CRITICAL
pacman before 5.2 is vulnerable to arbitrary command injection in lib/libalpm/sync.c in the apply_deltas() function
Published Feb 24, 2020
9.8
CRITICALCVSS 3.1
EPSS 3.67%
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.
Affected products
No data.
Configuration 1
- < 5.2
Configuration 2
OR
- 30
- 31
- 32
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
6.8 MEDIUM NVD
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
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.67% 0.03672
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.03672
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 3.67% (0.03672) | 89.32th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.67% (0.03672) | 88.19th | v5 (v2026.06.15) |
| Nov 21, 2025 | 7.87% (0.07867) | 91.65th | v4 (v2025.03.14) |
| Nov 18, 2025 | 16.22% (0.16219) | 94.27th | v4 (v2025.03.14) |
| May 11, 2025 | 7.87% (0.07867) | 91.52th | v4 (v2025.03.14) |
| Mar 30, 2025 | 16.22% (0.16219) | 94.26th | v4 (v2025.03.14) |
| Mar 29, 2025 | 24.15% (0.24147) | 93.66th | v4 (v2025.03.14) |
| Mar 17, 2025 | 16.22% (0.16219) | 94.33th | v4 (v2025.03.14) |
| Jul 20, 2024 | 1.60% (0.01600) | 87.55th | v3 (v2023.03.01) |
| Jun 19, 2024 | 1.60% (0.01600) | 87.46th | v3 (v2023.03.01) |
| Jan 31, 2024 | 1.62% (0.01621) | 86.20th | v3 (v2023.03.01) |
| Jan 15, 2024 | 1.42% (0.01423) | 85.11th | v3 (v2023.03.01) |
| Nov 8, 2023 | 1.48% (0.01481) | 85.30th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.38% (0.00384) | 68.85th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.56% (0.02564) | 82.02th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.56% (0.02564) | 80.25th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.30% (0.12300) | 89.42th | v2 (v2022.01.01) |
| Feb 3, 2022 | 6.21% (0.06208) | 81.93th | v1 |
| Jan 6, 2022 | 6.21% (0.06208) | 81.75th | v1 |
| Sep 1, 2021 | 1.45% (0.01454) | 71.88th | v1 |
| Apr 14, 2021 | 1.45% (0.01454) | 0.00th | v1 |
Weaknesses (1)
References (6)
- https://git.archlinux.org/pacman.git/commit/?id=c0e9be7973be6c81b22fde91516fb8991e7bb07b x_refsource_MISCPatchThird Party Advisory
- https://git.archlinux.org/pacman.git/tree/lib/libalpm/sync.c?h=v5.1.3#n767 x_refsource_MISCExploitThird Party Advisory
- https://github.com/alpinelinux/alpine-secdb/blob/master/v3.11/community.yaml x_refsource_MISCRelease NotesThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2TTUXXUW5OCOASIRMJK4RHEPLEA33Y6C/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K53C45EDWBU3UCN3IRIGR5EZUNWXS7BW/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KIDJ4XKBZRRVRFFGKUA3ZU6NFIP5JUG3/ vendor-advisoryx_refsource_FEDORA
| Link | Providers | Tags |
|---|---|---|
| https://git.archlinux.org/pacman.git/commit/?id=c0e9be7973be6c81b22fde91516fb8991e7bb07b | x_refsource_MISCPatchThird Party Advisory | |
| https://git.archlinux.org/pacman.git/tree/lib/libalpm/sync.c?h=v5.1.3#n767 | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/alpinelinux/alpine-secdb/blob/master/v3.11/community.yaml | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2TTUXXUW5OCOASIRMJK4RHEPLEA33Y6C/ | vendor-advisoryx_refsource_FEDORA | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K53C45EDWBU3UCN3IRIGR5EZUNWXS7BW/ | vendor-advisoryx_refsource_FEDORA | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KIDJ4XKBZRRVRFFGKUA3ZU6NFIP5JUG3/ | vendor-advisoryx_refsource_FEDORA |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Feb 24, 2020
Updated Aug 5, 2024
Reserved Oct 17, 2019
Link CVE-2019-18183
CISA Vulnrichment
Updated n/a