Channel and Path Errors Affecting tor package, versions <0.3.1.9-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN12-TOR-1561874
- published3 Dec 2017
- disclosed3 Dec 2017
Introduced: 3 Dec 2017
CVE-2017-8822 (opens in a new tab)How to fix?
Upgrade Debian:12 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:12 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, relays (that have incompletely downloaded descriptors) can pick themselves in a circuit path, leading to a degradation of anonymity, aka TROVE-2017-012.
References
- https://security-tracker.debian.org/tracker/CVE-2017-8822
- 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/21534
- https://bugs.torproject.org/24333
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-8822