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.
Products affected by CVE-2020-5202
- 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:*:*:*:*:*:*
- cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-5202
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-5202
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
2.1
|
LOW | AV:L/AC:L/Au:N/C:P/I:N/A:N |
3.9
|
2.9
|
NIST | |
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
1.8
|
3.6
|
NIST |
References for CVE-2020-5202
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https://seclists.org/oss-sec/2020/q1/21
oss-sec: CVE-2020-5202: apt-cacher-ng: a local unprivileged user can impersonate the apt-cacher-ng daemon, possible credentials leakExploit;Mailing List;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2020/01/20/4
oss-security - CVE-2020-5202: apt-cacher-ng: a local unprivileged user can impersonate the apt-cacher-ng daemon, possible credentials leakExploit;Mailing List;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00057.html
[security-announce] openSUSE-SU-2020:0124-1: important: Security updateMailing List;Third Party Advisory
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https://security-tracker.debian.org/tracker/CVE-2020-5202
CVE-2020-5202Patch;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00065.html
[security-announce] openSUSE-SU-2020:0146-1: important: Security updateMailing List;Third Party Advisory
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