Out-of-bounds Write Affecting php7-fileinfo package, versions <7.2.34-150000.4.103.1


Severity

Recommended
low

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.74% (81st percentile)

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  • Snyk IDSNYK-SLES150-PHP7FILEINFO-3128538
  • published19 Nov 2022
  • disclosed18 Nov 2022

Introduced: 18 Nov 2022

CVE-2017-8923  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade SLES:15.0 php7-fileinfo to version 7.2.34-150000.4.103.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php7-fileinfo package and not the php7-fileinfo package as distributed by SLES. See How to fix? for SLES:15.0 relevant fixed versions and status.

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.

CVSS Scores

version 3.1