Intrusion PreventionOpenSSL.SSL_check_chain.NULL.Pointer.Dereference
Description
This indicates an attack attempt to exploit a Memory Access Error Vulnerability in OpenSSL Project OpenSSL.
This vulnerability is due to incorrect handling of the "signature_algorithms_cert" TLS extension by SSL_check_chain(). Successful exploitation will cause the service to abnormally terminate, leading to a denial-of-service condition.
Affected Products
OpenSSL Project OpenSSL 1.1.1d
OpenSSL Project OpenSSL 1.1.1e
OpenSSL Project OpenSSL 1.1.1f
Impact
Denial of Service: Remote attackers can crash vulnerable systems.
Recommended Actions
Apply the most recent upgrade or patch from the vendor.
https://www.openssl.org/news/secadv/20200421.txt
Coverage
| IPS (Regular DB) | |
| IPS (Extended DB) |
Version Updates
| ID | 48954 |
| Created | May 06, 2020 |
| Updated | Sep 08, 2021 |
| CVE ID | |
| Risk |
|
| Exploit Prediction Score | 67.31% |
| Default Action | drop |
| Active | |
| Affected OS | Windows, Linux, BSD, Solaris, MacOS |
| Affected App | Other |
| Profile Type | Buffer Errors |