Vulnerability Details : CVE-2017-7186
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.
Vulnerability category: OverflowDenial of service
Exploit prediction scoring system (EPSS) score for CVE-2017-7186
Probability of exploitation activity in the next 30 days: 4.25%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 92 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-7186
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2017-7186
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The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-7186
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https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=date
[pcre] Diff of /code/trunk/pcre_ucd.cPatch
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https://blogs.gentoo.org/ago/2017/03/14/libpcre-invalid-memory-read-in-match-pcre_exec-c/
libpcre: invalid memory read in match (pcre_exec.c) | agostino's blogPatch;Third Party Advisory
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https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?r1=316&r2=670&sortby=date
[pcre2] Diff of /code/trunk/src/pcre2_ucd.cPatch
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https://vcs.pcre.org/pcre/code/trunk/pcre_internal.h?r1=1649&r2=1688&sortby=date
[pcre] Diff of /code/trunk/pcre_internal.hPatch
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https://bugs.exim.org/show_bug.cgi?id=2052
Bug 2052 – invalid memory read in match (pcre_exec.c)Third Party Advisory
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https://security.gentoo.org/glsa/201710-25
PCRE: Multiple vulnerabilities (GLSA 201710-25) — Gentoo security
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https://security.gentoo.org/glsa/201710-09
PCRE2: Multiple vulnerabilities (GLSA 201710-09) — Gentoo security
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https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?r1=600&r2=670&sortby=date
[pcre2] Diff of /code/trunk/src/pcre2_internal.hPatch
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http://www.securityfocus.com/bid/97030
PCRE CVE-2017-7186 Denial of Service Vulnerability
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https://access.redhat.com/errata/RHSA-2018:2486
RHSA-2018:2486 - Security Advisory - Red Hat Customer Portal
Products affected by CVE-2017-7186
- cpe:2.3:a:pcre:pcre:8.40:*:*:*:*:*:*:*
- cpe:2.3:a:pcre:pcre2:10.23:*:*:*:*:*:*:*