| Name | CVE-2016-7979 |
| Description | Ghostscript before 9.21 might allow remote attackers to bypass the SAFER mode protection mechanism and consequently execute arbitrary code by leveraging type confusion in .initialize_dsc_parser. |
| 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-674-1, DSA-3691-1 |
| NVD severity | high (attack range: remote) |
| Debian Bugs | 839846 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| ghostscript (PTS) | jessie | 9.06~dfsg-2+deb8u7 | fixed |
| jessie (security) | 9.26a~dfsg-0+deb8u4 | fixed | |
| stretch | 9.26a~dfsg-0+deb9u2 | fixed | |
| stretch (security) | 9.26a~dfsg-0+deb9u4 | fixed | |
| buster | 9.27~dfsg-2 | fixed | |
| buster (security) | 9.27~dfsg-2+deb10u1 | fixed | |
| bullseye | 9.27~dfsg-3.1 | fixed | |
| sid | 9.28~~rc1~dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| ghostscript | source | (unstable) | 9.19~dfsg-3.1 | high | 839846 | |
| ghostscript | source | jessie | 9.06~dfsg-2+deb8u3 | high | DSA-3691-1 | |
| ghostscript | source | wheezy | 9.05~dfsg-6.3+deb7u3 | high | DLA-674-1 |
Upstream bug: http://bugs.ghostscript.com/show_bug.cgi?id=697190
Reproducer: http://bugs.ghostscript.com/show_bug.cgi?id=697190#c0
Patch: http://git.ghostscript.com/?p=ghostpdl.git;h=875a0095f37626a721c7ff57d606a0f95af03913
http://www.openwall.com/lists/oss-security/2016/10/05/7
http://www.openwall.com/lists/oss-security/2016/10/05/19