CVE-2021-34549

Name
CVE-2021-34549
Description
An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-005. Hashing is mishandled for certain retrieval of circuit data. Consequently. an attacker can trigger the use of an attacker-chosen circuit ID to cause algorithm inefficiency.
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://gitlab.torproject.org/tpo/core/tor/-/issues/40391
CONFIRM https://blog.torproject.org/node/2041
Third Party Advisory https://security.gentoo.org/glsa/202107-25

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* tor >= None < 0.3.5.15
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* tor >= 0.4.0.0 < 0.4.4.9
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* tor >= 0.4.5.0 < 0.4.5.9
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* tor >= 0.4.6.0 < 0.4.6.5

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
tor edge-community 0.4.5.7-r0 omni <omni+alpine@hack.org> possibly vulnerable
tor edge-community 0.4.2.7-r0 None possibly vulnerable
tor edge-community 0.3.5.8-r0 None possibly vulnerable
tor edge-community 0.3.2.10-r0 None possibly vulnerable
tor edge-community 0.3.0.8-r0 None possibly vulnerable
tor 3.22-community 0.4.5.7-r0 None possibly vulnerable
tor 3.22-community 0.4.2.7-r0 None possibly vulnerable
tor 3.22-community 0.3.5.8-r0 None possibly vulnerable
tor 3.22-community 0.3.2.10-r0 None possibly vulnerable
tor 3.22-community 0.3.0.8-r0 None possibly vulnerable