Vulnerability identifier: #VU66611

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-24332

CWE-ID: CWE-59

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
TrouSerS
Client/Desktop applications / Software for system administration

Vendor: TrouSerS

Description

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to creation of the system.data file is prone to symlink attacks if the tcsd daemon is started with root privileges. A local user can create or corrupt existing files, which could possibly lead to a DoS attack

Mitigation
Install update from vendor's website.

Vulnerable software versions

TrouSerS: 0.2.8 - 0.3.13

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External links
http://www.openwall.com/lists/oss-security/2020/08/14/1
http://bugzilla.suse.com/show_bug.cgi?id=1164472
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SSDL7COIFCZQMUBNAASNMKMX7W5JUHRD/
http://seclists.org/oss-sec/2020/q2/att-135/tcsd_fixes.patch
http://sourceforge.net/p/trousers/mailman/message/37015817/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.