CVE-2017-8823 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516 https://bugs.torproject.org/24313 https://bugs.torproject.org/24430 https://www.debian.org/security/2017/dsa-4054

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.1