Headline
CVE-2022-43240: Heap-buffer-overflow in sse-motion.cc: ff_hevc_put_hevc_qpel_h_2_v_1_sse · Issue #335 · strukturag/libde265
Libde265 v1.0.8 was discovered to contain a heap-buffer-overflow vulnerability via ff_hevc_put_hevc_qpel_h_2_v_1_sse in sse-motion.cc. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted video file.
Description
Heap-buffer-overflow (/libde265/build/libde265/liblibde265.so+0x2831a1) in ff_hevc_put_hevc_qpel_h_2_v_1_sse(short*, long, unsigned char const*, long, int, int, short*)
Version
$ ./dec265 -h dec265 v1.0.8
usage: dec265 [options] videofile.bin The video file must be a raw bitstream, or a stream with NAL units (option -n).
options: -q, --quiet do not show decoded image -t, --threads N set number of worker threads (0 - no threading) -c, --check-hash perform hash check -n, --nal input is a stream with 4-byte length prefixed NAL units -f, --frames N set number of frames to process -o, --output write YUV reconstruction -d, --dump dump headers -0, --noaccel do not use any accelerated code (SSE) -v, --verbose increase verbosity level (up to 3 times) -L, --no-logging disable logging -B, --write-bytestream FILENAME write raw bytestream (from NAL input) -m, --measure YUV compute PSNRs relative to reference YUV -T, --highest-TID select highest temporal sublayer to decode –disable-deblocking disable deblocking filter –disable-sao disable sample-adaptive offset filter -h, --help show help
Replay
git clone https://github.com/strukturag/libde265.git cd libde265 mkdir build cd build cmake …/ -DCMAKE_CXX_FLAGS="-fsanitize=address" make -j$(nproc) ./dec265/dec265 poc1
ASAN
WARNING: non-existing PPS referenced
WARNING: non-existing PPS referenced
WARNING: CTB outside of image area (concealing stream error...)
WARNING: slice header invalid
=================================================================
==8080==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x7f80809038b9 at pc 0x7f807f61d1a2 bp 0x7fff6fd46c30 sp 0x7fff6fd46c20
READ of size 16 at 0x7f80809038b9 thread T0
#0 0x7f807f61d1a1 in ff_hevc_put_hevc_qpel_h_2_v_1_sse(short*, long, unsigned char const*, long, int, int, short*) (/libde265/build/libde265/liblibde265.so+0x2831a1)
#1 0x7f807f51137d in acceleration_functions::put_hevc_qpel(short*, long, void const*, long, int, int, short*, int, int, int) const (/libde265/build/libde265/liblibde265.so+0x17737d)
#2 0x7f807f5128ab in void mc_luma<unsigned char>(base_context const*, seq_parameter_set const*, int, int, int, int, short*, int, unsigned char const*, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x1788ab)
#3 0x7f807f503995 in generate_inter_prediction_samples(base_context*, slice_segment_header const*, de265_image*, int, int, int, int, int, int, int, PBMotion const*) (/libde265/build/libde265/liblibde265.so+0x169995)
#4 0x7f807f51090f in decode_prediction_unit(base_context*, slice_segment_header const*, de265_image*, PBMotionCoding const&, int, int, int, int, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x17690f)
#5 0x7f807f54b7e3 in read_prediction_unit(thread_context*, int, int, int, int, int, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x1b17e3)
#6 0x7f807f54d264 in read_coding_unit(thread_context*, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x1b3264)
#7 0x7f807f54e250 in read_coding_quadtree(thread_context*, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x1b4250)
#8 0x7f807f54e218 in read_coding_quadtree(thread_context*, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x1b4218)
#9 0x7f807f54e218 in read_coding_quadtree(thread_context*, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x1b4218)
#10 0x7f807f54e218 in read_coding_quadtree(thread_context*, int, int, int, int) (/libde265/build/libde265/liblibde265.so+0x1b4218)
#11 0x7f807f545726 in read_coding_tree_unit(thread_context*) (/libde265/build/libde265/liblibde265.so+0x1ab726)
#12 0x7f807f54e9ea in decode_substream(thread_context*, bool, bool) (/libde265/build/libde265/liblibde265.so+0x1b49ea)
#13 0x7f807f55070f in read_slice_segment_data(thread_context*) (/libde265/build/libde265/liblibde265.so+0x1b670f)
#14 0x7f807f4af6d2 in decoder_context::decode_slice_unit_sequential(image_unit*, slice_unit*) (/libde265/build/libde265/liblibde265.so+0x1156d2)
#15 0x7f807f4afec1 in decoder_context::decode_slice_unit_parallel(image_unit*, slice_unit*) (/libde265/build/libde265/liblibde265.so+0x115ec1)
#16 0x7f807f4aec0f in decoder_context::decode_some(bool*) (/libde265/build/libde265/liblibde265.so+0x114c0f)
#17 0x7f807f4ae93d in decoder_context::read_slice_NAL(bitreader&, NAL_unit*, nal_header&) (/libde265/build/libde265/liblibde265.so+0x11493d)
#18 0x7f807f4b143e in decoder_context::decode_NAL(NAL_unit*) (/libde265/build/libde265/liblibde265.so+0x11743e)
#19 0x7f807f4b1ab3 in decoder_context::decode(int*) (/libde265/build/libde265/liblibde265.so+0x117ab3)
#20 0x7f807f498e95 in de265_decode (/libde265/build/libde265/liblibde265.so+0xfee95)
#21 0x55c0d6940bc9 in main (/libde265/build/dec265/dec265+0x6bc9)
#22 0x7f807efcac86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
#23 0x55c0d693e9b9 in _start (/libde265/build/dec265/dec265+0x49b9)
0x7f80809038b9 is located 169 bytes to the right of 131088-byte region [0x7f80808e3800,0x7f8080903810)
allocated by thread T0 here:
#0 0x7f807f9c1790 in posix_memalign (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdf790)
#1 0x7f807f4ea1cb in ALLOC_ALIGNED(unsigned long, unsigned long) (/libde265/build/libde265/liblibde265.so+0x1501cb)
#2 0x7f807f4ea92a in de265_image_get_buffer(void*, de265_image_spec*, de265_image*, void*) (/libde265/build/libde265/liblibde265.so+0x15092a)
#3 0x7f807f4ecd1a in de265_image::alloc_image(int, int, de265_chroma, std::shared_ptr<seq_parameter_set const>, bool, decoder_context*, long, void*, bool) (/libde265/build/libde265/liblibde265.so+0x152d1a)
#4 0x7f807f4d10cc in decoded_picture_buffer::new_image(std::shared_ptr<seq_parameter_set const>, decoder_context*, long, void*, bool) (/libde265/build/libde265/liblibde265.so+0x1370cc)
#5 0x7f807f4b2824 in decoder_context::generate_unavailable_reference_picture(seq_parameter_set const*, int, bool) (/libde265/build/libde265/liblibde265.so+0x118824)
#6 0x7f807f4b57f5 in decoder_context::process_reference_picture_set(slice_segment_header*) (/libde265/build/libde265/liblibde265.so+0x11b7f5)
#7 0x7f807f4b8d70 in decoder_context::process_slice_segment_header(slice_segment_header*, de265_error*, long, nal_header*, void*) (/libde265/build/libde265/liblibde265.so+0x11ed70)
#8 0x7f807f4ae246 in decoder_context::read_slice_NAL(bitreader&, NAL_unit*, nal_header&) (/libde265/build/libde265/liblibde265.so+0x114246)
#9 0x7f807f4b143e in decoder_context::decode_NAL(NAL_unit*) (/libde265/build/libde265/liblibde265.so+0x11743e)
#10 0x7f807f4b1ab3 in decoder_context::decode(int*) (/libde265/build/libde265/liblibde265.so+0x117ab3)
#11 0x7f807f498e95 in de265_decode (/libde265/build/libde265/liblibde265.so+0xfee95)
#12 0x55c0d6940bc9 in main (/libde265/build/dec265/dec265+0x6bc9)
#13 0x7f807efcac86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
SUMMARY: AddressSanitizer: heap-buffer-overflow (/libde265/build/libde265/liblibde265.so+0x2831a1) in ff_hevc_put_hevc_qpel_h_2_v_1_sse(short*, long, unsigned char const*, long, int, int, short*)
Shadow bytes around the buggy address:
0x0ff0901186c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0ff0901186d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0ff0901186e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0ff0901186f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0ff090118700: 00 00 fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0ff090118710: fa fa fa fa fa fa fa[fa]fa fa fa fa fa fa fa fa
0x0ff090118720: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0ff090118730: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0ff090118740: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0ff090118750: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0ff090118760: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==8080==ABORTING
POC
https://github.com/FDU-Sec/poc/blob/main/libde265/poc1
Environment
Ubuntu 16.04
Clang 10.0.1
gcc 5.5Related news
Gentoo Linux Security Advisory 202408-20 - Multiple vulnerabilities have been discovered in libde265, the worst of which could lead to arbitrary code execution. Versions greater than or equal to 1.0.11 are affected.
Ubuntu Security Notice 6627-1 - It was discovered that libde265 could be made to read out of bounds. If a user or automated system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service. It was discovered that libde265 did not properly manage memory. If a user or automated system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 22.04 LTS.
Debian Linux Security Advisory 5346-1 - Multiple security issues were discovered in libde265, an implementation of the H.265 video codec which may result in denial of service and potentially the execution of arbitrary code if a malformed media file is processed.