CVE-2018-1172

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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 18.68% Top 10%
Vendor Advisory squid-cache.org
Affected: The Squid Software Foundation The Squid Software Foundation Squid
Published at:
Updated at:

References

Link Tags
https://zerodayinitiative.com/advisories/ZDI-18-309 third party advisory vdb entry
http://www.squid-cache.org/Advisories/SQUID-2018_3.txt vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-1172?
CVE-2018-1172 has been scored as a medium severity vulnerability.
How to fix CVE-2018-1172?
To fix CVE-2018-1172, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-1172 being actively exploited in the wild?
It is possible that CVE-2018-1172 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~19% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-1172?
CVE-2018-1172 affects The Squid Software Foundation The Squid Software Foundation Squid.
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