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CVE-2023-46724

8.6 · HIGH

Squid is a caching proxy for the Web.

Published Nov 1, 2023CWE-125EPSS 4.05%

Overview

CVE-2023-46724 is a high-severity vulnerability. It was published on November 1, 2023 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug, Squid versions 3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using `--with-openssl` are vulnerable to a Denial of Service attack against SSL Certificate validation. This problem allows a remote server to perform Denial of Service against Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a server certificate chain. This attack is limited to HTTPS and SSL-Bump. This bug is fixed in Squid version 6.4. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. Those who you use a prepackaged version of Squid should refer to the package vendor for availability information on updated packages.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.squid-cache.org/Versions/v5/SQUID-2023_4.patchRefwww.squid-cache.org/Versions/v6/SQUID-2023_4.patchGitHubgithub.com/squid-cache/squid/commit/b70f864940225dfe69f9f653f948e787f99c3810GitHubgithub.com/squid-cache/squid/security/advisories/GHSA-73m6-jm96-c6r3Reflists.fedoraproject.org/archives/list/[email protected]/message/A5QASTMCUSUEW3UOMKHZJB3FTONWSRXS/Reflists.fedoraproject.org/archives/list/[email protected]/message/MEV66D3PAAY6K7TWDT3WZBLCPLASFJDC/Refsecurity.netapp.com/advisory/ntap-20231208-0001/Refwww.squid-cache.org/Versions/v5/SQUID-2023_4.patchRefwww.squid-cache.org/Versions/v6/SQUID-2023_4.patchGitHubgithub.com/squid-cache/squid/commit/b70f864940225dfe69f9f653f948e787f99c3810

How CyberStrike helps

Frequently asked questions

What is CVE-2023-46724?

CVE-2023-46724 is a high-severity vulnerability. It was published on November 1, 2023 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2023-46724?

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-46724?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-46724?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-46724 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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