| Name | CVE-2021-31800 |
| Description | Multiple path traversal vulnerabilities exist in smbserver.py in Impacket through 0.9.22. An attacker that connects to a running smbserver instance can list and write to arbitrary files via ../ directory traversal. This could potentially be abused to achieve arbitrary code execution by replacing /etc/shadow or an SSH authorized key. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 988141 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| impacket (PTS) | buster | 0.9.15-5 | vulnerable |
| bullseye | 0.9.22-2 | fixed |
| bookworm | 0.10.0-4 | fixed |
| sid, trixie | 0.11.0-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| impacket | source | (unstable) | 0.9.22-2 | | | 988141 |
Notes
[buster] - impacket <no-dsa> (Minor issue)
[stretch] - impacket <no-dsa> (Minor issue)
https://github.com/SecureAuthCorp/impacket/commit/49c643bf66620646884ed141c94e5fdd85bcdd2f