CVE-2018-18928: icu-project international_components_for_unicode Integer Overflow or Wraparound

Vulnerability summary

CVE-2018-18928 is a critical (CVSS 9.8) Integer Overflow or Wraparound vulnerability in icu-project international_components_for_unicode. EPSS estimates a 2.90% chance of exploitation in the next 30 days, higher than 86.7% of scored vulnerabilities.

Timeline

1. 04-11-2018
   PublishedVulnerability first disclosed.
2. 14-10-2026
   Last modifiedVulnerability information updated.

Description

International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toScientificString() in i18n/number_decimalquantity.cpp.

• 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.