CVE-2015-8394: pcre perl_compatible_regular_expression_library Integer Overflow or Wraparound

Vulnerability summary

CVE-2015-8394 is a critical (CVSS 9.8) Integer Overflow or Wraparound vulnerability in pcre perl_compatible_regular_expression_library. EPSS estimates a 4.81% chance of exploitation in the next 30 days, higher than 91.9% of scored vulnerabilities.

Timeline

1. 02-12-2015
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

PCRE before 8.38 mishandles the (?(<digits>) and (?(R<digits>) conditions, which allows remote attackers to cause a denial of service (integer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.