Weakness · High
CWE-593: Authentication Bypass: OpenSSL CTX Object Modified after SSL Objects are Created
What it is
The product modifies the SSL context after connection creation has begun.
- Severity (our rating)
- High
- Likelihood of exploit
- Not rated by MITRE
- Introduced during
- Implementation
- Exploited in the wild
- No CVE in CISA's catalog
In more detail
If the program modifies the SSL_CTX object after creating SSL objects from it, there is the possibility that older SSL objects created from the original context could all be affected by that change.
What an attacker can do
- Bypass Protection Mechanism (Access Control)
- Read Application Data (Confidentiality)
How to prevent it
Architecture and Design
- Use a language or a library that provides a cryptography framework at a higher level of abstraction.
Implementation
- Most SSL_CTX functions have SSL counterparts that act on SSL-type objects.
- Applications should set up an SSL_CTX completely, before creating SSL objects from it.
H2 Security
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Start freeSource: MITRE Common Weakness Enumeration, CWE version 4.19.1. CWE is a trademark of The MITRE Corporation.