curl OCSP Stapling fails to reject nonrevoked error statuses
CVE-2024-8096 Published on September 11, 2024
OCSP stapling bypass with GnuTLS
When curl is told to use the Certificate Status Request TLS extension, often referred to as OCSP stapling, to verify that the server certificate is valid, it might fail to detect some OCSP problems and instead wrongly consider the response as fine. If the returned status reports another error than 'revoked' (like for example 'unauthorized') it is not treated as a bad certficate.
Vulnerability Analysis
CVE-2024-8096 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
Improper Certificate Validation
The software does not validate, or incorrectly validates, a certificate. When a certificate is invalid or malicious, it might allow an attacker to spoof a trusted entity by interfering in the communication path between the host and client. The software might connect to a malicious host while believing it is a trusted host, or the software might be deceived into accepting spoofed data that appears to originate from a trusted host.
Products Associated with CVE-2024-8096
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Affected Versions
curl:- Version 8.9.1, <= 8.9.1 is affected.
- Version 8.9.0, <= 8.9.0 is affected.
- Version 8.8.0, <= 8.8.0 is affected.
- Version 8.7.1, <= 8.7.1 is affected.
- Version 8.7.0, <= 8.7.0 is affected.
- Version 8.6.0, <= 8.6.0 is affected.
- Version 8.5.0, <= 8.5.0 is affected.
- Version 8.4.0, <= 8.4.0 is affected.
- Version 8.3.0, <= 8.3.0 is affected.
- Version 8.2.1, <= 8.2.1 is affected.
- Version 8.2.0, <= 8.2.0 is affected.
- Version 8.1.2, <= 8.1.2 is affected.
- Version 8.1.1, <= 8.1.1 is affected.
- Version 8.1.0, <= 8.1.0 is affected.
- Version 8.0.1, <= 8.0.1 is affected.
- Version 8.0.0, <= 8.0.0 is affected.
- Version 7.88.1, <= 7.88.1 is affected.
- Version 7.88.0, <= 7.88.0 is affected.
- Version 7.87.0, <= 7.87.0 is affected.
- Version 7.86.0, <= 7.86.0 is affected.
- Version 7.85.0, <= 7.85.0 is affected.
- Version 7.84.0, <= 7.84.0 is affected.
- Version 7.83.1, <= 7.83.1 is affected.
- Version 7.83.0, <= 7.83.0 is affected.
- Version 7.82.0, <= 7.82.0 is affected.
- Version 7.81.0, <= 7.81.0 is affected.
- Version 7.80.0, <= 7.80.0 is affected.
- Version 7.79.1, <= 7.79.1 is affected.
- Version 7.79.0, <= 7.79.0 is affected.
- Version 7.78.0, <= 7.78.0 is affected.
- Version 7.77.0, <= 7.77.0 is affected.
- Version 7.76.1, <= 7.76.1 is affected.
- Version 7.76.0, <= 7.76.0 is affected.
- Version 7.75.0, <= 7.75.0 is affected.
- Version 7.74.0, <= 7.74.0 is affected.
- Version 7.73.0, <= 7.73.0 is affected.
- Version 7.72.0, <= 7.72.0 is affected.
- Version 7.71.1, <= 7.71.1 is affected.
- Version 7.71.0, <= 7.71.0 is affected.
- Version 7.70.0, <= 7.70.0 is affected.
- Version 7.69.1, <= 7.69.1 is affected.
- Version 7.69.0, <= 7.69.0 is affected.
- Version 7.68.0, <= 7.68.0 is affected.
- Version 7.67.0, <= 7.67.0 is affected.
- Version 7.66.0, <= 7.66.0 is affected.
- Version 7.65.3, <= 7.65.3 is affected.
- Version 7.65.2, <= 7.65.2 is affected.
- Version 7.65.1, <= 7.65.1 is affected.
- Version 7.65.0, <= 7.65.0 is affected.
- Version 7.64.1, <= 7.64.1 is affected.
- Version 7.64.0, <= 7.64.0 is affected.
- Version 7.63.0, <= 7.63.0 is affected.
- Version 7.62.0, <= 7.62.0 is affected.
- Version 7.61.1, <= 7.61.1 is affected.
- Version 7.61.0, <= 7.61.0 is affected.
- Version 7.60.0, <= 7.60.0 is affected.
- Version 7.59.0, <= 7.59.0 is affected.
- Version 7.58.0, <= 7.58.0 is affected.
- Version 7.57.0, <= 7.57.0 is affected.
- Version 7.56.1, <= 7.56.1 is affected.
- Version 7.56.0, <= 7.56.0 is affected.
- Version 7.55.1, <= 7.55.1 is affected.
- Version 7.55.0, <= 7.55.0 is affected.
- Version 7.54.1, <= 7.54.1 is affected.
- Version 7.54.0, <= 7.54.0 is affected.
- Version 7.53.1, <= 7.53.1 is affected.
- Version 7.53.0, <= 7.53.0 is affected.
- Version 7.52.1, <= 7.52.1 is affected.
- Version 7.52.0, <= 7.52.0 is affected.
- Version 7.51.0, <= 7.51.0 is affected.
- Version 7.50.3, <= 7.50.3 is affected.
- Version 7.50.2, <= 7.50.2 is affected.
- Version 7.50.1, <= 7.50.1 is affected.
- Version 7.50.0, <= 7.50.0 is affected.
- Version 7.49.1, <= 7.49.1 is affected.
- Version 7.49.0, <= 7.49.0 is affected.
- Version 7.48.0, <= 7.48.0 is affected.
- Version 7.47.1, <= 7.47.1 is affected.
- Version 7.47.0, <= 7.47.0 is affected.
- Version 7.46.0, <= 7.46.0 is affected.
- Version 7.45.0, <= 7.45.0 is affected.
- Version 7.44.0, <= 7.44.0 is affected.
- Version 7.43.0, <= 7.43.0 is affected.
- Version 7.42.1, <= 7.42.1 is affected.
- Version 7.42.0, <= 7.42.0 is affected.
- Version 7.41.0, <= 7.41.0 is affected.
- Version 7.41.0, <= 8.9.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.