CVE-2019-18183 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://git.archlinux.org/pacman.git/commit/?id=c0e9be7973be6c81b22fde91516fb8991e7bb07b https://git.archlinux.org/pacman.git/tree/lib/libalpm/sync.c?h=v5.1.3n767 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/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8