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Gentoo's Bugzilla – Attachment 474572 Details for
Bug 620008
<app-arch/p7zip-16.02-r3: Denial of Service vulnerability affects the 16.02 and many old versions of p7zip (null pointer check)
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[patch]
p7zip-16.02-CVE-2016-9296.patch
p7zip-16.02-CVE-2016-9296.patch (text/plain), 1.00 KB, created by
Andrey Ovcharov
on 2017-05-28 12:18:09 UTC
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Description:
p7zip-16.02-CVE-2016-9296.patch
Filename:
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Creator:
Andrey Ovcharov
Created:
2017-05-28 12:18:09 UTC
Size:
1.00 KB
patch
obsolete
>p7zip: Avoid crashing while decoding certain malformed input > >https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-9296 >https://sourceforge.net/p/p7zip/bugs/185/#32aa >https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db >https://trac.macports.org/ticket/52982 > >Check whether folders.PackPositions is nonnull before accessing it. Fix >developed by Igor Pavlov. > >Upstream-Status: Backport [7-Zip 16.03 for Windows] >CVE: CVE-2016-9296 >Signed-off-by: Lawrence Velázquez <larryv@macports.org> > >Index: CPP/7zip/Archive/7z/7zIn.cpp >=================================================================== >--- CPP/7zip/Archive/7z/7zIn.cpp.orig >+++ CPP/7zip/Archive/7z/7zIn.cpp >@@ -1097,7 +1097,8 @@ HRESULT CInArchive::ReadAndDecodePackedS > if (CrcCalc(data, unpackSize) != folders.FolderCRCs.Vals[i]) > ThrowIncorrect(); > } >- HeadersSize += folders.PackPositions[folders.NumPackStreams]; >+ if (folders.PackPositions) >+ HeadersSize += folders.PackPositions[folders.NumPackStreams]; > return S_OK; > } >
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bug 620008
: 474572