CVE-2020-24331
published 2020-08-13CVE-2020-24331: 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…
PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.49%
38.2th percentile
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).
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | trousers | < trousers 0.3.15-0.1 (bookworm) | trousers 0.3.15-0.1 (bookworm) |
| fedoraproject | fedora | — | — |
| msrc | cbl2_trousers_0.3.14-7_on_cbl_mariner_2.0 | — | — |
| msrc | cm1_trousers_0.3.14-6_on_cbl_mariner_1.0 | — | — |
| trousers_project | trousers | <= 0.3.14 | — |
| trousers_project | trousers | >= 0 < 0.3.15-0.1 | 0.3.15-0.1 |
| trousers_project | trousers | >= 0 < 0.3.15-0.1 | 0.3.15-0.1 |
| trousers_project | trousers | >= 0 < 0.3.15-0.1 | 0.3.15-0.1 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.2HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
osv7.8HIGH
vendor_debian7.8LOW
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
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Red Hat
trousers: tss user still has read and write access to the /etc/tcsd.conf file if tcsd is started as root
vendor_redhat·2020-08-13·CVSS 7.8
CVE-2020-24331 [HIGH] trousers: tss user still has read and write access to the /etc/tcsd.conf file if tcsd is started as root
trousers: tss user still has read and write access to the /etc/tcsd.conf file if tcsd is started as root
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).
Package: trousers (Red Hat Enterprise Linux 5) - Out of support scope
Package: trousers (Red Hat Enterprise Linux 6) - Out of support scope
Package: trousers (Red Hat Enterprise Linux 7) - Will not fix
Microsoft
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 s
vendor_msrc·2020-08-11·CVSS 7.8
CVE-2020-24331 [HIGH] CWE-269 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 s
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).
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products i
Debian
CVE-2020-24331: trousers - An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is starte...
vendor_debian·2020·CVSS 7.8
CVE-2020-24331 [HIGH] CVE-2020-24331: trousers - An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is starte...
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).
Scope: local
bookworm: resolved (fixed in 0.3.15-0.1)
bullseye: open
forky: resolved (fixed in 0.3.15-0.1)
sid: resolved (fixed in 0.3.15-0.1)
trixie: resolved (fixed in 0.3.15-0.1)
GHSA
GHSA-92g6-rx66-6q4j: An issue was discovered in TrouSerS through 0
ghsa_unreviewed·2022-05-24
CVE-2020-24331 [HIGH] CWE-269 GHSA-92g6-rx66-6q4j: An issue was discovered in TrouSerS through 0
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).
OSV
CVE-2020-24331: An issue was discovered in TrouSerS through 0
osv·2020-08-13·CVSS 7.8
CVE-2020-24331 [HIGH] CVE-2020-24331: An issue was discovered in TrouSerS through 0
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).
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-24331 trousers: tss user still has read and write access to the /etc/tcsd.conf file if tcsd is started as root [fedora-all]
bugzilla·2020-08-19·CVSS 7.8
CVE-2020-24331 [HIGH] CVE-2020-24331 trousers: tss user still has read and write access to the /etc/tcsd.conf file if tcsd is started as root [fedora-all]
CVE-2020-24331 trousers: tss user still has read and write access to the /etc/tcsd.conf file if tcsd is started as root [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message
Bugzilla
CVE-2020-24331 trousers: tss user still has read and write access to the /etc/tcsd.conf file if tcsd is started as root
bugzilla·2020-08-19·CVSS 7.8
CVE-2020-24331 [HIGH] CVE-2020-24331 trousers: tss user still has read and write access to the /etc/tcsd.conf file if tcsd is started as root
CVE-2020-24331 trousers: tss user still has read and write access to the /etc/tcsd.conf file if tcsd is started as root
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).
External Reference:
https://www.openwall.com/lists/oss-security/2020/08/14/1
Discussion:
Created trousers tracking bugs for this issue:
Affects: fedora-all [bug 1870057]
---
Upstream commit for this issue:
https://sourceforge.net/p/trousers/trousers/ci/e74dd1d96753b0538192143adf58d04fcd3b242b/
---
There's an issue on trousers. If trousers daemon is started using root user the default, tss unprivileged user still can write to the configuration file due to missing checks at conf_file_
http://www.openwall.com/lists/oss-security/2020/08/14/1https://bugzilla.suse.com/show_bug.cgi?id=1164472https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SSDL7COIFCZQMUBNAASNMKMX7W5JUHRD/https://seclists.org/oss-sec/2020/q2/att-135/tcsd_fixes.patchhttps://sourceforge.net/p/trousers/mailman/message/37015817/http://www.openwall.com/lists/oss-security/2020/08/14/1https://bugzilla.suse.com/show_bug.cgi?id=1164472https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SSDL7COIFCZQMUBNAASNMKMX7W5JUHRD/https://seclists.org/oss-sec/2020/q2/att-135/tcsd_fixes.patchhttps://sourceforge.net/p/trousers/mailman/message/37015817/
2020-08-13
Published