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
Products affected by CVE-2017-7186
- cpe:2.3:a:pcre:pcre:8.40:*:*:*:*:*:*:*
- cpe:2.3:a:pcre:pcre2:10.23:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-7186
4.78%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 93 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-7186
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
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
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-7186
-
https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=date
[pcre] Diff of /code/trunk/pcre_ucd.cPatch
-
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
-
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
-
https://vcs.pcre.org/pcre/code/trunk/pcre_internal.h?r1=1649&r2=1688&sortby=date
[pcre] Diff of /code/trunk/pcre_internal.hPatch
-
https://bugs.exim.org/show_bug.cgi?id=2052
Bug 2052 – invalid memory read in match (pcre_exec.c)Third Party Advisory
-
https://security.gentoo.org/glsa/201710-25
PCRE: Multiple vulnerabilities (GLSA 201710-25) — Gentoo security
-
https://security.gentoo.org/glsa/201710-09
PCRE2: Multiple vulnerabilities (GLSA 201710-09) — Gentoo security
-
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
-
http://www.securityfocus.com/bid/97030
PCRE CVE-2017-7186 Denial of Service Vulnerability
-
https://access.redhat.com/errata/RHSA-2018:2486
RHSA-2018:2486 - Security Advisory - Red Hat Customer Portal
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