Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close


Published: 3 September 2017

The DecodeNumber function in unrarlib.c in unrar 0.0.1 (aka unrar-free or unrar-gpl) suffers from a NULL pointer dereference flaw triggered by a crafted RAR archive. NOTE: this may be the same as one of the several test cases in the CVE-2017-11189 references.

From the Ubuntu Security Team

It was discovered that UnRAR mishandled specially crafted RAR archives. An attacker could use this vulnerability to cause a denial of service (crash)



Cvss 3 Severity Score


Score breakdown


Package Release Status
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
cosmic Not vulnerable
disco Not vulnerable
Released (1:0.0.1+cvs20071127-2+deb7u1ubuntu0.1~esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
Released (1:0.0.1+cvs20140707-4)
Released (1:0.0.1+cvs20140707-4~build0.16.04.1)
zesty Ignored
(end of life)

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:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H