| Name | CVE-2017-9233 |
| Description | XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DLA-990-1, DSA-3898-1 |
| NVD severity | medium (attack range: remote) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| expat (PTS) | jessie | 2.1.0-6+deb8u4 | fixed |
| jessie (security) | 2.1.0-6+deb8u6 | fixed | |
| stretch | 2.2.0-2+deb9u2 | fixed | |
| stretch (security) | 2.2.0-2+deb9u3 | fixed | |
| buster | 2.2.6-2 | fixed | |
| buster (security) | 2.2.6-2+deb10u1 | fixed | |
| bullseye, sid | 2.2.7-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| expat | source | (unstable) | 2.2.1-1 | medium | ||
| expat | source | jessie | 2.1.0-6+deb8u4 | medium | DSA-3898-1 | |
| expat | source | stretch | 2.2.0-2+deb9u1 | medium | DSA-3898-1 | |
| expat | source | wheezy | 2.1.0-1+deb7u5 | medium | DLA-990-1 |
https://libexpat.github.io/doc/cve-2017-9233/
https://github.com/libexpat/libexpat/commit/c4bf96bb51dd2a1b0e185374362ee136fe2c9d7f