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CVE-2018-1000654

Published: 20 August 2018

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.

Notes

AuthorNote
mdeslaur
only an issue during at build time, not at runtime. As such,
marking as negigible
leosilva
no upstream fix as of 2018-10-09
rodrigo-zaiden
upstream released a fix on 2019-07.

Priority

Negligible

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
libtasn1-6
Launchpad, Ubuntu, Debian
impish Not vulnerable
(4.16.0-2)
hirsute Ignored
(end of life)
bionic Needs triage

focal Not vulnerable
(4.16.0-2)
groovy Ignored
(end of life)
xenial
Released (4.7-3ubuntu0.16.04.3+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
jammy Not vulnerable
(4.18.0-4)
kinetic Not vulnerable
(4.18.0-4)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
lunar Not vulnerable
(4.18.0-4)
trusty Needs triage

upstream
Released (4.14)
mantic Not vulnerable
(4.18.0-4)
Patches:
upstream: https://gitlab.com/gnutls/libtasn1/-/commit/60a37173dd4df39bbe772895377054be28f256ab
libtasn1-3
Launchpad, Ubuntu, Debian
groovy Does not exist

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

impish Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H