CVE-2020-15396: In HylaFAX+ through 7.0.2 and HylaFAX Enterprise, the faxsetup utility calls chown on files in user-owned directories

High severity · published Jun 30, 2020

CVE-2020-15396

In HylaFAX+ through 7.0.2 and HylaFAX Enterprise, the faxsetup utility calls chown on files in user-owned directories

7.8

CVSS

0.4%

EPSS

On KEV

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack vector

Local

Complexity

Low

Privileges

Low

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.4% · higher than 33% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Backports Sle · Opensuse

15.0; 15.0 · source: NVD

Fedora · Fedoraproject

31; 32 · source: NVD

Hylafax Enterprise · Ifax

All versions, or not specified · source: NVD

Hylafax+ · Hylafax+ Project

through 7.0.2 · source: NVD

Leap · Opensuse

15.1; 15.2 · source: NVD

Affected product

Fedora

Fedoraproject

All Fedora CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-15396

CVE.org

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

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00039.html

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00040.html

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00046.html

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00054.html

Exploit

https://bugzilla.suse.com/show_bug.cgi?id=1173521

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J52QFVREJWJ35YSEEDDRMZQ2LM2H2WE6/