RubySec

Providing security resources for the Ruby community

CVE-2017-1002201 (haml): haml failure to escape single quotes

ADVISORIES

GEM

haml

SEVERITY

CVSS v3: 6.1

CVSS v2: 4.3

PATCHED VERSIONS

  • >= 5.0.0.beta.2

DESCRIPTION

In haml versions prior to version 5.0.0.beta.2, when using user input to perform tasks on the server, characters like < > “ ‘ must be escaped properly. In this case, the ‘ character was missed. An attacker can manipulate the input to introduce additional attributes, potentially executing code.