| Name | CVE-2020-10593 |
| Description | Tor before 0.3.5.10, 0.4.x before 0.4.1.9, and 0.4.2.x before 0.4.2.7 allows remote attackers to cause a Denial of Service (memory leak), aka TROVE-2020-004. This occurs in circpad_setup_machine_on_circ because a circuit-padding machine can be negotiated twice on the same circuit. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| tor (PTS) | jessie, jessie (lts) | 0.2.5.16-1 | fixed |
| stretch | 0.2.9.16-1 | fixed |
| stretch (security), stretch (lts) | 0.2.9.15-1 | fixed |
| buster (security), buster, buster (lts) | 0.3.5.16-1+deb10u1 | fixed |
| bullseye (security), bullseye | 0.4.5.16-1 | fixed |
| bookworm (security), bookworm | 0.4.7.16-1 | fixed |
| sid, trixie | 0.4.8.13-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| tor | source | wheezy | (unfixed) | end-of-life | | |
| tor | source | jessie | (not affected) | | | |
| tor | source | stretch | (not affected) | | | |
| tor | source | buster | (not affected) | | | |
| tor | source | (unstable) | 0.4.2.7-1 | | | |
Notes
[buster] - tor <not-affected> (Only affects tor 0.4.0.1-alpha onwards)
[stretch] - tor <not-affected> (Only affects tor 0.4.0.1-alpha onwards)
[jessie] - tor <not-affected> (Only affects tor 0.4.0.1-alpha onwards)
https://blog.torproject.org/new-releases-03510-0419-0427
https://bugs.torproject.org/33619