Improper Privilege Management in HylaFAX - CVE-2020-15396

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Main Vulnerability Database Vulnerabilities #VU32879

Improper Privilege Management in HylaFAX - CVE-2020-15396

Published: July 29, 2020 / Updated: August 5, 2020


Vulnerability identifier: #VU32879
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-15396
CWE-ID: CWE-269
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges on the system.

In HylaFAX+ through 7.0.2 and HylaFAX Enterprise, 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.



Affected software

HylaFAX
Gentoo Linux
Fedora
SUSE Linux
Opensuse
hylafaxplus (Alpine package)
hylafax+

How to mitigate CVE-2020-15396

Install updates from vendor's website.

HylaFAX - update to 7.0.3
hylafaxplus (Alpine package) - update to 7.0.0-r1
hylafax+ - addressed in versions 7.0.3-1.el6, 7.0.3-1.el7, 7.0.3-1.fc31, 7.0.3-1.fc32

External References

Related Security Bulletins