Vulnerability identifier: #VU22911

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-3688

CWE-ID: CWE-276

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
SUSE Linux
Operating systems & Components / Operating system

Vendor: SUSE

Description

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

The vulnerability exists due to insecure default permissions (e.g. squid:root, 0750) for the " /usr/sbin/pinger" binary that is shipped  with squid 4.8-5.8.1 and earlier packages for SUSE Linux Enterprise Server 15 and squid version 3.5.21-26.17.1 and earlier for SUSE Linux Enterprise Server 12. A local user can compromise the squid account and elevate privileges on the system by modding the affected binary.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SUSE Linux: 12 - 15

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External links
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
http://bugzilla.suse.com/show_bug.cgi?id=1093414

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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.