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CVE-2024-6197

7.5 · HIGH

libcurl's ASN1 parser has this utf8asn1str() function used for parsing an ASN.1 UTF-8 string.

Published Jul 24, 2024EPSS 4.30%

Overview

CVE-2024-6197 is a high-severity vulnerability. It was published on July 24, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

libcurl's ASN1 parser has this utf8asn1str() function used for parsing an ASN.1 UTF-8 string. Itcan detect an invalid field and return error. Unfortunately, when doing so it also invokes `free()` on a 4 byte localstack buffer. Most modern malloc implementations detect this error and immediately abort. Some however accept the input pointer and add that memory to its list of available chunks. This leads to the overwriting of nearby stack memory. The content of the overwrite is decided by the `free()` implementation; likely to be memory pointers and a set of flags. The most likely outcome of exploting this flaw is a crash, although it cannot be ruled out that more serious results can be had in special circumstances.

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.openwall.com/lists/oss-security/2024/07/24/1Refwww.openwall.com/lists/oss-security/2024/07/24/5Refcurl.se/docs/CVE-2024-6197.htmlRefcurl.se/docs/CVE-2024-6197.jsonRefhackerone.com/reports/2559516Refwww.openwall.com/lists/oss-security/2024/07/24/1Refwww.openwall.com/lists/oss-security/2024/07/24/5Refcurl.se/docs/CVE-2024-6197.htmlRefcurl.se/docs/CVE-2024-6197.jsonRefhackerone.com/reports/2559516

How CyberStrike helps

Frequently asked questions

What is CVE-2024-6197?

CVE-2024-6197 is a high-severity vulnerability. It was published on July 24, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-6197?

This vulnerability has a CVSS 3.1 base score of 7.5, 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-2024-6197?

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-2024-6197?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-6197 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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