cve-2024-6197
Vulnerability from cvelistv5
Published
2024-07-24 07:29
Modified
2025-02-13 17:54
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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
2499f714-1537-4658-8207-48ae4bb9eae9http://www.openwall.com/lists/oss-security/2024/07/24/1Mailing List, Third Party Advisory
2499f714-1537-4658-8207-48ae4bb9eae9http://www.openwall.com/lists/oss-security/2024/07/24/5Mailing List, Third Party Advisory
2499f714-1537-4658-8207-48ae4bb9eae9https://curl.se/docs/CVE-2024-6197.htmlVendor Advisory
2499f714-1537-4658-8207-48ae4bb9eae9https://curl.se/docs/CVE-2024-6197.jsonVendor Advisory
2499f714-1537-4658-8207-48ae4bb9eae9https://hackerone.com/reports/2559516Exploit, Issue Tracking, Technical Description
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/07/24/1Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/07/24/5Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://curl.se/docs/CVE-2024-6197.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://curl.se/docs/CVE-2024-6197.jsonVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/2559516Exploit, Issue Tracking, Technical Description
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20241129-0008/
Impacted products
Vendor Product Version
curl curl Version: 8.8.0   ≤ 8.8.0
Version: 8.7.1   ≤ 8.7.1
Version: 8.7.0   ≤ 8.7.0
Version: 8.6.0   ≤ 8.6.0
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