CVE-2017-7186: Buffer Overflow
First published: Mon Mar 20 2017(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/pcre | <8.41 | 8.41 |
| redhat/pcre2 | <10.24 | 10.24 |
| pcre pcre | =8.40 | |
| PCRE2 (Perl Compatible Regular Expressions) | =10.23 |
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Reference Links
- http://www.securityfocus.com/bid/97030
- https://access.redhat.com/errata/RHSA-2018:2486
- https://blogs.gentoo.org/ago/2017/03/14/libpcre-invalid-memory-read-in-match-pcre_exec-c/
- https://bugs.exim.org/show_bug.cgi?id=2052
- https://security.gentoo.org/glsa/201710-09
- https://security.gentoo.org/glsa/201710-25
- https://vcs.pcre.org/pcre/code/trunk/pcre_internal.h?r1=1649&r2=1688&sortby=date
- https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=date
- https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?r1=600&r2=670&sortby=date
- https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?r1=316&r2=670&sortby=date
- https://vcs.pcre.org/pcre?view=revision&revision=1688
- https://vcs.pcre.org/pcre2?view=revision&revision=670
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1434517
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1434515
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1434514
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1434516
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1434513
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1434511
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1434512
- https://access.redhat.com/security/updates/classification/
- https://bugzilla.redhat.com/show_bug.cgi?id=1434504
Frequently Asked Questions
What is the severity of CVE-2017-7186?
CVE-2017-7186 is considered to have a high severity due to its potential to cause denial of service through application crashes.
How do I fix CVE-2017-7186?
To fix CVE-2017-7186, upgrade to PCRE version 8.41 or PCRE2 version 10.24.
Who is affected by CVE-2017-7186?
CVE-2017-7186 affects users of PCRE version 8.40 and PCRE2 version 10.23.
What is the impact of CVE-2017-7186?
The impact of CVE-2017-7186 includes application crashes due to invalid Unicode property lookups.
Can CVE-2017-7186 be exploited remotely?
Yes, CVE-2017-7186 can be exploited remotely, leading to denial of service.
- agent/type
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2017-7186
- agent/software-canonical-lookup
- agent/remedy
- agent/weakness
- agent/references
- agent/author
- agent/severity
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- package-manager/redhat
- vendor/pcre
- canonical/pcre pcre
- version/pcre pcre/8.40
- canonical/pcre2 (perl compatible regular expressions)
- version/pcre2 (perl compatible regular expressions)/10.23