CVE-2019-18183
pacman before 5.2 is vulnerable to arbitrary command injection in lib/libalpm/sync.c in the...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
9.8
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.
- Record
CVE-2019-18183- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-78
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2019-18183- Updated
- 2026-11-02
EUVDEUVD-2019-7988 No score
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.
- Record
EUVD-2019-7988- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-66r9-jcx4-7f35 No score
pacman before 5.2 is vulnerable to arbitrary command injection in lib/libalpm/sync.c in the...
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.
- Record
GHSA-66r9-jcx4-7f35- Weakness
- CWE-78
- Updated
- 2026-11-02
OSVALPINE-CVE-2019-18183
9.8
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.
- Record
ALPINE-CVE-2019-18183- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
pacmanAlpine:v3.11 |
before 5.2.0-r0 | 5.2.0-r0 |
pacmanAlpine:v3.12 |
before 5.2.0-r0 | 5.2.0-r0 |
pacmanAlpine:v3.13 |
before 5.2.0-r0 | 5.2.0-r0 |
pacmanAlpine:v3.14 |
before 5.2.0-r0 | 5.2.0-r0 |
pacmanAlpine:v3.15 |
before 5.2.0-r0 | 5.2.0-r0 |
pacmanAlpine:v3.16 |
before 5.2.0-r0 | 5.2.0-r0 |
pacmanAlpine:v3.17 |
before 5.2.0-r0 | 5.2.0-r0 |
pacmanAlpine:v3.18 |
before 5.2.0-r0 | 5.2.0-r0 |
pacmanAlpine:v3.19 |
before 5.2.0-r0 | 5.2.0-r0 |
pacmanAlpine:v3.20 |
before 5.2.0-r0 | 5.2.0-r0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, facts, references | OSV | |
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-18183 is a critical vulnerability (CVSS 9.8) in Pacman Project Pacman, published February 24, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.67%, the 89th percentile. Fixed in pacman 5.2.0-r0.
References
git.archlinux.org/pacman.git/tree/lib/libalpm/sync.c?h=v5.1.3
git.archlinux.org/pacman.git/commit?id=c0e9be7973be6c81b22fde91516fb8991e7bb07b
github.com/alpinelinux/alpine-secdb/blob/master/v3.11/community.yaml
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K53C45EDWBU3UCN3IRIGR5EZUNWXS7BW
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2TTUXXUW5OCOASIRMJK4RHEPLEA33Y6C
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KIDJ4XKBZRRVRFFGKUA3ZU6NFIP5JUG3
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nvd.nist.gov/vuln/detail/CVE-2019-18183
lists.fedoraproject.org/archives/list/[email protected]/message/2TTUXXUW5OCOASIRMJK4RHEPLEA33Y6C
lists.fedoraproject.org/archives/list/[email protected]/message/K53C45EDWBU3UCN3IRIGR5EZUNWXS7BW
lists.fedoraproject.org/archives/list/[email protected]/message/KIDJ4XKBZRRVRFFGKUA3ZU6NFIP5JUG3
github.com/advisories/GHSA-66r9-jcx4-7f35
security.alpinelinux.org/vuln/CVE-2019-18183