HIGH
security flaw
Published Oct 9, 2006
10.0
HIGHCVSS 2.0
EPSS 20.38%
Description
Integer overflow in PHP 5 up to 5.1.6 and 4 before 4.3.0 allows remote attackers to execute arbitrary code via an argument to the unserialize PHP function with a large value for the number of array elements, which triggers the overflow in the Zend Engine ecalloc function (Zend/zend_alloc.c).
Affected products
No data.
OR
- 4.0
- 4.0.1
- 4.0.1
- 4.0.1
- 4.0.2
- 4.0.3
- 4.0.3
- 4.0.4
- 4.0.5
- 4.0.6
- 4.0.7
- 4.0.7
- 4.0.7
- 4.0.7
- 4.1.0
- 4.1.1
- 4.1.2
- 4.2
- 4.2.0
- 4.2.1
- 4.2.2
- 4.2.3
- 5.0
- 5.0
- 5.0
- 5.0.0
- 5.0.1
- 5.0.2
- 5.0.3
- 5.0.4
- 5.0.5
- 5.1.0
- 5.1.1
- 5.1.2
- 5.1.3
- 5.1.4
- 5.1.5
- 5.1.6
No data.
Red Hat Enterprise Linux 2.1
php-0:4.1.2-2.12
Fixed · RHSA-2006:0708
Red Hat Web Application Stack for RHEL 4
php-0:5.1.4-1.el4s1.4
Fixed · RHSA-2006:0688
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 2.1 | php-0:4.1.2-2.12 | Fixed | RHSA-2006:0708 |
| Red Hat Web Application Stack for RHEL 4 | php-0:5.1.4-1.el4s1.4 | Fixed | RHSA-2006:0688 |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch. This issue did not affect the versions of php as shipped with Red Hat Enterprise Linux 3, and 4.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
10.0 HIGH NVD
AV:N/AC:L/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
20.38% 0.20376
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.20376
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 (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 20.38% (0.20376) | 97.42th | v5 (v2026.06.15) |
| Sep 6, 2026 | 20.38% (0.20376) | 97.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 15.01% (0.15011) | 96.28th | v5 (v2026.06.15) |
| Dec 28, 2025 | 39.41% (0.39413) | 97.15th | v4 (v2025.03.14) |
| Dec 27, 2025 | 43.00% (0.42997) | 97.38th | v4 (v2025.03.14) |
| Nov 4, 2025 | 39.41% (0.39413) | 97.11th | v4 (v2025.03.14) |
| Oct 28, 2025 | 29.39% (0.29394) | 96.36th | v4 (v2025.03.14) |
| Oct 27, 2025 | 38.98% (0.38985) | 97.10th | v4 (v2025.03.14) |
| Oct 1, 2025 | 29.39% (0.29394) | 96.45th | v4 (v2025.03.14) |
| Aug 2, 2025 | 38.40% (0.38404) | 97.13th | v4 (v2025.03.14) |
| Jul 30, 2025 | 42.41% (0.42407) | 97.34th | v4 (v2025.03.14) |
| May 28, 2025 | 30.45% (0.30449) | 96.43th | v4 (v2025.03.14) |
| Mar 30, 2025 | 27.04% (0.27038) | 95.95th | v4 (v2025.03.14) |
| Mar 29, 2025 | 31.54% (0.31541) | 94.95th | v4 (v2025.03.14) |
| Mar 17, 2025 | 27.04% (0.27038) | 95.96th | v4 (v2025.03.14) |
| Dec 17, 2024 | 82.81% (0.82809) | 98.65th | v3 (v2023.03.01) |
| Jan 13, 2024 | 57.96% (0.57962) | 97.43th | v3 (v2023.03.01) |
| Jul 6, 2023 | 53.68% (0.53681) | 97.12th | v3 (v2023.03.01) |
| Mar 13, 2023 | 46.70% (0.46699) | 96.82th | v3 (v2023.03.01) |
| Mar 7, 2023 | 45.80% (0.45805) | 96.81th | v3 (v2023.03.01) |
| Mar 6, 2023 | 47.94% (0.47944) | 98.60th | v2 (v2022.01.01) |
| Feb 4, 2022 | 47.94% (0.47944) | 98.10th | v2 (v2022.01.01) |
Weaknesses (1)
References (30)
- http://cvs.php.net/viewvc.cgi/ZendEngine2/zend_alloc.c?r1=1.161&r2=1.162 x_refsource_CONFIRM
- http://lists.suse.com/archive/suse-security-announce/2006-Oct/0002.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2006-0688.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2006-0708.html vendor-advisoryx_refsource_REDHATPatchVendor Advisory
- http://secunia.com/advisories/22280 third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
- http://secunia.com/advisories/22281 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/22300 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/22331 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/22338 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/22533 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/22538 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/22650 third-party-advisoryx_refsource_SECUNIA
- http://securityreason.com/securityalert/1691 third-party-advisoryx_refsource_SREASON
- http://securitytracker.com/id?1016984 vdb-entryx_refsource_SECTRACKPatch
- http://support.avaya.com/elmodocs2/security/ASA-2006-223.htm x_refsource_CONFIRM
- http://support.avaya.com/elmodocs2/security/ASA-2006-234.htm x_refsource_CONFIRM
- http://www.gentoo.org/security/en/glsa/glsa-200610-14.xml vendor-advisoryx_refsource_GENTOO
- http://www.hardened-php.net/advisory_092006.133.html x_refsource_MISCVendor Advisory
- http://www.hardened-php.net/files/CVE-2006-4812.patch x_refsource_CONFIRMPatch
- http://www.securityfocus.com/archive/1/448014/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/448953/100/0/threaded vendor-advisoryx_refsource_OPENPKG
- http://www.securityfocus.com/bid/20349 vdb-entryx_refsource_BID
- http://www.trustix.org/errata/2006/0055 vendor-advisoryx_refsource_TRUSTIX
- http://www.ubuntu.com/usn/usn-362-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2006/3922 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2006-4812 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1618205 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/29362 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2006-4812
- https://www.cve.org/CVERecord?id=CVE-2006-4812
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Oct 9, 2006
Updated Aug 7, 2024
Reserved Sep 15, 2006
Link CVE-2006-4812
CISA Vulnrichment
Updated n/a