Use After Free Affecting tor package, versions <0.3.1.9-1
Threat Intelligence
EPSS
0.27% (69th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN10-TOR-370810
- published 3 Dec 2017
- disclosed 3 Dec 2017
Introduced: 3 Dec 2017
CVE-2017-8823 Open this link in a new tabHow to fix?
Upgrade Debian:10 tor to version 0.3.1.9-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream tor package and not the tor package as distributed by Debian.
See How to fix? for Debian:10 relevant fixed versions and status.
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://security-tracker.debian.org/tracker/CVE-2017-8823
- https://www.debian.org/security/2017/dsa-4054
- 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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-8823