CVE-2024-0853

Public Exploit
OCSP verification bypass with TLS session reuse

Description

curl inadvertently kept the SSL session ID for connections in its cache even when the verify status (*OCSP stapling*) test failed. A subsequent transfer to the same hostname could then succeed if the session ID cache was still fresh, which then skipped the verify status check.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.16%
Vendor Advisory curl.se Vendor Advisory curl.se
Affected: curl curl
Published at:
Updated at:

References

Link Tags
https://curl.se/docs/CVE-2024-0853.json vendor advisory
https://curl.se/docs/CVE-2024-0853.html vendor advisory
https://hackerone.com/reports/2298922 issue tracking exploit
https://security.netapp.com/advisory/ntap-20240307-0004/
https://security.netapp.com/advisory/ntap-20240426-0009/
https://security.netapp.com/advisory/ntap-20240503-0012/

Frequently Asked Questions

What is the severity of CVE-2024-0853?
CVE-2024-0853 has been scored as a medium severity vulnerability.
How to fix CVE-2024-0853?
To fix CVE-2024-0853, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-0853 being actively exploited in the wild?
It is possible that CVE-2024-0853 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-0853?
CVE-2024-0853 affects curl curl.
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