| Name | CVE-2021-23192 |
| Description | A flaw was found in the way samba implemented DCE/RPC. If a client to a Samba server sent a very large DCE/RPC request, and chose to fragment it, an attacker could replace later fragments with their own data, bypassing the signature requirements. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-5003-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| samba (PTS) | buster | 2:4.9.5+dfsg-5+deb10u3 | fixed |
| buster (security) | 2:4.9.5+dfsg-5+deb10u4 | fixed |
| bullseye (security), bullseye | 2:4.13.13+dfsg-1~deb11u5 | fixed |
| bookworm | 2:4.17.9+dfsg-0+deb12u3 | fixed |
| bookworm (security) | 2:4.17.10+dfsg-0+deb12u1 | fixed |
| sid, trixie | 2:4.19.0+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| samba | source | stretch | (not affected) | | | |
| samba | source | buster | (not affected) | | | |
| samba | source | bullseye | 2:4.13.13+dfsg-1~deb11u2 | | DSA-5003-1 | |
| samba | source | (unstable) | 2:4.13.14+dfsg-1 | | | |
Notes
[buster] - samba <not-affected> (Vulnerable code introduced later)
[stretch] - samba <not-affected> (Vulnerable code introduced later)
https://bugzilla.samba.org/show_bug.cgi?id=14875
https://www.samba.org/samba/security/CVE-2021-23192.html