https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7721
Summary: wireshark.org SPF record(s) are malformed
Product: Web sites
Version: N/A
Platform: All
OS/Version: All
Status: NEW
Severity: Major
Priority: Medium
Component: Main site - www.wireshark.org
AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
ReportedBy: ethereal-dev-20030907@xxxxxxxxxxxxxxxxx
Build Information:
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The wireshark.org SPF record is composed of 3 strings:
"v=spf1"
"include:spf.wireshark.org"
"-all"
The spf.wireshark.org SPF record is composed of multiple strings:
"v=spf1"
"ip4:174.137.42.64/27"
"ip4:67.228.110.120/29"
"ip4:67.228.108.96/29"
"ip4:208.43.68.147/32"
"ip4:69.4.231.55/30"
"include:spf.postini.com"
"include:bluehost.com"
"-all"
The above definitions presumes that the separation of data into separate
strings is syntactically significant, however the rules for interpreting SPF
TXT records(in Section 3.1.3 of RFC 4408) clearly says:
3.1.3. Multiple Strings in a Single DNS record
As defined in [RFC1035] sections 3.3.14 and 3.3, a single text DNS
record (either TXT or SPF RR types) can be composed of more than one
string. If a published record contains multiple strings, then the
record MUST be treated as if those strings are concatenated together
without adding spaces. For example:
IN TXT "v=spf1 .... first" "second string..."
MUST be treated as equivalent to
IN TXT "v=spf1 .... firstsecond string..."
SPF or TXT records containing multiple strings are useful in
constructing records that would exceed the 255-byte maximum length of
a string within a single TXT or SPF RR record.
So, when the values contained in the two wireshark.org SPF records are read,
the separate strings are concatenated. The concatenated string doesn't parse
according to the SPF interpreting rules. This information should either be
contained in one string separated by spaces OR the separate strings should have
leading or trailing spaces to meet the required SPF syntax.
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