pcre: Invalid Unicode property lookup (8.41/7, 10.24/2)
Published Mar 20, 2017
7.5
HIGHCVSS 3.0
EPSS 5.03%
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.
Affected products
No data.
No data.
Red Hat JBoss Core Services
httpd
Fixed · RHSA-2018:2486
Red Hat Directory Server 8
pcre
Not affected
Red Hat Enterprise Linux 5
pcre
Not affected
Red Hat Enterprise Linux 6
glib2
Not affected
Red Hat Enterprise Linux 6
pcre
Not affected
Red Hat Enterprise Linux 7
glib2
Not affected
Red Hat Enterprise Linux 7
pcre
Will not fix
Red Hat Enterprise Linux 7
pcre2
Not affected
Red Hat Enterprise Linux 7
virtuoso-opensource
Not affected
Red Hat JBoss Enterprise Web Server 1
httpd
Will not fix
Red Hat JBoss Enterprise Web Server 2
httpd
Will not fix
Red Hat JBoss Enterprise Web Server 3
httpd
Will not fix
Red Hat JBoss Web Server 3
pcre
Not affected
Red Hat Software Collections
rh-mariadb100-mariadb
Not affected
Red Hat Software Collections
rh-mariadb101-mariadb
Not affected
Red Hat Software Collections
rh-php56-php
Not affected
Red Hat Software Collections
rh-php70-php
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat JBoss Core Services | httpd | Fixed | RHSA-2018:2486 |
| Red Hat Directory Server 8 | pcre | Not affected | n/a |
| Red Hat Enterprise Linux 5 | pcre | Not affected | n/a |
| Red Hat Enterprise Linux 6 | glib2 | Not affected | n/a |
| Red Hat Enterprise Linux 6 | pcre | Not affected | n/a |
| Red Hat Enterprise Linux 7 | glib2 | Not affected | n/a |
| Red Hat Enterprise Linux 7 | pcre | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | pcre2 | Not affected | n/a |
| Red Hat Enterprise Linux 7 | virtuoso-opensource | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 1 | httpd | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 2 | httpd | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 3 | httpd | Will not fix | n/a |
| Red Hat JBoss Web Server 3 | pcre | Not affected | n/a |
| Red Hat Software Collections | rh-mariadb100-mariadb | Not affected | n/a |
| Red Hat Software Collections | rh-mariadb101-mariadb | Not affected | n/a |
| Red Hat Software Collections | rh-php56-php | Not affected | n/a |
| Red Hat Software Collections | rh-php70-php | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.03% (0.05033) | 92.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.03% (0.05033) | 91.13th | v5 (v2026.06.15) |
| Mar 17, 2026 | 7.10% (0.07102) | 91.42th | v4 (v2025.03.14) |
| May 18, 2025 | 4.97% (0.04966) | 89.11th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.72% (0.03719) | 86.87th | v4 (v2025.03.14) |
| Mar 29, 2025 | 18.58% (0.18576) | 92.19th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.72% (0.03719) | 87.18th | v4 (v2025.03.14) |
| Dec 12, 2024 | 4.78% (0.04776) | 93.00th | v3 (v2023.03.01) |
| Jun 20, 2024 | 4.78% (0.04776) | 92.74th | v3 (v2023.03.01) |
| Apr 1, 2024 | 4.25% (0.04250) | 92.08th | v3 (v2023.03.01) |
| Feb 21, 2024 | 3.64% (0.03641) | 91.39th | v3 (v2023.03.01) |
| Jan 8, 2024 | 3.43% (0.03427) | 90.51th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.07% (0.03074) | 89.47th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.52% (0.03521) | 68.37th | v1 |
| Jan 6, 2022 | 3.52% (0.03521) | 68.07th | v1 |
| Sep 1, 2021 | 3.52% (0.03521) | 82.02th | v1 |
| Apr 14, 2021 | 3.52% (0.03521) | 0.00th | v1 |
References (14)
- http://www.securityfocus.com/bid/97030 vdb-entryx_refsource_BID
- https://access.redhat.com/errata/RHSA-2018:2486 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-7186 Vendor Advisory
- https://blogs.gentoo.org/ago/2017/03/14/libpcre-invalid-memory-read-in-match-pcre_exec-c/ x_refsource_MISCPatchThird Party Advisory
- https://bugs.exim.org/show_bug.cgi?id=2052 x_refsource_CONFIRMThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1434504 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-7186
- https://security.gentoo.org/glsa/201710-09 vendor-advisoryx_refsource_GENTOO
- https://security.gentoo.org/glsa/201710-25 vendor-advisoryx_refsource_GENTOO
- https://vcs.pcre.org/pcre/code/trunk/pcre_internal.h?r1=1649&r2=1688&sortby=date x_refsource_CONFIRMPatch
- https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=date x_refsource_CONFIRMPatch
- https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?r1=600&r2=670&sortby=date x_refsource_CONFIRMPatch
- https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?r1=316&r2=670&sortby=date x_refsource_CONFIRMPatch
- https://www.cve.org/CVERecord?id=CVE-2017-7186
Change history (0)
No recorded changes yet.