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librecad.17497
0001-Added-bounds-check-to-CDataList-in-JWW-par...
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File 0001-Added-bounds-check-to-CDataList-in-JWW-parser.patch of Package librecad.17497
From 4edcbe72679f95cb60979c77a348c1522a20b0f4 Mon Sep 17 00:00:00 2001 From: eldstal <laeder.keps@gmail.com> Date: Sat, 18 Dec 2021 23:55:22 +0100 Subject: [PATCH] Added bounds check to CDataList in JWW parser This fixes issue #1464 --- libraries/jwwlib/src/jwwdoc.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/libraries/jwwlib/src/jwwdoc.h b/libraries/jwwlib/src/jwwdoc.h index fc8cd217..7ccf2d83 100644 --- a/libraries/jwwlib/src/jwwdoc.h +++ b/libraries/jwwlib/src/jwwdoc.h @@ -793,7 +793,17 @@ cout << "MojiData1:" << m_strName << endl; }else { ifstr >> wd; + + jwDWORD skip = 0; + if (wd > 511) { + skip = wd - 511; + wd = 511; + } + ifstr.read(buf,wd); + + if (skip != 0) ifstr.ignore(skip); + buf[wd] = '\0'; m_strName = buf; #ifdef DATA_DUMP -- 2.36.1
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