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https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7880

Bug ID: 7880
Summary: Can't call method "name" on an undefined value at
lib/Mail/SpamAssassin/Message/Node.pm line 533
(nullref exception)
Product: Spamassassin
Version: SVN Trunk (Latest Devel Version)
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Libraries
Assignee: dev@spamassassin.apache.org
Reporter: jhardin@impsec.org
Target Milestone: Undefined

r1864393 introduced a nullref weakness in a Node.pm debug message that triggers
when a UTF-16 header (or, presumably, body part) is too short for
detect_utf16() to be able to detect the endianness from the encoded data (or,
presumably, when it cannot detect the endianness for some other reason).

This occurs even if the UTF-16 data includes a BOM.

3.4 does not have this nullref weakness as the debug message change was not
backported.

Repro: Put this header in a test message:

From:=?UTF-16?B?//492Enc?= DermaCorrect <@ewFXg.maclostech320.xyz;live.de;>

(note: malformed header is verbatim from actual spam)

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