CVE-2017-8823

high

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.

References

https://www.debian.org/security/2017/dsa-4054

https://bugs.torproject.org/24430

https://bugs.torproject.org/24313

https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516

Details

Source: Mitre, NVD

Published: 2017-12-03

Updated: 2017-12-21

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.1

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

Severity: High