| Name | CVE-2017-13721 |
| Description | In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4000-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| xorg-server (PTS) | bullseye | 2:1.20.11-1+deb11u13 | fixed |
| bullseye (security) | 2:1.20.11-1+deb11u16 | fixed | |
| bookworm | 2:21.1.7-3+deb12u10 | fixed | |
| bookworm (security) | 2:21.1.7-3+deb12u11 | fixed | |
| trixie | 2:21.1.16-1.3 | fixed | |
| trixie (security) | 2:21.1.16-1.3+deb13u1 | fixed | |
| forky, sid | 2:21.1.18-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| xorg-server | source | wheezy | (not affected) | |||
| xorg-server | source | jessie | 2:1.16.4-1+deb8u2 | DSA-4000-1 | ||
| xorg-server | source | stretch | 2:1.19.2-1+deb9u2 | DSA-4000-1 | ||
| xorg-server | source | (unstable) | 2:1.19.4-1 |
[wheezy] - xorg-server <not-affected> (Vulnerable code introduced later)
https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9c003f66a01e1f1