Vulnerability Details CVE-2017-8823
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.007
EPSS Ranking 70.5%
CVSS Severity
CVSS v3 Score 8.1
CVSS v2 Score 6.8
References
- 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
- 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
Products affected by CVE-2017-8823
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cpe:2.3:a:tor_project:tor:*
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cpe:2.3:o:debian:debian_linux:8.0
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cpe:2.3:o:debian:debian_linux:9.0