Vulnerability identifier: #VU12437

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1172

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Squid
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Squid-cache.org

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to incorrect pointer handling. A remote attacker can cause the service to crash when processing ESI responses.

Mitigation
Update to version 4.0.13.

Vulnerable software versions

Squid: 3.1.12.2 - 3.5.27, 4.0 - 4.0.12

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External links
http://www.squid-cache.org/Advisories/SQUID-2018_3.txt

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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