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CVE-2021-39246

Published: Sep 24, 2021

Modified: Aug 4, 2024

PUBLISHED

Description

Tor Browser through 10.5.6 and 11.x through 11.0a4 allows a correlation attack that can compromise the privacy of visits to v2 onion addresses. Exact timestamps of these onion-service visits are logged locally, and an attacker might be able to compare them to timestamp data collected by the destination server (or collected by a rogue site within the Tor network).

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-111.md

x_refsource_MISC

https://sick.codes/sick-2021-111

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https://www.privacyaffairs.com/cve-2021-39246-tor-vulnerability

x_refsource_MISC

https://gitlab.torproject.org/tpo/core/tor/-/commit/80c404c4b79f3bcba3fc4585d4c62a62a04f3ed9

x_refsource_MISC

https://gitlab.torproject.org/tpo/core/tor/-/merge_requests/434

x_refsource_MISC

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