CVE-2020-5202

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.

Link	Resource
https://security-tracker.debian.org/tracker/CVE-2020-5202	Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/20/4	Exploit Mailing List
https://seclists.org/oss-sec/2020/q1/21	Exploit Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00057.html	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00065.html	Mailing List Third Party Advisory

Configuration 1

cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:*:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* cpe:2.3:o:opensuse:backports:sle-15:sp1:*:*:*:*:*:*

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Published : 2020-01-21 06:15

Updated : 2022-01-01 08:03

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NVD link : CVE-2020-5202

Mitre link : CVE-2020-5202

Apt-cacher-ng

Apt-cacher-ng Project

NVD-CWE-noinfo