CVE-2017-8923
Summary
| CVE | CVE-2017-8923 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-05-12 20:29:00 UTC |
| Updated | 2025-04-20 01:37:25 UTC |
| Description | The zend_string_extend function in Zend/zend_string.h in PHP through 7.1.5 does not prevent changes to string objects that result in a negative length, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact by leveraging a script's use of .= with a long string. |
Risk And Classification
Primary CVSS: v3.1 9.8 CRITICAL from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Problem Types: CWE-787 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
PartialAvailability
PartialAV:N/AC:L/Au:N/C:P/I:P/A:P
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| security.netapp.com/advisory/ntap-20241227-0007 | af854a3a-2127-422b-91ae-364da2661108 | security.netapp.com | |
| PHP :: Bug #74577 :: Memory corruption in zend_string_extend | af854a3a-2127-422b-91ae-364da2661108 | bugs.php.net | Exploit, Issue Tracking, Vendor Advisory |
| PHP 'zend_string_extend()' Function Denial of Service Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 198686 Ubuntu Security Notification for Hypertext Preprocessor (PHP) Vulnerabilities (USN-5300-2)
- 198690 Ubuntu Security Notification for Hypertext Preprocessor (PHP) Vulnerabilities (USN-5300-3)
- 672181 EulerOS Security Update for Hypertext Preprocessor (PHP) (EulerOS-SA-2022-2477)
- 751733 SUSE Enterprise Linux Security Update for php74 (SUSE-SU-2022:0530-1)
- 751763 SUSE Enterprise Linux Security Update for php72 (SUSE-SU-2022:0577-1)
- 751772 SUSE Enterprise Linux Security Update for php7 (SUSE-SU-2022:0679-1)
- 751779 OpenSUSE Security Update for php7 (openSUSE-SU-2022:0679-1)
- 751825 OpenSUSE Security Update for php7 (openSUSE-SU-2022:0699-1)
- 751826 OpenSUSE Security Update for nodejs8 (openSUSE-SU-22022:20000-2)
- 751828 OpenSUSE Security Update for php7 (openSUSE-SU-22022:20000-2)
- 752878 SUSE Enterprise Linux Security Update for php7 (SUSE-SU-2022:4067-1)
- 752898 SUSE Enterprise Linux Security Update for php7 (SUSE-SU-2022:4069-1)
- 752901 SUSE Enterprise Linux Security Update for php74 (SUSE-SU-2022:4068-1)
- 753413 SUSE Enterprise Linux Security Update for php7 (SUSE-SU-2022:0699-1)
- 902524 Common Base Linux Mariner (CBL-Mariner) Security Update for Hypertext Preprocessor (PHP) (10142)