Free of Memory not on the Heap The advisory has been revoked - it doesn't affect any version of package jbcs-http24-curl (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL9-JBCSHTTP24CURL-7558709
- published25 Jul 2024
- disclosed24 Jul 2024
Introduced: 24 Jul 2024
CVE-2024-6197 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream jbcs-http24-curl package and not the jbcs-http24-curl package as distributed by RHEL.
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.
References
- https://access.redhat.com/security/cve/CVE-2024-6197
- http://www.openwall.com/lists/oss-security/2024/07/24/1
- http://www.openwall.com/lists/oss-security/2024/07/24/5
- https://curl.se/docs/CVE-2024-6197.html
- https://curl.se/docs/CVE-2024-6197.json
- https://hackerone.com/reports/2559516
- https://security.netapp.com/advisory/ntap-20241129-0008/