CVE-2018-1172 — MEDIUM (5.9)

Vulnerability Description

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.

CVSS Score

5.9

MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Squid-Cache	Squid	3.5.27

Related Weaknesses (CWE)

CWE-476

References

http://www.squid-cache.org/Advisories/SQUID-2018_3.txtVendor Advisory
https://zerodayinitiative.com/advisories/ZDI-18-309Third Party AdvisoryVDB Entry
http://www.squid-cache.org/Advisories/SQUID-2018_3.txtVendor Advisory
https://zerodayinitiative.com/advisories/ZDI-18-309Third Party AdvisoryVDB Entry

FAQ

What is CVE-2018-1172?

CVE-2018-1172 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 vulnerabil...

How severe is CVE-2018-1172?

CVE-2018-1172 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-1172?

Check the references section above for vendor advisories and patch information. Affected products include: Squid-Cache Squid.