Description
The asn1_signature function in asn1.c in Cameron Hamilton-Rich axTLS through 2.1.5 has a Buffer Overflow that allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted certificate in the TLS certificate handshake message, because the result of get_asn1_length() is not checked for a minimum or maximum size.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://axtls.sourceforge.net ↗
- https://www.telekom.com/en/corporate-responsibility/data-protection-data-security/security/details/advisories-504842 ↗
- https://seclists.org/bugtraq/2019/Nov/44 ↗
- http://packetstormsecurity.com/files/155500/axTLS-2.1.5-Denial-Of-Service.html ↗
- https://www.telekom.com/resource/blob/586416/12097aeb8f9a6bba89a804b94575521a/dl-191121-critical-remote-denial-of-service-vulnerability-i--data.pdf ↗