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Maurizio Cucchiara edited comment on LANG-871 at 1/26/15 2:03 PM: ------------------------------------------------------------------ [~bayard], though I agree with you, the truth is that there are many frameworks/applications which rely on escape* methods in terms of security. [~aree] An example would be appreciated. was (Author: maurizio.cucchiara): [~bayard], thought I agree with you, the truth is that there are many framework/application which rely on escape* methods in terms of security. [~aree] An input example would be appreciated. > [XSS] Possible attacks through StringEscapeUtils.escapeEcmaScript? > ------------------------------------------------------------------ > > Key: LANG-871 > URL: https://issues.apache.org/jira/browse/LANG-871 > Project: Commons Lang > Issue Type: Bug > Components: lang.* > Affects Versions: 3.1 > Reporter: Andy Reek > Labels: XSS > Fix For: Discussion > > > org.apache.commons.lang3.StringEscapeUtils.escapeEcmaScript does the escape > via a prefixed '\' on all characters which must be escaped. I am not sure if > this is really secure, if am looking at the comments on > https://www.owasp.org/index.php/XSS_(Cross_Site_Scripting)_Prevention_Cheat_Sheet#RULE_.233_-_JavaScript_Escape_Before_Inserting_Untrusted_Data_into_JavaScript_Data_Values. > They say it is possible to do an attack by escape the escape. I tested this > with the string '\"' and the output was '\\\"'. Is this really > ecma-/java-script secure? Or is it better to use the implementation used by > OWASP? -- This message was sent by Atlassian JIRA (v6.3.4#6332)