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Diffstat (limited to 'results/scraper/launchpad-without-comments/1879531')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1879531 | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1879531 b/results/scraper/launchpad-without-comments/1879531 new file mode 100644 index 00000000..3c2ce0a6 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1879531 @@ -0,0 +1,99 @@ +Stack-overflow in _eth_get_rss_ex_dst_addr + +Hello, +While fuzzing, I found a 1-byte stack-overflow (read) through the +e1000e. + +==10318==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffdb76c16c2 at pc 0x55594f1a69e1 bp 0x7ffdb76c15a0 sp 0x7ffdb76c1598 +READ of size 1 at 0x7ffdb76c16c2 thread T0 + #0 0x55594f1a69e0 in _eth_get_rss_ex_dst_addr /home/alxndr/Development/qemu/net/eth.c:410:17 + #1 0x55594f1a39da in eth_parse_ipv6_hdr /home/alxndr/Development/qemu/net/eth.c:532:17 + #2 0x55594ebc34f2 in net_tx_pkt_parse_headers /home/alxndr/Development/qemu/hw/net/net_tx_pkt.c:228:14 + #3 0x55594ebc2149 in net_tx_pkt_parse /home/alxndr/Development/qemu/hw/net/net_tx_pkt.c:273:9 + #4 0x55594ec1ba76 in e1000e_process_tx_desc /home/alxndr/Development/qemu/hw/net/e1000e_core.c:737:29 + #5 0x55594ec1aea4 in e1000e_start_xmit /home/alxndr/Development/qemu/hw/net/e1000e_core.c:934:9 + #6 0x55594ec0e70e in e1000e_set_tdt /home/alxndr/Development/qemu/hw/net/e1000e_core.c:2451:9 + #7 0x55594ebec435 in e1000e_core_write /home/alxndr/Development/qemu/hw/net/e1000e_core.c:3261:9 + #8 0x55594ebdf11b in e1000e_mmio_write /home/alxndr/Development/qemu/hw/net/e1000e.c:109:5 + #9 0x55594dfd98b1 in memory_region_write_accessor /home/alxndr/Development/qemu/memory.c:483:5 + #10 0x55594dfd9211 in access_with_adjusted_size /home/alxndr/Development/qemu/memory.c:544:18 + #11 0x55594dfd7c30 in memory_region_dispatch_write /home/alxndr/Development/qemu/memory.c:1476:16 + #12 0x55594dde24b8 in flatview_write_continue /home/alxndr/Development/qemu/exec.c:3137:23 + #13 0x55594ddd12dc in flatview_write /home/alxndr/Development/qemu/exec.c:3177:14 + #14 0x55594ddd0dec in address_space_write /home/alxndr/Development/qemu/exec.c:3268:18 + #15 0x55594dfcdbdc in qtest_process_command /home/alxndr/Development/qemu/qtest.c:567:9 + #16 0x55594dfc3700 in qtest_process_inbuf /home/alxndr/Development/qemu/qtest.c:710:9 + #17 0x55594dfc2cc8 in qtest_read /home/alxndr/Development/qemu/qtest.c:722:5 + #18 0x55594f74b259 in qemu_chr_be_write_impl /home/alxndr/Development/qemu/chardev/char.c:183:9 + #19 0x55594f74b3ee in qemu_chr_be_write /home/alxndr/Development/qemu/chardev/char.c:195:9 + #20 0x55594f7556fc in fd_chr_read /home/alxndr/Development/qemu/chardev/char-fd.c:68:9 + #21 0x55594f7ea488 in qio_channel_fd_source_dispatch /home/alxndr/Development/qemu/io/channel-watch.c:84:12 + #22 0x7f43f6c1d897 in g_main_context_dispatch (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x4e897) + #23 0x55594f9dea5d in glib_pollfds_poll /home/alxndr/Development/qemu/util/main-loop.c:219:9 + #24 0x55594f9dd1d7 in os_host_main_loop_wait /home/alxndr/Development/qemu/util/main-loop.c:242:5 + #25 0x55594f9dcd6e in main_loop_wait /home/alxndr/Development/qemu/util/main-loop.c:518:11 + #26 0x55594e44cd01 in qemu_main_loop /home/alxndr/Development/qemu/softmmu/vl.c:1664:9 + #27 0x55594f803c21 in main /home/alxndr/Development/qemu/softmmu/main.c:49:5 + #28 0x7f43f57b4e0a in __libc_start_main /build/glibc-GwnBeO/glibc-2.30/csu/../csu/libc-start.c:308:16 + #29 0x55594dd03889 in _start (/home/alxndr/Development/qemu/build/i386-softmmu/qemu-system-i386+0xdbd889) + +Address 0x7ffdb76c16c2 is located in stack of thread T0 at offset 34 in frame + #0 0x55594f1a303f in eth_parse_ipv6_hdr /home/alxndr/Development/qemu/net/eth.c:486 + + This frame has 1 object(s): + [32, 34) 'ext_hdr' (line 487) <== Memory access at offset 34 overflows this variable +HINT: this may be a false positive if your program uses some custom stack unwind mechanism, swapcontext or vfork + (longjmp and C++ exceptions *are* supported) +SUMMARY: AddressSanitizer: stack-buffer-overflow /home/alxndr/Development/qemu/net/eth.c:410:17 in _eth_get_rss_ex_dst_addr +Shadow bytes around the buggy address: + 0x100036ed0280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + 0x100036ed0290: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + 0x100036ed02a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + 0x100036ed02b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + 0x100036ed02c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +=>0x100036ed02d0: 00 00 00 00 f1 f1 f1 f1[02]f3 f3 f3 00 00 00 00 + 0x100036ed02e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + 0x100036ed02f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + 0x100036ed0300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + 0x100036ed0310: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + 0x100036ed0320: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +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 + Shadow gap: cc +==10318==ABORTING + +I can reproduce it in qemu 5.0 built with address sanitizer using: + +cat << EOF | ./qemu-system-i386 -M pc-q35-5.0 -accel qtest -qtest stdio -monitor none -serial none -nographic +outl 0xcf8 0x80001010 +outl 0xcfc 0xe1020000 +outl 0xcf8 0x80001014 +outl 0xcf8 0x80001004 +outw 0xcfc 0x7 +outl 0xcf8 0x800010a2 +write 0x25 0x2b 0x86dd1900ff5df747002bfc90dd1900ff5df747002bfc9add1900ff5df747002bfca4dd1900ff5df747002b +write 0xe1020030 0x409 0x190002e100000000350908077cdd190002e100000000350912077cdd190002e10000000035091c077cdd190002e100000000350926077cdd190002e100000000350930077cdd190002e10000000035093a077cdd190002e100000000350944077cdd190002e10000000035094e077cdd190002e100000000350958077cdd190002e100000000350962077cdd190002e10000000035096c077cdd190002e100000000350976077cdd190002e100000000350980077cdd190002e10000000035098a077cdd190002e100000000350994077cdd190002e10000000035099e077cdd190002e1000000003509a8077cdd190002e1000000003509b2077cdd190002e1000000003509bc077cdd190002e1000000003509c6077cdd190002e1000000003509d0077cdd190002e1000000003509da077cdd190002e1000000003509e4077cdd190002e1000000003509ee077cdd190002e1000000003509f8077cdd190002e100000000350902077cdd190002e10000000035090c077cdd190002e100000000350916077cdd190002e100000000350920077cdd190002e10000000035092a077cdd190002e100000000350934077cdd190002e10000000035093e077cdd190002e100000000350948077cdd190002e100000000350952077cdd190002e10000000035095c077cdd190002e100000000350966077cdd190002e100000000350970077cdd190002e10000000035097a077cdd190002e100000000350984077cdd190002e10000000035098e077cdd190002e100000000350998077cdd190002e1000000003509a2077cdd190002e1000000003509ac077cdd190002e1000000003509b6077cdd190002e1000000003509c0077cdd190002e1000000003509ca077cdd190002e1000000003509d4077cdd190002e1000000003509de077cdd190002e1000000003509e8077cdd190002e1000000003509f2077cdd190002e1000000003509fc077cdd190002e100000000350906077cdd190002e100000000350910077cdd190002e10000000035091a077cdd190002e100000000350924077cdd190002e10000000035092e077cdd190002e100000000350938077cdd190002e100000000350942077cdd190002e10000000035094c077cdd190002e100000000350956077cdd190002e100000000350960077cdd190002e10000000035096a077cdd190002e100000000350974077cdd190002e10000000035097e077cdd190002e100000000350988077cdd190002e100000000350992077cdd190002e10000000035099c077cdd190002e1000000003509a6077cdd190002e1000000003509b0077cdd190002e1000000003509ba077cdd190002e1000000003509c4077cdd190002e1000000003509ce077cdd190002e1000000003509d8077cdd190002e1000000003509e2 +EOF + +Also attaching these commands. They can be executed with +./qemu-system-i386 -M pc-q35-5.0 -accel qtest -qtest stdio -monitor none -serial none -nographic < attachment + +Let me know if I can provide any further info. +-Alex \ No newline at end of file |