOASIRMJK4RHEPLEA33Y6C/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KIDJ4XKBZRRVRFFGKUA3ZU6NFIP5JUG3/
Frequently Asked Questions
What is the severity of CVE-2019-18183?
CVE-2019-18183 has a high severity due to its potential for arbitrary command injection.
How do I fix CVE-2019-18183?
To fix CVE-2019-18183, update Pacman to version 5.2 or later.
Who is affected by CVE-2019-18183?
CVE-2019-18183 affects users of Pacman versions prior to 5.2 and specific versions of Fedora.
What conditions are required for exploiting CVE-2019-18183?
Exploitation of CVE-2019-18183 requires the use of unsigned databases and enabling the non-default delta feature.
Is CVE-2019-18183 a local or remote vulnerability?
CVE-2019-18183 is considered a local vulnerability as it requires direct access to the vulnerable application.
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