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osvGoogleOSV:CVE-2017-8923
HistoryMay 12, 2017 - 8:29 p.m.

CVE-2017-8923

2017-05-1220:29:00
Google
osv.dev
11

AI Score

9.9

Confidence

High

EPSS

0.005

Percentile

77.4%

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.