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CVE-2011-4895 · cross-distro fix matrix

CVE-2011-4895: Tor before 0.2.2.34, when configured as a bridge, sets up circuits through a process different from the process used by a client, which makes it easier for remote attackers to enumerate bridges by observing circuit building.

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2011-4895 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • tor→ fixed in0.2.2.34-1urgency: unimportant
    sudo apt-get install --only-upgrade -y tor

Debian bookworm

Source: Debian Security Tracker

  • tor→ fixed in0.2.2.34-1urgency: unimportant
    sudo apt-get install --only-upgrade -y tor

Debian trixie

Source: Debian Security Tracker

  • tor→ fixed in0.2.2.34-1urgency: unimportant
    sudo apt-get install --only-upgrade -y tor
Are YOU affected by CVE-2011-4895?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash
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