php: mysqlnd interface vulnerable to BACKRONYM
Published May 16, 2016
5.9
MEDIUMCVSS 3.0
EPSS 1.73%
Description
ext/mysqlnd/mysqlnd.c in PHP before 5.4.43, 5.5.x before 5.5.27, and 5.6.x before 5.6.11 uses a client SSL option to mean that SSL is optional, which allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack, a related issue to CVE-2015-3152.
Affected products
No data.
Configuration 1
- 5.5.0
- 5.5.0
- 5.5.0
- 5.5.0
- 5.5.0
- 5.5.0
- 5.5.0
- 5.5.0
- 5.5.0
- 5.5.0
- 5.5.0
- 5.5.0
- 5.5.0
- 5.5.1
- 5.5.2
- 5.5.3
- 5.5.4
- 5.5.5
- 5.5.6
- 5.5.7
- 5.5.8
- 5.5.9
- 5.5.10
- 5.5.11
- 5.5.12
- 5.5.13
- 5.5.14
- 5.5.15
- 5.5.16
- 5.5.17
- 5.5.18
- 5.5.19
- 5.5.20
- 5.5.21
- 5.5.22
- 5.5.23
- 5.5.24
- 5.5.25
- 5.5.26
Configuration 2
- 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
No data.
Red Hat Enterprise Linux 5
php
Will not fix
Red Hat Enterprise Linux 5
php53
Will not fix
Red Hat Enterprise Linux 6
php
Not affected
Red Hat Enterprise Linux 7
php
Not affected
Red Hat Software Collections
php54-php
Will not fix
Red Hat Software Collections
php55-php
Will not fix
Red Hat Software Collections
rh-php56-php
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | php | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | php53 | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | php | Not affected | n/a |
| Red Hat Enterprise Linux 7 | php | Not affected | n/a |
| Red Hat Software Collections | php54-php | Will not fix | n/a |
| Red Hat Software Collections | php55-php | Will not fix | n/a |
| Red Hat Software Collections | rh-php56-php | Affected | 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:H/PR:N/UI:N/S:U/C:N/I:H/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.73% (0.01734) | 76.82th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.73% (0.01734) | 74.62th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.66% (0.00659) | 68.70th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.87% (0.01870) | 72.08th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.66% (0.00659) | 69.37th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.47% (0.00471) | 76.43th | v3 (v2023.03.01) |
| Feb 14, 2024 | 0.47% (0.00471) | 74.91th | v3 (v2023.03.01) |
| Oct 27, 2023 | 0.47% (0.00471) | 72.90th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.33% (0.00332) | 66.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (13)
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=97aa752fee61fccdec361279adbfb17a3c60f3f4 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00052.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00056.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00057.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00058.html vendor-advisoryx_refsource_SUSE
- http://php.net/ChangeLog-5.php x_refsource_CONFIRM
- http://www.ubuntu.com/usn/USN-2952-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2952-2 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-8838 Vendor Advisory
- https://bugs.php.net/bug.php?id=69669 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1323749 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-8838
- https://www.cve.org/CVERecord?id=CVE-2015-8838
Change history (0)
No recorded changes yet.