{"id":2224,"date":"2017-09-14T12:38:40","date_gmt":"2017-09-14T10:38:40","guid":{"rendered":"http:\/\/blogs.gentoo.org\/ago\/?p=2224"},"modified":"2017-09-22T09:12:23","modified_gmt":"2017-09-22T07:12:23","slug":"bento4-heap-based-buffer-overflow-in-ap4_bytestouint32be-ap4utils-h","status":"publish","type":"post","link":"https:\/\/blogs.gentoo.org\/ago\/2017\/09\/14\/bento4-heap-based-buffer-overflow-in-ap4_bytestouint32be-ap4utils-h\/","title":{"rendered":"bento4: heap-based buffer overflow in AP4_BytesToUInt32BE (Ap4Utils.h)"},"content":{"rendered":"

Description<\/strong>:
\nbento4<\/a> is a fast, modern, open source C++ toolkit for all your MP4 and MPEG DASH media format needs.<\/p>\n

The complete ASan output of the issue:<\/p>\n

# mp42aac $FILE out.aac\r\n==1966==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x617000000324 at pc 0x000000690d51 bp 0x7ffc25bed310 sp 0x7ffc25bed308                                                                          \r\nREAD of size 1 at 0x617000000324 thread T0                                                                                                                                                                        \r\n    #0 0x690d50 in AP4_BytesToUInt32BE(unsigned char const*) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4Utils.h:78:22                                                                                               \r\n    #1 0x690d50 in AP4_StszAtom::AP4_StszAtom(unsigned int, unsigned char, unsigned int, AP4_ByteStream&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4StszAtom.cpp:85                                                \r\n    #2 0x69036e in AP4_StszAtom::Create(unsigned int, AP4_ByteStream&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4StszAtom.cpp:51:16                                                                                \r\n    #3 0x5ca79a in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:442:20             \r\n    #4 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14                                        \r\n    #5 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:193:12                                       \r\n    #6 0x60b1d2 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:138:5               \r\n    #7 0x60b1d2 in AP4_ContainerAtom::Create(unsigned int, unsigned long long, bool, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:87                       \r\n    #8 0x5ca44c in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:751:20             \r\n    #9 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14                                        \r\n    #10 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:193:12                                      \r\n    #11 0x60b1d2 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:138:5              \r\n    #12 0x60b1d2 in AP4_ContainerAtom::Create(unsigned int, unsigned long long, bool, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:87                      \r\n    #13 0x5ca44c in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:751:20\r\n    #14 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14\r\n    #15 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:193:12\r\n    #16 0x60b1d2 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:138:5\r\n    #17 0x60b1d2 in AP4_ContainerAtom::Create(unsigned int, unsigned long long, bool, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:87\r\n    #18 0x5ca44c in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:751:20\r\n    #19 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14\r\n    #20 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:193:12\r\n    #21 0x60c099 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:138:5\r\n    #22 0x58e6ed in AP4_TrakAtom::AP4_TrakAtom(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4TrakAtom.cpp:165:5\r\n    #23 0x5c8e3b in AP4_TrakAtom::Create(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4TrakAtom.h:58:20\r\n    #24 0x5c8e3b in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:377\r\n    #25 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14\r\n    #26 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:193:12\r\n    #27 0x60c099 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:138:5\r\n    #28 0x5521b0 in AP4_MoovAtom::AP4_MoovAtom(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4MoovAtom.cpp:79:5\r\n    #29 0x5cad1d in AP4_MoovAtom::Create(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4MoovAtom.h:56:20\r\n    #30 0x5cad1d in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:357\r\n    #31 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14\r\n    #32 0x5c75c0 in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:150:12\r\n    #33 0x54ea2c in AP4_File::ParseStream(AP4_ByteStream&, AP4_AtomFactory&, bool) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4File.cpp:104:12\r\n    #34 0x54f0fa in AP4_File::AP4_File(AP4_ByteStream&, bool) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4File.cpp:78:5\r\n    #35 0x542552 in main \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Apps\/Mp42Aac\/Mp42Aac.cpp:242:32\r\n    #36 0x7f3271712680 in __libc_start_main \/var\/tmp\/portage\/sys-libs\/glibc-2.23-r4\/work\/glibc-2.23\/csu\/..\/csu\/libc-start.c:289\r\n    #37 0x44f3f8 in _start (\/usr\/bin\/mp42aac+0x44f3f8)\r\n\r\n0x617000000324 is located 0 bytes to the right of 676-byte region [0x617000000080,0x617000000324)\r\nallocated by thread T0 here:\r\n    #0 0x53dfb0 in operator new[](unsigned long) \/var\/tmp\/portage\/sys-libs\/compiler-rt-sanitizers-4.0.1\/work\/compiler-rt-4.0.1.src\/lib\/asan\/asan_new_delete.cc:84\r\n    #1 0x6909e3 in AP4_StszAtom::AP4_StszAtom(unsigned int, unsigned char, unsigned int, AP4_ByteStream&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4StszAtom.cpp:78:33\r\n    #2 0x69036e in AP4_StszAtom::Create(unsigned int, AP4_ByteStream&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4StszAtom.cpp:51:16\r\n    #3 0x5ca79a in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:442:20\r\n    #4 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14\r\n    #5 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:193:12\r\n    #6 0x60b1d2 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:138:5\r\n    #7 0x60b1d2 in AP4_ContainerAtom::Create(unsigned int, unsigned long long, bool, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:87\r\n    #8 0x5ca44c in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:751:20\r\n    #9 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14\r\n    #10 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:193:12\r\n    #11 0x60b1d2 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:138:5\r\n    #12 0x60b1d2 in AP4_ContainerAtom::Create(unsigned int, unsigned long long, bool, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:87\r\n    #13 0x5ca44c in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:751:20\r\n    #14 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14\r\n    #15 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:193:12\r\n    #16 0x60b1d2 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:138:5\r\n    #17 0x60b1d2 in AP4_ContainerAtom::Create(unsigned int, unsigned long long, bool, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:87\r\n    #18 0x5ca44c in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:751:20\r\n    #19 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14\r\n    #20 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:193:12\r\n    #21 0x60c099 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:138:5\r\n    #22 0x58e6ed in AP4_TrakAtom::AP4_TrakAtom(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4TrakAtom.cpp:165:5\r\n    #23 0x5c8e3b in AP4_TrakAtom::Create(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4TrakAtom.h:58:20\r\n    #24 0x5c8e3b in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:377\r\n    #25 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14\r\n    #26 0x60c561 in AP4_ContainerAtom::ReadChildren(AP4_AtomFactory&, AP4_ByteStream&, unsigned long long) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:193:12\r\n    #27 0x60c099 in AP4_ContainerAtom::AP4_ContainerAtom(unsigned int, unsigned long long, bool, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4ContainerAtom.cpp:138:5\r\n    #28 0x5521b0 in AP4_MoovAtom::AP4_MoovAtom(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4MoovAtom.cpp:79:5\r\n    #29 0x5cad1d in AP4_MoovAtom::Create(unsigned int, AP4_ByteStream&, AP4_AtomFactory&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4MoovAtom.h:56:20\r\n    #30 0x5cad1d in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned int, unsigned int, unsigned long long, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:357\r\n    #31 0x5c7fbd in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, unsigned long long&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:220:14\r\n    #32 0x5c75c0 in AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream&, AP4_Atom*&) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4AtomFactory.cpp:150:12\r\n    #33 0x54ea2c in AP4_File::ParseStream(AP4_ByteStream&, AP4_AtomFactory&, bool) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4File.cpp:104:12\r\n    #34 0x54f0fa in AP4_File::AP4_File(AP4_ByteStream&, bool) \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4File.cpp:78:5\r\n\r\nSUMMARY: AddressSanitizer: heap-buffer-overflow \/tmp\/Bento4-1.5.0-617\/Source\/C++\/Core\/Ap4Utils.h:78:22 in AP4_BytesToUInt32BE(unsigned char const*)\r\nShadow bytes around the buggy address:\r\n  0x0c2e7fff8010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n  0x0c2e7fff8020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n  0x0c2e7fff8030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n  0x0c2e7fff8040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n  0x0c2e7fff8050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\r\n=>0x0c2e7fff8060: 00 00 00 00[04]fa fa fa fa fa fa fa fa fa fa fa\r\n  0x0c2e7fff8070: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\r\n  0x0c2e7fff8080: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\r\n  0x0c2e7fff8090: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\r\n  0x0c2e7fff80a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\r\n  0x0c2e7fff80b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa\r\nShadow byte legend (one shadow byte represents 8 application bytes):\r\n  Addressable:           00\r\n  Partially addressable: 01 02 03 04 05 06 07 \r\n  Heap left redzone:       fa\r\n  Freed heap region:       fd\r\n  Stack left redzone:      f1\r\n  Stack mid redzone:       f2\r\n  Stack right redzone:     f3\r\n  Stack after return:      f5\r\n  Stack use after scope:   f8\r\n  Global redzone:          f9\r\n  Global init order:       f6\r\n  Poisoned by user:        f7\r\n  Container overflow:      fc\r\n  Array cookie:            ac\r\n  Intra object redzone:    bb\r\n  ASan internal:           fe\r\n  Left alloca redzone:     ca\r\n  Right alloca redzone:    cb\r\n==1966==ABORTING\r\n<\/font><\/pre>\n
Affected version:<\/strong>
\n1.5.0-617<\/p>\n
Fixed version:<\/strong>
\nN\/A<\/p>\n
Commit fix:<\/strong>
\nhttps:\/\/github.com\/axiomatic-systems\/Bento4\/commit\/5eb8cf89d724ccb0b4ce5f24171ec7c11f0a7647<\/a><\/p>\n
Credit:<\/strong>
\nThis bug was discovered by Agostino Sarubbo of Gentoo.<\/p>\n
CVE:<\/strong>
\nCVE-2017-14643<\/p>\n
Reproducer:<\/strong>
\nhttps:\/\/github.com\/asarubbo\/poc\/blob\/master\/00341-bento4-heapoverflow-AP4_BytesToUInt32BE<\/a><\/p>\n
Timeline:<\/strong>
\n2017-09-08: bug discovered and reported to upstream
\n2017-09-14: blog post about the issue
\n2017-09-21: CVE assigned<\/p>\n
Note:<\/strong>
\nThis bug was found with American Fuzzy Lop<\/a>.
\nThis bug was identified with bare metal servers donated by Packet<\/a>. This work is also supported by the Core Infrastructure Initiative<\/a>.<\/p>\n
Permalink:<\/strong><\/p>\n
bento4: heap-based buffer overflow in AP4_BytesToUInt32BE (Ap4Utils.h)<\/a><\/p><\/blockquote>\n