CVE-2018-1000654: GNU LIBTASN1

Medium severity, CVSS 5.5. EPSS: 2% chance of exploitation in the next 30 days.

GNU Libtasn1-4.13 libtasn1-4.13 version libtasn1-4.13, libtasn1-4.12 contains a DoS, specifically CPU usage will reach 100% when running asn1Paser against the POC due to an issue in _asn1_expand_object_id(p_tree), after a long time, the program will be killed. This attack appears to be exploitable via parsing a crafted file.

Affected products

• GNU LIBTASN1: version 4.12 only; version 4.13 only

Published 2018-08-20. Last modified 2026-06-17.