Vulnerability Monitor

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CVE-2019-18183

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.

Published

2020-02-24T15:15:11.457

Last Modified

2024-11-21T04:32:47.153

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-78

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	pacman_project	pacman	< 5.2	Yes
Operating System	fedoraproject	fedora	30	Yes
Operating System	fedoraproject	fedora	31	Yes
Operating System	fedoraproject	fedora	32	Yes

References

https://git.archlinux.org/pacman.git/commit/?id=c0e9be7973be6c81b22fde91516fb8991e7bb07b Patch, Third Party Advisory ([email protected])
https://git.archlinux.org/pacman.git/tree/lib/libalpm/sync.c?h=v5.1.3#n767 Exploit, Third Party Advisory ([email protected])
https://github.com/alpinelinux/alpine-secdb/blob/master/v3.11/community.yaml Release Notes, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2TTUXXUW5OCOASIRMJK4RHEPLEA33Y6C/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K53C45EDWBU3UCN3IRIGR5EZUNWXS7BW/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KIDJ4XKBZRRVRFFGKUA3ZU6NFIP5JUG3/ ([email protected])
https://git.archlinux.org/pacman.git/commit/?id=c0e9be7973be6c81b22fde91516fb8991e7bb07b Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://git.archlinux.org/pacman.git/tree/lib/libalpm/sync.c?h=v5.1.3#n767 Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/alpinelinux/alpine-secdb/blob/master/v3.11/community.yaml Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2TTUXXUW5OCOASIRMJK4RHEPLEA33Y6C/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K53C45EDWBU3UCN3IRIGR5EZUNWXS7BW/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KIDJ4XKBZRRVRFFGKUA3ZU6NFIP5JUG3/ (af854a3a-2127-422b-91ae-364da2661108)