Description
The bcpowmod function in ext/bcmath/bcmath.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 accepts a negative integer for the scale argument, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted call.
Remediation
References
Related Vulnerabilities
Liferay Portal Incorrect Default Permissions Vulnerability (CVE-2021-33324)
OpenSSL Resource Management Errors Vulnerability (CVE-2011-4619)
WordPress Plugin WoWPth Cross-Site Scripting (2.0)
Twisted Web HTTP Server Direct Request ('Forced Browsing') Vulnerability (CVE-2016-1000111)
Envoy Proxy Improper Check for Unusual or Exceptional Conditions Vulnerability (CVE-2021-39162)