Is CVE-2018-1172 in the CISA KEV catalog?

No. CVE-2018-1172 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-1172?

CVE-2018-1172 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2018-1172?

CVE-2018-1172 has an EPSS score of 8.94% (95th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-1172?

Upgrade squid on debian 11 to 4.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2018-1172

MEDIUMEPSS 95th pctl

5.9

CVSS v3

NVD

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.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

squidDebian

Fixed in:4.1-1CVE-2018-1172

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

8.94%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Vendor Advisory1

squid-cache.org

Third-Party Advisory1

zerodayinitiative.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.