Vulnerability identifier: #VU32880

Vulnerability risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15397

CWE-ID: CWE-269

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
HylaFAX
Client/Desktop applications / Messaging software

Vendor: Hylafax.org

Description

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

HylaFAX+ through 7.0.2 and HylaFAX Enterprise have 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).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

HylaFAX: 7.0.0 - 7.0.2

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External links
http://bugzilla.suse.com/show_bug.cgi?id=1173519
http://security.gentoo.org/glsa/202007-06
http://sourceforge.net/p/hylafax/HylaFAX+/2534/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.