Buffer Overflow and Out-of-Bounds Read Vulnerability in PHP's FPM Log

Buffer Overflow and Out-of-Bounds Read Vulnerability in PHP's FPM Log

CVE-2016-5114 · MEDIUM Severity

AV:N/AC:L/AU:N/C:P/I:N/A:P

sapi/fpm/fpm/fpm_log.c in PHP before 5.5.31, 5.6.x before 5.6.17, and 7.x before 7.0.2 misinterprets the semantics of the snprintf return value, which allows attackers to obtain sensitive information from process memory or cause a denial of service (out-of-bounds read and buffer overflow) via a long string, as demonstrated by a long URI in a configuration with custom REQUEST_URI logging.

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