Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 22.5%
CVSS Severity
CVSS v3 Score 5.5
CVSS v2 Score 2.1
References
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00057.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00065.html
- http://www.openwall.com/lists/oss-security/2020/01/20/4
- http://www.openwall.com/lists/oss-security/2020/01/20/4
- https://seclists.org/oss-sec/2020/q1/21
- https://security-tracker.debian.org/tracker/CVE-2020-5202
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00057.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00065.html
- http://www.openwall.com/lists/oss-security/2020/01/20/4
- http://www.openwall.com/lists/oss-security/2020/01/20/4
- https://seclists.org/oss-sec/2020/q1/21
- https://security-tracker.debian.org/tracker/CVE-2020-5202
Products affected by CVE-2020-5202
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:-
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.7.26
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.7.26-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.7.26-2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.7.27
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.7.27-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.0
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.0-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.0-2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.0-3
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.1-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.2-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.3
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.3-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.4
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.4-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.5
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.5-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.5-2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.6
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.6-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.7
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.7-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.8
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.8-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.9
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.8.9-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.0
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.0-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.1-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.2-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.3
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.3-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.3.1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.3.1-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.3.2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:0.9.3.2-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:1-2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:2-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:2-2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3-2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3-3
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3-4
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3-5
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3.1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3.1-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3.1-lp151.3.3.1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3.2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3.2-1
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3.2-2
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3.2-3
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cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:3.3
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:debian:debian_linux:8.0
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cpe:2.3:o:debian:debian_linux:9.0
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cpe:2.3:o:opensuse:backports:sle-15
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cpe:2.3:o:opensuse:leap:15.1