| Name | CVE-2018-10933 |
| Description | A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1548-1, DSA-4322-1 |
| Debian Bugs | 911149 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libssh (PTS) | buster | 0.8.7-1+deb10u1 | fixed |
| buster (security) | 0.8.7-1+deb10u2 | fixed | |
| bullseye (security), bullseye | 0.9.8-0+deb11u1 | fixed | |
| bookworm, bookworm (security) | 0.10.6-0+deb12u1 | fixed | |
| sid, trixie | 0.10.6-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libssh | source | jessie | 0.6.3-4+deb8u3 | DLA-1548-1 | ||
| libssh | source | stretch | 0.7.3-2+deb9u1 | DSA-4322-1 | ||
| libssh | source | (unstable) | 0.8.4-1 | 911149 |
https://www.libssh.org/2018/10/16/libssh-0-8-4-and-0-7-6-security-and-bugfix-release/
https://bugs.libssh.org/T101
https://www.libssh.org/security/advisories/CVE-2018-10933.txt
POC: https://www.openwall.com/lists/oss-security/2018/10/17/5
https://git.libssh.org/projects/libssh.git/commit/?id=2bddafeb709eacc80ad31fec40479f9b628a8bd7 (master)
https://git.libssh.org/projects/libssh.git/commit/?id=825f4ba96407abe8cebb046a7503fa2bf5de9df6 (master)
https://git.libssh.org/projects/libssh.git/commit/?id=20981bf2296202e95d7919394d4610ae3a876cfa (master)
https://git.libssh.org/projects/libssh.git/commit/?id=5d7414467d6dac100a93df761b06de5cd07fc69a (master)
https://git.libssh.org/projects/libssh.git/commit/?id=459868c4a57d2d11cf7835655a8d1a5cf034ccb4 (master)
https://git.libssh.org/projects/libssh.git/commit/?id=68b0c7a93448123cc0d6a04d3df40d92a3fd0a67 (master)
https://git.libssh.org/projects/libssh.git/commit/?id=75be012b4a14f4550ce6ad3f126e559f44dbde76 (master)
https://git.libssh.org/projects/libssh.git/commit/?id=e1548a71bdac73da084174ab1d6d2713edd93f6e (master)
Fixed in 0.7.6, 0.8.4 upstream