What’s Vulnerable › Vulnerabilities

CVE-2020-15396

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-06-30 · updated 2026-06-17
• Weakness: CWE-362

Description

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 products

• Fedoraproject Fedora: 31, 32
• Hylafax+ Project Hylafax+: through 7.0.2
• ifax Hylafax Enterprise: all versions
• openSUSE Backports Sle: 15.0-sp1, 15.0-sp2
• openSUSE Leap: 15.1, 15.2

References

• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00039.html
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00040.html
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00046.html
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00054.html
• https://bugzilla.suse.com/show_bug.cgi?id=1173521
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J52QFVREJWJ35YSEEDDRMZQ2LM2H2WE6/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y46FOVJUS5SO44A2VEKR7DXEHTI4WK5L/
• https://security.gentoo.org/glsa/202007-06
• https://sourceforge.net/p/hylafax/HylaFAX+/2534/
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00039.html
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00040.html
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00046.html

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