robin.thoni/ipxe - git rthoni.com

Michael Brown ff341c1861 [dns] Update end-of-name pointer after processing CNAME record Commit d4c0226 ("[dns] Support DNS search lists") introduced a regression when handling CNAME records resolving to names longer than the original name. The "end of name" offset stored in dns->offset was not updated to reflect the length of the new name, causing dns_question() to append the (empty) search suffix at an incorrect offset within the name buffer, resulting in a mangled DNS name. In the case of a CNAME record resolving to a name shorter than or equal in length to the original name, then the mangling would occur in an unused portion of the name buffer. In the common case of a name server returning the A (or AAAA) record along with the CNAME record, this would cause name resolution to succeed despite the mangling. (If the name server did not return the A or AAAA record along with the CNAME record, then the mangling would be revealed by the subsequent invalid query packet.) Reported-by: Nicolas Sylvain <nsylvain@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>		10 lat temu
contrib	[errdb] Strip platform error code for non-platform-generated errors	11 lat temu
src	[dns] Update end-of-name pointer after processing CNAME record	10 lat temu
COPYING	Initial revision	19 lat temu
COPYRIGHTS	[build] Rename gPXE to iPXE	14 lat temu
README	[doc] Re-add README file	14 lat temu

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org