CVE-2017-8823

HighCVSS 8.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.0 8.1/10CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
n/a	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	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

References

https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516Vendor Advisory
https://bugs.torproject.org/24313Issue Tracking, Vendor Advisory
https://bugs.torproject.org/24430Vendor Advisory
https://www.debian.org/security/2017/dsa-4054Third Party Advisory
https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516Vendor Advisory
https://bugs.torproject.org/24313Issue Tracking, Vendor Advisory
https://bugs.torproject.org/24430Vendor Advisory
https://www.debian.org/security/2017/dsa-4054Third Party Advisory

Timeline

Published: Dec 3, 2017
Last modified: Jun 17, 2026
NVD status: Modified

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