CVE-2018-1000654

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-08-20 · updated 2026-06-17

Description

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

GnuTLS libtasn1: 4.12, 4.13

References

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00018.html
http://www.securityfocus.com/bid/105151
https://gitlab.com/gnutls/libtasn1/issues/4
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00018.html
http://www.securityfocus.com/bid/105151
https://gitlab.com/gnutls/libtasn1/issues/4
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

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