* [Qemu-devel] The TFTP server has the Sourcerer's Apprentice bug
@ 2009-08-02 22:18 H. Peter Anvin
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From: H. Peter Anvin @ 2009-08-02 22:18 UTC (permalink / raw)
To: qemu-devel
Hello,
I was investigating a failure to TFTP boot, and I found that the TFTP
server in Qemu has the Sourcerer's Apprentice bug (see RFC 1123, section
4.2.3.1. Specifically, it is *required* that the sending side:
a) MUST NOT retransmit in response to a duplicated ACK.
b) MUST retransmit based on timeouts.
(a) is trivial to fix, but (b) requires a little more knowledge of the
internals than I'm willing to devote my Sunday afternoon to fixing...
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
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2009-08-02 22:18 [Qemu-devel] The TFTP server has the Sourcerer's Apprentice bug H. Peter Anvin
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