php: improper nul termination leading to out-of-bounds read in get_icu_value_internal
Published Aug 7, 2016
8.6
HIGHCVSS 3.0
EPSS 5.34%
Description
The get_icu_value_internal function in ext/intl/locale/locale_methods.c in PHP before 5.5.36, 5.6.x before 5.6.22, and 7.x before 7.0.7 does not ensure the presence of a '\0' character, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a crafted locale_get_primary_language call.
Affected products
No data.
- ≤ 5.5.35
- 5.6.0
- 5.6.0
- 5.6.0
- 5.6.0
- 5.6.0
- 5.6.0
- 5.6.0
- 5.6.0
- 5.6.0
- 5.6.1
- 5.6.2
- 5.6.3
- 5.6.4
- 5.6.5
- 5.6.6
- 5.6.7
- 5.6.8
- 5.6.9
- 5.6.10
- 5.6.11
- 5.6.12
- 5.6.13
- 5.6.14
- 5.6.15
- 5.6.16
- 5.6.17
- 5.6.18
- 5.6.19
- 5.6.20
- 5.6.21
- 7.0.0
- 7.0.1
- 7.0.2
- 7.0.3
- 7.0.4
- 7.0.5
- 7.0.6
No data.
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-php56-0:2.3-1.el6
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-php56-php-0:5.6.25-1.el6
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-php56-php-pear-1:1.9.5-4.el6
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
rh-php56-0:2.3-1.el6
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
rh-php56-php-0:5.6.25-1.el6
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
rh-php56-php-pear-1:1.9.5-4.el6
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-php56-0:2.3-1.el7
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-php56-php-0:5.6.25-1.el7
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-php56-php-pear-1:1.9.5-4.el7
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
rh-php56-0:2.3-1.el7
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
rh-php56-php-0:5.6.25-1.el7
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
rh-php56-php-pear-1:1.9.5-4.el7
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS
rh-php56-0:2.3-1.el7
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS
rh-php56-php-0:5.6.25-1.el7
Fixed · RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS
rh-php56-php-pear-1:1.9.5-4.el7
Fixed · RHSA-2016:2750
Red Hat Enterprise Linux 5
php
Not affected
Red Hat Enterprise Linux 5
php53
Will not fix
Red Hat Enterprise Linux 6
php
Will not fix
Red Hat Enterprise Linux 7
php
Will not fix
Red Hat Software Collections
php54-php
Will not fix
Red Hat Software Collections
php55-php
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-php56-0:2.3-1.el6 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-php56-php-0:5.6.25-1.el6 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-php56-php-pear-1:1.9.5-4.el6 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | rh-php56-0:2.3-1.el6 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | rh-php56-php-0:5.6.25-1.el6 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | rh-php56-php-pear-1:1.9.5-4.el6 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-php56-0:2.3-1.el7 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-php56-php-0:5.6.25-1.el7 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-php56-php-pear-1:1.9.5-4.el7 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | rh-php56-0:2.3-1.el7 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | rh-php56-php-0:5.6.25-1.el7 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | rh-php56-php-pear-1:1.9.5-4.el7 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | rh-php56-0:2.3-1.el7 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | rh-php56-php-0:5.6.25-1.el7 | Fixed | RHSA-2016:2750 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | rh-php56-php-pear-1:1.9.5-4.el7 | Fixed | RHSA-2016:2750 |
| Red Hat Enterprise Linux 5 | php | Not affected | n/a |
| Red Hat Enterprise Linux 5 | php53 | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | php | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | php | Will not fix | n/a |
| Red Hat Software Collections | php54-php | Will not fix | n/a |
| Red Hat Software Collections | php55-php | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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:L/I:L/A:H
AV:N/AC:L/Au:N/C:P/I:P/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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.34% (0.05340) | 92.37th | v5 (v2026.06.15) |
| Sep 22, 2026 | 5.49% (0.05487) | 92.42th | v5 (v2026.06.15) |
| Sep 21, 2026 | 6.91% (0.06906) | 93.87th | v5 (v2026.06.15) |
| Sep 6, 2026 | 5.49% (0.05487) | 92.25th | v5 (v2026.06.15) |
| Sep 5, 2026 | 6.91% (0.06906) | 93.72th | v5 (v2026.06.15) |
| Aug 30, 2026 | 5.49% (0.05487) | 92.21th | v5 (v2026.06.15) |
| Aug 28, 2026 | 6.91% (0.06906) | 93.69th | v5 (v2026.06.15) |
| Aug 24, 2026 | 5.49% (0.05487) | 92.16th | v5 (v2026.06.15) |
| Aug 23, 2026 | 6.91% (0.06906) | 93.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.49% (0.05487) | 91.73th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.31% (0.01314) | 78.47th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.40% (0.02396) | 90.28th | v3 (v2023.03.01) |
| Nov 8, 2023 | 2.40% (0.02396) | 88.70th | v3 (v2023.03.01) |
| Jul 11, 2023 | 1.70% (0.01703) | 86.08th | v3 (v2023.03.01) |
| May 29, 2023 | 1.60% (0.01601) | 85.50th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.43% (0.01432) | 84.49th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.97% (0.01974) | 78.97th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.97% (0.01974) | 77.12th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.97% (0.01974) | 56.20th | v2 (v2022.01.01) |
References (13)
- http://php.net/ChangeLog-5.php x_refsource_CONFIRMPatchRelease Notes
- http://php.net/ChangeLog-7.php x_refsource_CONFIRMPatchRelease Notes
- http://rhn.redhat.com/errata/RHSA-2016-2750.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2016/dsa-3602 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2016/05/26/3 mailing-listx_refsource_MLISTRelease Notes
- http://www.securityfocus.com/bid/90946 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2016-5093 Vendor Advisory
- https://bugs.php.net/bug.php?id=72241 x_refsource_CONFIRMExploit
- https://bugzilla.redhat.com/show_bug.cgi?id=1339590 Issue Tracking
- https://github.com/php/php-src/commit/97eff7eb57fc2320c267a949cffd622c38712484?w=1 x_refsource_CONFIRMPatch
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2016-5093
- https://www.cve.org/CVERecord?id=CVE-2016-5093
| Link | Providers | Tags |
|---|---|---|
| http://php.net/ChangeLog-5.php | x_refsource_CONFIRMPatchRelease Notes | |
| http://php.net/ChangeLog-7.php | x_refsource_CONFIRMPatchRelease Notes | |
| http://rhn.redhat.com/errata/RHSA-2016-2750.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.debian.org/security/2016/dsa-3602 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.openwall.com/lists/oss-security/2016/05/26/3 | mailing-listx_refsource_MLISTRelease Notes | |
| http://www.securityfocus.com/bid/90946 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2016-5093 | Vendor Advisory | |
| https://bugs.php.net/bug.php?id=72241 | x_refsource_CONFIRMExploit | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1339590 | Issue Tracking | |
| https://github.com/php/php-src/commit/97eff7eb57fc2320c267a949cffd622c38712484?w=1 | x_refsource_CONFIRMPatch | |
| https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731 | x_refsource_CONFIRM | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-5093 | ||
| https://www.cve.org/CVERecord?id=CVE-2016-5093 |
Change history (0)
No recorded changes yet.