| Name | CVE-2017-7186 |
| Description | libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow remote attackers to cause a denial of service (segmentation violation for read access, and application crash) by triggering an invalid Unicode property lookup. |
| 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 | 858230, 858233 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| pcre2 (PTS) | stretch (lts), stretch | 10.22-3+deb9u1 | fixed |
| buster (security), buster, buster (lts) | 10.32-5+deb10u1 | fixed |
| bullseye | 10.36-2+deb11u1 | fixed |
| bookworm | 10.42-1 | fixed |
| trixie | 10.42-4 | fixed |
| sid | 10.44-4 | fixed |
| pcre3 (PTS) | jessie | 2:8.35-3.3+deb8u4 | vulnerable |
| stretch | 2:8.39-3 | fixed |
| buster | 2:8.39-12 | fixed |
| bullseye | 2:8.39-13 | fixed |
| bookworm | 2:8.39-15 | fixed |
| sid | 2:8.39-15.1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| pcre2 | source | (unstable) | 10.22-3 | | | 858233 |
| pcre3 | source | wheezy | (not affected) | | | |
| pcre3 | source | (unstable) | 2:8.39-3 | | | 858230 |
Notes
[jessie] - pcre3 <no-dsa> (Minor issue; 32bit character support not enabled)
[wheezy] - pcre3 <not-affected> (Vulnerable code not present)
https://bugs.exim.org/show_bug.cgi?id=2052
https://vcs.pcre.org/pcre/code/trunk/pcre_internal.h?r1=1649&r2=1688&sortby=date (for pcre3)
https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=date (for pcre3)
https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?r1=316&r2=670&sortby=date (for pcre2)
https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?r1=600&r2=670&sortby=date (for pcre2)