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CVE-2022-43552

5.9 · MEDIUM

A use after free vulnerability exists in curl <7.87.0.

Published Feb 9, 2023CWE-416EPSS 2.71%

Overview

CVE-2022-43552 is a medium-severity vulnerability. It was published on February 9, 2023 and has a CVSS 3.1 base score of 5.9 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.

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

Refseclists.org/fulldisclosure/2023/Mar/17Refhackerone.com/reports/1764858Refsecurity.gentoo.org/glsa/202310-12Refsecurity.netapp.com/advisory/ntap-20230214-0002/Refsupport.apple.com/kb/HT213670Refseclists.org/fulldisclosure/2023/Mar/17Refhackerone.com/reports/1764858Refsecurity.gentoo.org/glsa/202310-12Refsecurity.netapp.com/advisory/ntap-20230214-0002/Refsupport.apple.com/kb/HT213670

How CyberStrike helps

Frequently asked questions

What is CVE-2022-43552?

CVE-2022-43552 is a medium-severity vulnerability. It was published on February 9, 2023 and has a CVSS 3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2022-43552?

This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-43552?

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-2022-43552?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-43552 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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