An error-handling flaw was found in python-ecdsa before version 0.13.3. During signature decoding, malformed DER signatures could raise unexpected exceptions (or no exceptions at all), which could lead to a denial of service.
[PLANNED FOR DEPRECATION. SEE MAINTENANCE NOTES AND CONSIDER CWE-252, CWE-248, OR CWE-1069.] Ignoring exceptions and other error conditions may allow an attacker to induce unexpected behavior unnoticed.
The product does not handle or incorrectly handles an exceptional condition.
Link | Tags |
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https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853 | third party advisory issue tracking |
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3 | release notes |
https://www.debian.org/security/2019/dsa-4588 | vendor advisory |
https://seclists.org/bugtraq/2019/Dec/33 | mailing list |