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authorJulian Andres Klode <julian.klode@canonical.com>2019-01-23 13:57:45 +0100
committerJulian Andres Klode <julian.klode@canonical.com>2019-01-30 13:33:24 +0100
commit711cda2302b0dfe5d4ab0588b245ae4a97863e5b (patch)
tree1b9a017af0495a8479e284cbe1f4a4c45712a959 /po
parent4200469bb5a14c4659285917ed30c46a0b15c286 (diff)
Verify data being sent by methods in SendMessage()
As a follow-up for CVE-2019-3462, add checks similar to those for redirect to the central SendMessage() function. The checks are a bit more relaxed for values - they may include newlines and unicode characters (newlines get rewritten, so are safe). For keys and the message header, the checks are far more strict: They may only contain alphanumerical characters, the hyphen-minus, and the horizontal space. In case the method tries to send anything else, we construct a legal 400 URI Failed response, and send that. We specifically do not include the item URI, in case it has been compromised (that would cause infinite recursion).
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