CVE-2020-5202

 

Published at: - 21-01-2020 07:15

Last modified: - 26-09-2022 12:16

Total changes: - 4

Description

apt-cacher-ng through 3.3 allows local users to obtain sensitive information by hijacking the hardcoded TCP port. The /usr/lib/apt-cacher-ng/acngtool program attempts to connect to apt-cacher-ng via TCP on localhost port 3142, even if the explicit SocketPath=/var/run/apt-cacher-ng/socket command-line option is passed. The cron job /etc/cron.daily/apt-cacher-ng (which is active by default) attempts this periodically. Because 3142 is an unprivileged port, any local user can try to bind to this port and will receive requests from acngtool. There can be sensitive data in these requests, e.g., if AdminAuth is enabled in /etc/apt-cacher-ng/security.conf. This sensitive data can leak to unprivileged local users that manage to bind to this port before the apt-cacher-ng daemon can.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://security-tracker.debian.org/tracker/CVE-2020-5202
• http://www.openwall.com/lists/oss-security/2020/01/20/4
• [oss-security] 20200120 CVE-2020-5202: apt-cacher-ng: a local unprivileged user can impersonate the apt-cacher-ng daemon, possible credentials leak-Exploit, Mailing List, Third Party Advisory
• openSUSE-SU-2020:0124-Mailing List, Third Party Advisory
• openSUSE-SU-2020:0146-Mailing List, Third Party Advisory

 

Keywords

NVD

 

CVE-2020-5202

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures