Date: Monday, February 5, 2018 @ 17:04:51 Author: foutrelis Revision: 315905
upgpkg: p7zip 16.02-4 Add patches for CVE-2017-17969 and CVE-2018-5996 (FS#57383). Added: p7zip/trunk/CVE-2017-17969.patch p7zip/trunk/CVE-2018-5996.patch Modified: p7zip/trunk/PKGBUILD ----------------------+ CVE-2017-17969.patch | 26 +++++ CVE-2018-5996.patch | 221 +++++++++++++++++++++++++++++++++++++++++++++++++ PKGBUILD | 16 ++- 3 files changed, 260 insertions(+), 3 deletions(-) Added: CVE-2017-17969.patch =================================================================== --- CVE-2017-17969.patch (rev 0) +++ CVE-2017-17969.patch 2018-02-05 17:04:51 UTC (rev 315905) @@ -0,0 +1,26 @@ +From: =?utf-8?q?Antoine_Beaupr=C3=A9?= <[email protected]> +Date: Sun, 28 Jan 2018 21:19:50 +0100 +Subject: backport of the CVE-2017-17969 fix from 7zip 18.00-beta + +--- + CPP/7zip/Compress/ShrinkDecoder.cpp | 7 ++++++- + 1 file changed, 6 insertions(+), 1 deletion(-) + +diff --git a/CPP/7zip/Compress/ShrinkDecoder.cpp b/CPP/7zip/Compress/ShrinkDecoder.cpp +index 80b7e67..4acdce5 100644 +--- a/CPP/7zip/Compress/ShrinkDecoder.cpp ++++ b/CPP/7zip/Compress/ShrinkDecoder.cpp +@@ -121,7 +121,12 @@ HRESULT CDecoder::CodeReal(ISequentialInStream *inStream, ISequentialOutStream * + { + _stack[i++] = _suffixes[cur]; + cur = _parents[cur]; +- } ++ if (i >= kNumItems) ++ break; ++ } ++ ++ if (i >= kNumItems) ++ break; + + _stack[i++] = (Byte)cur; + lastChar2 = (Byte)cur; Added: CVE-2018-5996.patch =================================================================== --- CVE-2018-5996.patch (rev 0) +++ CVE-2018-5996.patch 2018-02-05 17:04:51 UTC (rev 315905) @@ -0,0 +1,221 @@ +From: Robert Luberda <[email protected]> +Date: Sun, 28 Jan 2018 23:47:40 +0100 +Subject: CVE-2018-5996 + +Hopefully fix Memory Corruptions via RAR PPMd (CVE-2018-5996) by +applying a few changes from 7Zip 18.00-beta. + +Bug-Debian: https://bugs.debian.org/#888314 +--- + CPP/7zip/Compress/Rar1Decoder.cpp | 13 +++++++++---- + CPP/7zip/Compress/Rar1Decoder.h | 1 + + CPP/7zip/Compress/Rar2Decoder.cpp | 10 +++++++++- + CPP/7zip/Compress/Rar2Decoder.h | 1 + + CPP/7zip/Compress/Rar3Decoder.cpp | 23 ++++++++++++++++++++--- + CPP/7zip/Compress/Rar3Decoder.h | 2 ++ + 6 files changed, 42 insertions(+), 8 deletions(-) + +diff --git a/CPP/7zip/Compress/Rar1Decoder.cpp b/CPP/7zip/Compress/Rar1Decoder.cpp +index 1aaedcc..68030c7 100644 +--- a/CPP/7zip/Compress/Rar1Decoder.cpp ++++ b/CPP/7zip/Compress/Rar1Decoder.cpp +@@ -29,7 +29,7 @@ public: + }; + */ + +-CDecoder::CDecoder(): m_IsSolid(false) { } ++CDecoder::CDecoder(): m_IsSolid(false), _errorMode(false) { } + + void CDecoder::InitStructures() + { +@@ -406,9 +406,14 @@ HRESULT CDecoder::CodeReal(ISequentialInStream *inStream, ISequentialOutStream * + InitData(); + if (!m_IsSolid) + { ++ _errorMode = false; + InitStructures(); + InitHuff(); + } ++ ++ if (_errorMode) ++ return S_FALSE; ++ + if (m_UnpackSize > 0) + { + GetFlagsBuf(); +@@ -477,9 +482,9 @@ STDMETHODIMP CDecoder::Code(ISequentialInStream *inStream, ISequentialOutStream + const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress) + { + try { return CodeReal(inStream, outStream, inSize, outSize, progress); } +- catch(const CInBufferException &e) { return e.ErrorCode; } +- catch(const CLzOutWindowException &e) { return e.ErrorCode; } +- catch(...) { return S_FALSE; } ++ catch(const CInBufferException &e) { _errorMode = true; return e.ErrorCode; } ++ catch(const CLzOutWindowException &e) { _errorMode = true; return e.ErrorCode; } ++ catch(...) { _errorMode = true; return S_FALSE; } + } + + STDMETHODIMP CDecoder::SetDecoderProperties2(const Byte *data, UInt32 size) +diff --git a/CPP/7zip/Compress/Rar1Decoder.h b/CPP/7zip/Compress/Rar1Decoder.h +index 630f089..01b606b 100644 +--- a/CPP/7zip/Compress/Rar1Decoder.h ++++ b/CPP/7zip/Compress/Rar1Decoder.h +@@ -39,6 +39,7 @@ public: + + Int64 m_UnpackSize; + bool m_IsSolid; ++ bool _errorMode; + + UInt32 ReadBits(int numBits); + HRESULT CopyBlock(UInt32 distance, UInt32 len); +diff --git a/CPP/7zip/Compress/Rar2Decoder.cpp b/CPP/7zip/Compress/Rar2Decoder.cpp +index b3f2b4b..0580c8d 100644 +--- a/CPP/7zip/Compress/Rar2Decoder.cpp ++++ b/CPP/7zip/Compress/Rar2Decoder.cpp +@@ -80,7 +80,8 @@ static const UInt32 kHistorySize = 1 << 20; + static const UInt32 kWindowReservSize = (1 << 22) + 256; + + CDecoder::CDecoder(): +- m_IsSolid(false) ++ m_IsSolid(false), ++ m_TablesOK(false) + { + } + +@@ -100,6 +101,8 @@ UInt32 CDecoder::ReadBits(unsigned numBits) { return m_InBitStream.ReadBits(numB + + bool CDecoder::ReadTables(void) + { ++ m_TablesOK = false; ++ + Byte levelLevels[kLevelTableSize]; + Byte newLevels[kMaxTableSize]; + m_AudioMode = (ReadBits(1) == 1); +@@ -170,6 +173,8 @@ bool CDecoder::ReadTables(void) + } + + memcpy(m_LastLevels, newLevels, kMaxTableSize); ++ m_TablesOK = true; ++ + return true; + } + +@@ -344,6 +349,9 @@ HRESULT CDecoder::CodeReal(ISequentialInStream *inStream, ISequentialOutStream * + return S_FALSE; + } + ++ if (!m_TablesOK) ++ return S_FALSE; ++ + UInt64 startPos = m_OutWindowStream.GetProcessedSize(); + while (pos < unPackSize) + { +diff --git a/CPP/7zip/Compress/Rar2Decoder.h b/CPP/7zip/Compress/Rar2Decoder.h +index 3a0535c..0e9005f 100644 +--- a/CPP/7zip/Compress/Rar2Decoder.h ++++ b/CPP/7zip/Compress/Rar2Decoder.h +@@ -139,6 +139,7 @@ class CDecoder : + + UInt64 m_PackSize; + bool m_IsSolid; ++ bool m_TablesOK; + + void InitStructures(); + UInt32 ReadBits(unsigned numBits); +diff --git a/CPP/7zip/Compress/Rar3Decoder.cpp b/CPP/7zip/Compress/Rar3Decoder.cpp +index 3bf2513..6cb8a6a 100644 +--- a/CPP/7zip/Compress/Rar3Decoder.cpp ++++ b/CPP/7zip/Compress/Rar3Decoder.cpp +@@ -92,7 +92,8 @@ CDecoder::CDecoder(): + _writtenFileSize(0), + _vmData(0), + _vmCode(0), +- m_IsSolid(false) ++ m_IsSolid(false), ++ _errorMode(false) + { + Ppmd7_Construct(&_ppmd); + } +@@ -545,6 +546,9 @@ HRESULT CDecoder::ReadTables(bool &keepDecompressing) + return InitPPM(); + } + ++ TablesRead = false; ++ TablesOK = false; ++ + _lzMode = true; + PrevAlignBits = 0; + PrevAlignCount = 0; +@@ -606,6 +610,9 @@ HRESULT CDecoder::ReadTables(bool &keepDecompressing) + } + } + } ++ if (InputEofError()) ++ return S_FALSE; ++ + TablesRead = true; + + // original code has check here: +@@ -623,6 +630,9 @@ HRESULT CDecoder::ReadTables(bool &keepDecompressing) + RIF(m_LenDecoder.Build(&newLevels[kMainTableSize + kDistTableSize + kAlignTableSize])); + + memcpy(m_LastLevels, newLevels, kTablesSizesSum); ++ ++ TablesOK = true; ++ + return S_OK; + } + +@@ -824,7 +834,12 @@ HRESULT CDecoder::CodeReal(ICompressProgressInfo *progress) + PpmEscChar = 2; + PpmError = true; + InitFilters(); ++ _errorMode = false; + } ++ ++ if (_errorMode) ++ return S_FALSE; ++ + if (!m_IsSolid || !TablesRead) + { + bool keepDecompressing; +@@ -838,6 +853,8 @@ HRESULT CDecoder::CodeReal(ICompressProgressInfo *progress) + bool keepDecompressing; + if (_lzMode) + { ++ if (!TablesOK) ++ return S_FALSE; + RINOK(DecodeLZ(keepDecompressing)) + } + else +@@ -901,8 +918,8 @@ STDMETHODIMP CDecoder::Code(ISequentialInStream *inStream, ISequentialOutStream + _unpackSize = outSize ? *outSize : (UInt64)(Int64)-1; + return CodeReal(progress); + } +- catch(const CInBufferException &e) { return e.ErrorCode; } +- catch(...) { return S_FALSE; } ++ catch(const CInBufferException &e) { _errorMode = true; return e.ErrorCode; } ++ catch(...) { _errorMode = true; return S_FALSE; } + // CNewException is possible here. But probably CNewException is caused + // by error in data stream. + } +diff --git a/CPP/7zip/Compress/Rar3Decoder.h b/CPP/7zip/Compress/Rar3Decoder.h +index c130cec..2f72d7d 100644 +--- a/CPP/7zip/Compress/Rar3Decoder.h ++++ b/CPP/7zip/Compress/Rar3Decoder.h +@@ -192,6 +192,7 @@ class CDecoder: + UInt32 _lastFilter; + + bool m_IsSolid; ++ bool _errorMode; + + bool _lzMode; + bool _unsupportedFilter; +@@ -200,6 +201,7 @@ class CDecoder: + UInt32 PrevAlignCount; + + bool TablesRead; ++ bool TablesOK; + + CPpmd7 _ppmd; + int PpmEscChar; Modified: PKGBUILD =================================================================== --- PKGBUILD 2018-02-05 15:36:47 UTC (rev 315904) +++ PKGBUILD 2018-02-05 17:04:51 UTC (rev 315905) @@ -8,7 +8,7 @@ pkgname=p7zip pkgver=16.02 -pkgrel=3 +pkgrel=4 pkgdesc="Command-line file archiver with high compression ratio" arch=('x86_64') url="http://p7zip.sourceforge.net/"; @@ -18,9 +18,13 @@ makedepends_x86_64=('yasm') install=$pkgname.install source=(https://downloads.sourceforge.net/project/$pkgname/$pkgname/$pkgver/${pkgname}_${pkgver}_src_all.tar.bz2 - CVE-2016-9296.patch) + CVE-2016-9296.patch + CVE-2017-17969.patch + CVE-2018-5996.patch) sha256sums=('5eb20ac0e2944f6cb9c2d51dd6c4518941c185347d4089ea89087ffdd6e2341f' - 'f9bcbf21d4aa8938861a6cba992df13dec19538286e9ed747ccec6d9a4e8f983') + 'f9bcbf21d4aa8938861a6cba992df13dec19538286e9ed747ccec6d9a4e8f983' + '0027f47eb8633244ac0177c1bb4ed50afa64ab757b34379a4b64ac923b9385b0' + '9c92b9060fb0ecc3e754e6440d7773d04bc324d0f998ebcebc263264e5a520df') prepare() { cd "$srcdir/${pkgname}_$pkgver" @@ -28,6 +32,12 @@ # https://sourceforge.net/p/p7zip/bugs/185/ patch -Np1 -i ../CVE-2016-9296.patch + # https://sourceforge.net/p/p7zip/bugs/204/ + patch -Np1 -i ../CVE-2017-17969.patch + + # Patch from Debian which hopefully fixes CVE-2018-5996 + patch -Np1 -i ../CVE-2018-5996.patch + if [[ $CARCH = x86_64 ]]; then cp makefile.linux_amd64_asm makefile.machine else
