CVE-2018-1172

Publication date 16 May 2018

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

This vulnerability allows remote attackers to deny service on vulnerable installations of The Squid Software Foundation Squid 3.5.27-20180318. Authentication is not required to exploit this vulnerability. The specific flaw exists within ClientRequestContext::sslBumpAccessCheck(). A crafted request can trigger the dereference of a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition to users of the system. Was ZDI-CAN-6088.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
squid3	18.10 cosmic	Not in release
	18.04 LTS bionic	Not affected
	17.10 artful	Ignored
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release

Notes

mdeslaur

squid3 in Ubuntu is not built with OpenSSL support, so Ubuntu isn't actually vulnerable to this issue.

Severity score breakdown

Parameter	Value
Base score	5.9 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H