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authorZhouyihai Ding <ddyihai@ddyihai.svl.corp.google.com>2018-01-10 10:12:18 -0800
committerJay Satiro <raysatiro@yahoo.com>2018-01-11 02:33:24 -0500
commitfa3dbb9a147488a2943bda809c66fc497efe06cb (patch)
tree8acbeb67864fc78059f71e1711ba491d3238d2f8 /tests/data/test2063
parent2a6dbb8155d3e96640d74f56a3be5cd557c33769 (diff)
http2: fix incorrect trailer buffer size
Prior to this change the stored byte count of each trailer was miscalculated and 1 less than required. It appears any trailer after the first that was passed to Curl_client_write would be truncated or corrupted as well as the size. Potentially the size of some subsequent trailer could be erroneously extracted from the contents of that trailer, and since that size is used by client write an out-of-bounds read could occur and cause a crash or be otherwise processed by client write. The bug appears to have been born in 0761a51 (precedes 7.49.0). Closes https://github.com/curl/curl/pull/2231
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