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2 vulnerabilities found for APT by Debian
CVE-2026-109518 (GCVE-0-2026-109518)
Vulnerability from cvelistv5 – Published: 2026-11-04 15:49 – Updated: 2026-11-05 04:56
VLAI
EPSS
VEX
Title
APT RCE via hard link reuse
Summary
On Debian, Ubuntu, and derivative Linux distributions, an on-path attacker who can manipulate the HTTP traffic (including a malicious mirror or proxy) between an APT client and an archive server triggered by a package install can trick the client into installing an attacker-controlled unverified package and achieve remote code execution with root privileges.
The vulnerability is caused by the reuse of hard links and requires the client to follow redirects and retry the download of package files. It requires the client to have a non-zero Acquire::Retries configuration setting; the value 3 is the default starting with Debian 12 (bookworm) and Ubuntu 22.04 LTS (Jammy Jellyfish), so older releases are unaffected in a default configuration
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 00:00 UTC
Assigner
canonical
CNA
References
4 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Debian | APT |
Affected:
0 , < 1.2.36
(dpkg)
Affected: 1.4.0 , < 1.4.12 (dpkg) Affected: 1.6.0 , < 1.6.19 (dpkg) Affected: 1.8.0 , < 1.8.2.4 (dpkg) Affected: 1.8.3 , ≤ 1.8.5 (dpkg) Affected: 2.0.0 , < 2.0.12 (dpkg) Affected: 2.2.0 , < 2.2.5 (dpkg) Affected: 2.4.0 , < 2.4.15 (dpkg) Affected: 2.6.0 , < 2.6.2 (dpkg) Affected: 2.8.0 , < 2.8.4 (dpkg) Affected: 3.0.0 , < 3.0.4 (dpkg) Affected: 3.2.0 , < 3.2.1 (dpkg) Affected: 3.3.0 , < 3.3.6 (dpkg) |
|
| Ubuntu | APT |
Affected:
0 , < 1.0.1ubuntu2.24+esm4
(dpkg)
Affected: 1.2.0 , < 1.2.36+esm1 (dpkg) Affected: 1.6.0 , < 1.6.19+esm1 (dpkg) Affected: 2.0.0 , < 2.0.12+esm1 (dpkg) Affected: 2.4.0 , < 2.4.15ubuntu0.1 (dpkg) Affected: 2.8.0 , < 2.8.4ubuntu0.1 (dpkg) Affected: 3.2.0 , < 3.2.1ubuntu0.1 (dpkg) Affected: 3.3.0 , < 3.3.3ubuntu0.1 (dpkg) |
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CVE-2020-3810 (GCVE-0-2020-3810)
Vulnerability from cvelistv5 – Published: 2020-05-15 13:42 – Updated: 2024-09-17 01:01
VLAI
EPSS
VEX
Summary
Missing input validation in the ar/tar implementations of APT before version 2.1.2 could result in denial of service when processing specially crafted deb files.
Severity
No CVSS data available.
CWE
- apt out-of-bounds read in .ar/.tar implemations
Assigner
debian
CNA
References
8 references
| URL | Tags |
|---|---|
| https://github.com/Debian/apt/issues/111 | x_refsource_MISC |
| https://bugs.launchpad.net/bugs/1878177 | x_refsource_MISC |
| https://salsa.debian.org/apt-team/apt/-/commit/dc… | x_refsource_MISC |
| https://lists.debian.org/debian-security-announce… | x_refsource_MISC |
| https://tracker.debian.org/news/1144109/accepted-… | x_refsource_MISC |
| https://usn.ubuntu.com/4359-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://usn.ubuntu.com/4359-2/ | vendor-advisoryx_refsource_UBUNTU |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
Date Public
2020-05-14 00:00
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