CVE-2017-8823

Publication date 3 December 2017

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

8.1 · High

Score breakdown

In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, there is a use-after-free in onion service v2 during intro-point expiration because the expiring list is mismanaged in certain error cases, aka TROVE-2017-013.

Status

Package Ubuntu Release Status
tor 18.10 cosmic
Not affected
18.04 LTS bionic
Not affected
17.10 artful
Fixed 0.3.0.13-0ubuntu1~17.10.2
17.04 zesty Ignored end of life
16.04 LTS xenial
Fixed 0.2.9.14-1ubuntu1~16.04.2
14.04 LTS trusty
Not affected

Severity score breakdown

Parameter Value
Base score 8.1 · High
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H