Upstream information

CVE-2017-8923 at MITRE

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.

SUSE information

CVSS v2 Scores
  National Vulnerability Database SUSE
Base Score 7.48 4.30
Vector AV:N/AC:L/Au:N/C:P/I:P/A:P AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network Network
Access Complexity Low Medium
Authentication None None
Confidentiality Impact Partial None
Integrity Impact Partial None
Availability Impact Partial Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 9.8 5.3
Vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Access Vector Network Network
Access Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High None
Integrity Impact High None
Availability Impact High Low

This issue is currently rated as having low severity.

SUSE Bugzilla entry: 1038980 [NEW]

No SUSE Security Announcements cross referenced.


List of planned updates

The following information is the current evaluation information for this security issue. It might neither be accurate nor complete, Use at own risk.
Product(s) Source package
  • SUSE Linux Enterprise Module for Web and Scripting 12
  • SUSE Linux Enterprise SDK 12 SP2
php7