CVE-2024-6197
CVSS v3
7.5
HIGH
Score EPSS
1.2 %
probabilité d’exploitation
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
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.
Détails techniques
- Publiée le
- 2024-07-24
Questions fréquentes
Qu’est-ce que CVE-2024-6197 ?
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.
CVE-2024-6197 est-elle activement exploitée ?
Aucune exploitation active de CVE-2024-6197 n’est confirmée. Le score EPSS est de 1.2 %, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2024-6197 ?
CVE-2024-6197 a un score de base CVSS v3 de 7.5 (gravité HIGH).
CVE-2024-6197 touche-t-elle votre environnement ?
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Autres vulnérabilités 2024 à trier
Classées par probabilité d’exploitation (EPSS).