Improper Input Validation Affecting pcre package, versions *
Snyk CVSS
Attack Complexity
Low
Availability
High
Threat Intelligence
EPSS
4.25% (93rd
percentile)
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Test your applications- Snyk ID SNYK-CENTOS7-PCRE-1982295
- published 26 Jul 2021
- disclosed 23 Feb 2017
Introduced: 23 Feb 2017
CVE-2017-7186 Open this link in a new tabHow to fix?
There is no fixed version for Centos:7 pcre.
NVD Description
Note: Versions mentioned in the description apply only to the upstream pcre package and not the pcre package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
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.
References
- http://www.securityfocus.com/bid/97030
- https://bugs.exim.org/show_bug.cgi?id=2052
- 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/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://access.redhat.com/security/cve/CVE-2017-7186
- https://security.gentoo.org/glsa/201710-09
- https://security.gentoo.org/glsa/201710-25
- https://blogs.gentoo.org/ago/2017/03/14/libpcre-invalid-memory-read-in-match-pcre_exec-c/
- https://access.redhat.com/errata/RHSA-2018:2486