CVE-2020-24332
published 2020-08-13CVE-2020-24332: An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is started with root privileges, the creation of the system.data file is prone to…
PriorityP422medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.55%
42.0th percentile
An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is started with root privileges, the creation of the system.data file is prone to symlink attacks. The tss user can be used to create or corrupt existing files, which could possibly lead to a DoS attack.
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_0.3.14-7_on_cbl_mariner_1.0 | — | — |
| 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 |
| trustedcomputinggroup | trousers | <= 0.3.14 | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
osv5.5MEDIUM
vendor_debian5.5LOW
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
trousers: tss user can be used to create or corrupt existing files, this could lead to DoS
vendor_redhat·2020-08-13·CVSS 5.5
CVE-2020-24332 [MEDIUM] CWE-59 trousers: tss user can be used to create or corrupt existing files, this could lead to DoS
trousers: tss user can be used to create or corrupt existing files, this could lead to DoS
An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is started with root privileges, the creation of the system.data file is prone to symlink attacks. The tss user can be used to create or corrupt existing files, which could possibly lead to a DoS attack.
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 creation of the system.data file is prone to symlink attacks. The tss user can be used to cre
vendor_msrc·2020-08-11·CVSS 5.5
CVE-2020-24332 [MEDIUM] CWE-59 An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is started with root privileges the creation of the system.data file is prone to symlink attacks. The tss user can be used to cre
An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is started with root privileges the creation of the system.data file is prone to symlink attacks. The tss user can be used to create or corrupt existing files which could possibly lead to a DoS attack.
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 informa
Debian
CVE-2020-24332: trousers - An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is starte...
vendor_debian·2020·CVSS 5.5
CVE-2020-24332 [MEDIUM] CVE-2020-24332: 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 creation of the system.data file is prone to symlink attacks. The tss user can be used to create or corrupt existing files, which could possibly lead to a DoS attack.
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-46r6-q3g6-pccf: An issue was discovered in TrouSerS through 0
ghsa_unreviewed·2022-05-24
CVE-2020-24332 [MEDIUM] CWE-59 GHSA-46r6-q3g6-pccf: 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 creation of the system.data file is prone to symlink attacks. The tss user can be used to create or corrupt existing files, which could possibly lead to a DoS attack.
OSV
CVE-2020-24332: An issue was discovered in TrouSerS through 0
osv·2020-08-13·CVSS 5.5
CVE-2020-24332 [MEDIUM] CVE-2020-24332: 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 creation of the system.data file is prone to symlink attacks. The tss user can be used to create or corrupt existing files, which could possibly lead to a DoS attack.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-24332 trousers: tss user can be used to create or corrupt existing files, this could lead to DoS
bugzilla·2020-08-19·CVSS 5.5
CVE-2020-24332 [MEDIUM] CVE-2020-24332 trousers: tss user can be used to create or corrupt existing files, this could lead to DoS
CVE-2020-24332 trousers: tss user can be used to create or corrupt existing files, this could lead to DoS
If the tcsd daemon is started with root privileges, the creation of the system.data file is prone to symlink attacks. The tss user can be used to create or corrupt existing files, which could possibly lead to a DoS attack.
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 1870053]
---
Upstream commit for this issue:
https://sourceforge.net/p/trousers/trousers/ci/e74dd1d96753b0538192143adf58d04fcd3b242b/
---
When tcsd starts it opens the system.data file, however it doesn't check if it already exists as a symbolic link. An attack can leverage that to force tcsd to ove
Bugzilla
CVE-2020-24332 trousers: tss user can be used to create or corrupt existing files, this could lead to DoS [fedora-all]
bugzilla·2020-08-19·CVSS 5.5
CVE-2020-24332 [MEDIUM] CVE-2020-24332 trousers: tss user can be used to create or corrupt existing files, this could lead to DoS [fedora-all]
CVE-2020-24332 trousers: tss user can be used to create or corrupt existing files, this could lead to DoS [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.
NOTE: this
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