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Mageia: 2021-0457 Moderate: ClamAV Denial of Service Vulnerability

mageia
Calendar Grey August 31, 2020
Dist Mageia Esm H88
A new Mageia update for HylaFAX+ addresses potential privilege escalation vulnerabilities related to race conditions. Uncover essential security updates.
In HylaFAX+ through 7.0.2, the faxsetup utility calls chown on files in user-owned directories

Summary

In HylaFAX+ through 7.0.2, the faxsetup utility calls chown on files in user-owned directories. By winning a race, a local attacker could use this to escalate his privileges to root (CVE-2020-15396).
HylaFAX+ through 7.0.2 has scripts that execute binaries from directories writable by unprivileged users (e.g., locations under /var/spool/hylafax that are writable by the uucp account). This allows these users to execute code in the context of the user calling these binaries (often root) (CVE-2020-15397).
The hylafax+ package has been updated to version 7.0.3, fixing thesee issues and several other bugs.

References

- https://bugs.mageia.org/show_bug.cgi?id=27170

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/J52QFVREJWJ35YSEEDDRMZQ2LM2H2WE6/

- https://hylafax.sourceforge.io/news/7.0.3.php

- https://www.cve.org/CVERecord?id=CVE-2020-15396

- https://www.cve.org/CVERecord?id=CVE-2020-15397

Topics%20covered

Topics Covered

security advisory privilege escalation security fix race condition root access Mageia hylafax+

Resolution

SRPMS

- 7/core/hylafax+-7.0.3-1.mga7

Publication date: 31 Aug 2020
URL: https://advisories.mageia.org/MGASA-2020-0356.html
Type: security
CVE: CVE-2020-15396, CVE-2020-15397

Topics%20covered

Topics Covered

security advisory privilege escalation security fix race condition root access Mageia hylafax+

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