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Fencer Intel
high 7.8

CVE-2020-24331 json

An issue was discovered in TrouSerS through 0.3.14.

published 2020-08-13 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-17065

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is started with root privileges, the tss user still has read and write access to the /etc/tcsd.conf file (which contains various settings related to this daemon).

Patch / fix

  • trousers Debian 14, Debian 13, Debian 12 0.3.15-0.1

debian advisories DEBIAN-CVE-2020-24331

  • trousers RHEL 8 0.3.15-1.el8
  • trousers-lib RHEL 8 0.3.15-1.el8

red hat advisories RHSA-2021:1627

  • trousers AlmaLinux 8 0.3.15-1.el8
  • trousers-lib AlmaLinux 8 0.3.15-1.el8

almalinux advisories ALSA-2021:1627

  • trousers Rocky Linux 8 0.3.15-1.el8

rocky linux advisories RLSA-2021:1627

  • trousers CBL-Mariner 2.0 0.3.14-7

azure linux advisories AZL-6926

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-24331 updated cvss 7.8

trousers: tss user still has read and write access to the /etc/tcsd.conf file if tcsd is started as root

  • Red Hat Enterprise Linux 5 trousers Red Hat Enterprise Linux 6 trousers
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 trousers
    affected: no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder (v. 8) trousers-devel 0.3.15-1.el8, trousers-debuginfo 0.3.15-1.el8, trousers-debugsource 0.3.15-1.el8, trousers-lib-debuginfo 0.3.15-1.el8 Red Hat Enterprise Linux BaseOS (v. 8) trousers 0.3.15-1.el8, trousers-lib 0.3.15-1.el8
    fixed: vendor fix RHSA-2021:1627

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • sourceforge.net https://sourceforge.net/p/trousers/mailman/message/37015817/ referenced PoC, tagged "exploit" by a source, unverified
  • bugzilla.suse.com https://bugzilla.suse.com/show_bug.cgi?id=1164472 referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2020/08/14/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-269 Improper Privilege Management

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.