CVE-2024-6197: freeing stack buffer in utf8asn1str
First published: Wed Jul 24 2024(Updated: )
cURL libcurl is vulnerable to a denial of service, caused by a memory allocation flaw in the utf8asn1str() function in the ASN1 parser. By using a specially crafted TLS certificate, a remote attacker could exploit this vulnerability to cause a denial of service condition.
Credit: 2499f714-1537-4658-8207-48ae4bb9eae9
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows 11 | =21H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows Server 2019 | ||
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows 10 | =1809 | |
| Microsoft Windows 11 | =24H2 | |
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 11 | =23H2 | |
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows 10 | =1809 | |
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 11 | =23H2 | |
| Microsoft Windows 11 | =21H2 | |
| Microsoft Windows 11 | =24H2 | |
| Microsoft Windows 10 | =22H2 | |
| Microsoft CBL-Mariner | ||
| Microsoft CBL-Mariner | ||
| Microsoft Windows Server 2022 23H2 | ||
| libcurl | >=8.6.0<8.9.0 | |
| IBM Spectrum Protect | <=8.1.0.0 - 8.1.23.0 |
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Reference Links
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-6197 (Advisory)
- https://www.theregister.com/2024/10/08/patch_tuesday_october_2024/
- https://curl.se/docs/CVE-2024-6197.json
- https://curl.se/docs/CVE-2024-6197.html
- https://hackerone.com/reports/2559516
- http://www.openwall.com/lists/oss-security/2024/07/24/1
- http://www.openwall.com/lists/oss-security/2024/07/24/5
- https://security.netapp.com/advisory/ntap-20241129-0008/
- https://www.ibm.com/support/pages/node/7173465 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2024-6197?
CVE-2024-6197 has a severity rating that classifies it as a denial of service vulnerability.
How do I fix CVE-2024-6197?
To fix CVE-2024-6197, apply the relevant patches or updates provided by your operating system vendor or software provider.
Which software is affected by CVE-2024-6197?
CVE-2024-6197 affects various versions of Microsoft Windows, Windows Server, cURL, and IBM Storage Protect Backup-Archive Client.
Can CVE-2024-6197 be exploited remotely?
Yes, CVE-2024-6197 can be exploited remotely if a specially crafted TLS certificate is used by an attacker.
What impact does CVE-2024-6197 have on systems?
The impact of CVE-2024-6197 includes the potential for a denial of service, rendering affected systems unavailable.
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