https://bugzilla.suse.com/show_bug.cgi?id=1191231 Bug ID: 1191231 Summary: VUL-1: CVE-2021-39246: tor: allows a correlation attack excessive verbose logging Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.3 Hardware: Other URL: https://smash.suse.de/issue/310844/ OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Security Assignee: bwiedemann@suse.com Reporter: gabriele.sonnu@suse.com QA Contact: security-team@suse.de Found By: Security Response Team Blocker: --- 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. If --log or --verbose is used, 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). References: https://sick.codes/sick-2021-111 https://www.privacyaffairs.com/cve-2021-39246-tor-vulnerability https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-111.m... Upstream patch: https://gitlab.torproject.org/tpo/core/tor/-/merge_requests/434 https://gitlab.torproject.org/tpo/core/tor/-/commit/80c404c4b79f3bcba3fc4585... References: https://bugzilla.redhat.com/show_bug.cgi?id=2008652 http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-39246 https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-111.m... http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39246 https://gitlab.torproject.org/tpo/core/tor/-/merge_requests/434 https://sick.codes/sick-2021-111 https://gitlab.torproject.org/tpo/core/tor/-/commit/80c404c4b79f3bcba3fc4585... https://www.privacyaffairs.com/cve-2021-39246-tor-vulnerability -- You are receiving this mail because: You are on the CC list for the bug.