| Name | CVE-2018-20685 |
| Description | In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side. |
| 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-1728-1, DSA-4387-1 |
| Debian Bugs | 919101 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| openssh (PTS) | bullseye (security), bullseye | 1:8.4p1-5+deb11u3 | fixed |
| bookworm | 1:9.2p1-2+deb12u4 | fixed |
| bookworm (security) | 1:9.2p1-2+deb12u3 | fixed |
| sid, trixie | 1:9.9p1-3 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt