mirror of
https://github.com/openembedded/meta-openembedded.git
synced 2026-07-16 16:27:27 +00:00
Radovan Scasny
203027aa0e
Signed-off-by: Radovan Scasny <radovan.scasny@siemens.com> Signed-off-by: Andrej Valek <andrej.valek@siemens.com> Signed-off-by: Armin Kuster <akuster808@gmail.com>
32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
p7zip: Fix CVE-2017-17969
|
|
|
|
[No upstream tracking] -- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=888297
|
|
|
|
Heap-based buffer overflow in 7zip
|
|
|
|
Compress/ShrinkDecoder.cpp: Heap-based buffer overflow
|
|
in the NCompress::NShrink::CDecoder::CodeReal method
|
|
in 7-Zip before 18.00 and p7zip allows remote attackers
|
|
to cause a denial of service (out-of-bounds write)
|
|
or potentially execute arbitrary code via a crafted ZIP archive.
|
|
|
|
Upstream-Status: Backport [https://sourceforge.net/p/p7zip/bugs/_discuss/thread/0920f369/8316/attachment/CVE-2017-17969.patch]
|
|
CVE: CVE-2017-17969
|
|
Signed-off-by: Radovan Scasny <radovan.scasny@siemens.com>
|
|
|
|
--- 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 (cur >= kNumItems || i >= kNumItems)
|
|
+ break;
|
|
}
|
|
+
|
|
+ if (cur >= kNumItems || i >= kNumItems)
|
|
+ break;
|
|
|
|
_stack[i++] = (Byte)cur;
|
|
lastChar2 = (Byte)cur;
|