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Mageia 7: MGASA-2021-0297 Moderate: TrouSerS Daemon Access Risks

mageia
Calendar Grey June 28, 2021
Dist Mageia Esm H88
Revised TrouSerS bundles in Mageia address severe security threats linked to access rights and denial-of-service issues.
An issue was discovered in TrouSerS through 0.3.14

Summary

An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is started with root privileges instead of by the tss user, it fails to drop the root gid privilege when no longer needed (CVE-2020-24330).
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) (CVE-2020-24331).
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 (CVE-2020-24332).

References

- https://bugs.mageia.org/show_bug.cgi?id=26658

- https://www.openwall.com/lists/oss-security/2020/08/14/1

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/SSDL7COIFCZQMUBNAASNMKMX7W5JUHRD/

- https://www.cve.org/CVERecord?id=CVE-2020-24330

- https://www.cve.org/CVERecord?id=CVE-2020-24331

- https://www.cve.org/CVERecord?id=CVE-2020-24332

Topics%20covered

Topics Covered

security advisory moderate access control DoS daemon Mageia TrouSerS

Resolution

SRPMS

- 7/core/trousers-0.3.14-4.2.mga7

Publication date: 28 Jun 2021
URL: https://advisories.mageia.org/MGASA-2021-0297.html
Type: security
CVE: CVE-2020-24330, CVE-2020-24331, CVE-2020-24332

Topics%20covered

Topics Covered

security advisory moderate access control DoS daemon Mageia TrouSerS

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