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Off-by-one error in certain versions of xfstt allows remote attackers to read potentially sensitive memory via a malformed client request in the connection handshake, which leaks the memory in the server's response.



X Fontserver for Truetype fonts (xfstt) 1.4 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a (1) FS_QueryXExtents8 or (2) FS_QueryXBitmaps8 packet, and possibly other types of packets, with a large num_ranges value, which causes an out-of-bounds array access.


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