php: buffer over-read in finish_nested_data function
Published Aug 18, 2017
9.8
CRITICALCVSS 3.0
EPSS 6.94%
Description
The finish_nested_data function in ext/standard/var_unserializer.re in PHP before 5.6.31, 7.0.x before 7.0.21, and 7.1.x before 7.1.7 is prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue can have an unspecified impact on the integrity of PHP.
Affected products
No data.
- ≤ 5.6.30
- 7.0.0
- 7.0.1
- 7.0.2
- 7.0.3
- 7.0.4
- 7.0.5
- 7.0.6
- 7.0.7
- 7.0.8
- 7.0.9
- 7.0.10
- 7.0.11
- 7.0.12
- 7.0.13
- 7.0.14
- 7.0.15
- 7.0.16
- 7.0.17
- 7.0.18
- 7.0.19
- 7.0.20
- 7.1.0
- 7.1.1
- 7.1.2
- 7.1.3
- 7.1.4
- 7.1.5
- 7.1.6
No data.
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-php70-php-0:7.0.27-1.el6
Fixed · RHSA-2018:1296
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
rh-php70-php-0:7.0.27-1.el6
Fixed · RHSA-2018:1296
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-php70-php-0:7.0.27-1.el7
Fixed · RHSA-2018:1296
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS
rh-php70-php-0:7.0.27-1.el7
Fixed · RHSA-2018:1296
Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS
rh-php70-php-0:7.0.27-1.el7
Fixed · RHSA-2018:1296
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS
rh-php70-php-0:7.0.27-1.el7
Fixed · RHSA-2018:1296
Red Hat Enterprise Linux 5
php
Will not fix
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
rh-php56-php
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-php70-php-0:7.0.27-1.el6 | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | rh-php70-php-0:7.0.27-1.el6 | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-php70-php-0:7.0.27-1.el7 | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | rh-php70-php-0:7.0.27-1.el7 | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | rh-php70-php-0:7.0.27-1.el7 | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | rh-php70-php-0:7.0.27-1.el7 | Fixed | RHSA-2018:1296 |
| 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 | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | php | Will not fix | n/a |
| Red Hat Software Collections | rh-php56-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:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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
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 (57 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.94% (0.06940) | 93.91th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.94% (0.06940) | 93.27th | v5 (v2026.06.15) |
| May 9, 2026 | 13.03% (0.13030) | 94.14th | v4 (v2025.03.14) |
| Apr 18, 2026 | 16.85% (0.16846) | 94.97th | v4 (v2025.03.14) |
| Apr 8, 2026 | 20.54% (0.20540) | 95.56th | v4 (v2025.03.14) |
| Mar 4, 2026 | 16.71% (0.16709) | 94.81th | v4 (v2025.03.14) |
| Mar 1, 2026 | 3.03% (0.03033) | 86.47th | v4 (v2025.03.14) |
| Feb 4, 2026 | 16.71% (0.16709) | 94.75th | v4 (v2025.03.14) |
| Feb 1, 2026 | 3.03% (0.03033) | 86.36th | v4 (v2025.03.14) |
| Jan 4, 2026 | 16.71% (0.16709) | 94.72th | v4 (v2025.03.14) |
| Jan 1, 2026 | 3.03% (0.03033) | 86.30th | v4 (v2025.03.14) |
| Dec 28, 2025 | 16.71% (0.16709) | 94.72th | v4 (v2025.03.14) |
| Dec 27, 2025 | 13.53% (0.13531) | 94.03th | v4 (v2025.03.14) |
| Dec 4, 2025 | 17.08% (0.17077) | 94.73th | v4 (v2025.03.14) |
| Dec 1, 2025 | 3.12% (0.03115) | 86.43th | v4 (v2025.03.14) |
| Nov 28, 2025 | 17.08% (0.17077) | 94.73th | v4 (v2025.03.14) |
| Nov 23, 2025 | 22.51% (0.22509) | 95.60th | v4 (v2025.03.14) |
| Nov 4, 2025 | 16.71% (0.16709) | 94.66th | v4 (v2025.03.14) |
| Nov 1, 2025 | 3.03% (0.03033) | 86.20th | v4 (v2025.03.14) |
| Oct 28, 2025 | 16.71% (0.16709) | 94.64th | v4 (v2025.03.14) |
| Oct 27, 2025 | 13.53% (0.13531) | 93.95th | v4 (v2025.03.14) |
| Oct 4, 2025 | 16.71% (0.16709) | 94.68th | v4 (v2025.03.14) |
| Oct 1, 2025 | 3.03% (0.03033) | 86.21th | v4 (v2025.03.14) |
| Sep 4, 2025 | 13.53% (0.13531) | 93.98th | v4 (v2025.03.14) |
| Sep 1, 2025 | 2.83% (0.02830) | 85.72th | v4 (v2025.03.14) |
| Aug 19, 2025 | 13.53% (0.13531) | 93.94th | v4 (v2025.03.14) |
| Aug 6, 2025 | 16.74% (0.16743) | 94.65th | v4 (v2025.03.14) |
| Aug 1, 2025 | 3.87% (0.03869) | 87.88th | v4 (v2025.03.14) |
| Jul 30, 2025 | 16.74% (0.16743) | 94.65th | v4 (v2025.03.14) |
| Jul 5, 2025 | 20.46% (0.20457) | 95.26th | v4 (v2025.03.14) |
| Jul 1, 2025 | 4.14% (0.04143) | 88.21th | v4 (v2025.03.14) |
| Jun 21, 2025 | 20.46% (0.20457) | 95.23th | v4 (v2025.03.14) |
| Jun 5, 2025 | 12.21% (0.12211) | 93.46th | v4 (v2025.03.14) |
| Jun 1, 2025 | 2.81% (0.02813) | 85.50th | v4 (v2025.03.14) |
| May 30, 2025 | 12.21% (0.12211) | 93.46th | v4 (v2025.03.14) |
| May 21, 2025 | 18.71% (0.18707) | 94.93th | v4 (v2025.03.14) |
| May 20, 2025 | 3.17% (0.03169) | 86.30th | v4 (v2025.03.14) |
| May 4, 2025 | 18.71% (0.18707) | 94.90th | v4 (v2025.03.14) |
| May 1, 2025 | 3.17% (0.03169) | 86.27th | v4 (v2025.03.14) |
| Apr 12, 2025 | 18.71% (0.18707) | 94.79th | v4 (v2025.03.14) |
| Apr 10, 2025 | 3.17% (0.03169) | 85.85th | v4 (v2025.03.14) |
| Mar 30, 2025 | 18.71% (0.18707) | 94.77th | v4 (v2025.03.14) |
| Mar 29, 2025 | 31.85% (0.31848) | 94.98th | v4 (v2025.03.14) |
| Mar 24, 2025 | 18.71% (0.18707) | 94.75th | v4 (v2025.03.14) |
| Mar 23, 2025 | 3.17% (0.03169) | 84.52th | v4 (v2025.03.14) |
| Mar 17, 2025 | 18.71% (0.18707) | 94.79th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.06% (0.01058) | 84.74th | v3 (v2023.03.01) |
| Apr 16, 2024 | 1.06% (0.01058) | 83.88th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.06% (0.01060) | 81.87th | 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) |
| Feb 3, 2022 | 2.07% (0.02069) | 50.36th | v1 |
| Jan 6, 2022 | 2.07% (0.02069) | 49.86th | v1 |
| Sep 1, 2021 | 2.07% (0.02069) | 77.27th | v1 |
| Apr 14, 2021 | 2.07% (0.02069) | 0.00th | v1 |
References (13)
- http://php.net/ChangeLog-5.php x_refsource_CONFIRMRelease NotesVendor Advisory
- http://php.net/ChangeLog-7.php x_refsource_CONFIRMRelease NotesVendor Advisory
- http://www.securityfocus.com/bid/99490 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:1296 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-12933 Vendor Advisory
- https://bugs.php.net/bug.php?id=74111 x_refsource_CONFIRMVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1484838 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-12933
- https://usn.ubuntu.com/3566-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3566-2/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2017-12933
- https://www.debian.org/security/2018/dsa-4080 vendor-advisoryx_refsource_DEBIAN
- https://www.debian.org/security/2018/dsa-4081 vendor-advisoryx_refsource_DEBIAN
| Link | Providers | Tags |
|---|---|---|
| http://php.net/ChangeLog-5.php | x_refsource_CONFIRMRelease NotesVendor Advisory | |
| http://php.net/ChangeLog-7.php | x_refsource_CONFIRMRelease NotesVendor Advisory | |
| http://www.securityfocus.com/bid/99490 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/errata/RHSA-2018:1296 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2017-12933 | Vendor Advisory | |
| https://bugs.php.net/bug.php?id=74111 | x_refsource_CONFIRMVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1484838 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-12933 | ||
| https://usn.ubuntu.com/3566-1/ | vendor-advisoryx_refsource_UBUNTU | |
| https://usn.ubuntu.com/3566-2/ | vendor-advisoryx_refsource_UBUNTU | |
| https://www.cve.org/CVERecord?id=CVE-2017-12933 | ||
| https://www.debian.org/security/2018/dsa-4080 | vendor-advisoryx_refsource_DEBIAN | |
| https://www.debian.org/security/2018/dsa-4081 | vendor-advisoryx_refsource_DEBIAN |
Change history (0)
No recorded changes yet.