https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120535
Bug ID: 120535
Summary: A heap buffer overflow occurs in liblto_plugin.so
during a strncmp() call
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: xdcao.cs at gmail dot com
Target Milestone: ---
Summary
Hello GCC Security Team,
I would like to report a heap buffer overflow vulnerability in the GCC-provided
liblto_plugin.so, which is triggered when invoked by nm (from binutils) using
LTO plugin support.
A heap buffer overflow occurs in liblto_plugin.so during a strncmp() call,
leading to an out-of-bounds read past an allocated heap buffer. This issue can
be reliably reproduced with AddressSanitizer.
The bug appears to be in internal memory management or string handling logic
within the LTO plugin.
Environment
GNU Binutils version: 2.44.50 & master
OS: Ubuntu 22.04.5 LTS
Steps to reproduce
The file POC is a crafted input file (we can share it securely on request) that
triggers the crash.
# export CFLAGS="-g -O0 -fno-inline -fno-lto -fsanitize=address"
# export CXXFLAGS="-g -O0 -fno-inline -fno-lto -fsanitize=address"
# ./configure --disable-werror --enable-targets=all --enable-gold[=yes]
# make -j64 & make install
root@46b925a575de:# ./c++filt -i -r -s auto @POC
AddressSanitizer:DEADLYSIGNAL
=================================================================
==512814==ERROR: AddressSanitizer: stack-overflow on address 0x7fff44b1bff8 (pc
0x0000008a5631 bp 0x7fff44b1c190 sp 0x7fff44b1c000 T0)
#0 0x8a5631 in eat
/root/this-program/binutils-gdb/build/libiberty/../../libiberty/rust-demangle.c:98
#1 0x8a7e4f in parse_integer_62
/root/this-program/binutils-gdb/build/libiberty/../../libiberty/rust-demangle.c:125:7
#2 0x8a47fe in demangle_path
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#3 0x8a4983 in demangle_path
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#4 0x8a488d in demangle_path
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#5 0x8a4983 in demangle_path
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#6 0x8a488d in demangle_path
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#7 0x8a4983 in demangle_path
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#8 0x8a488d in demangle_path
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#9 0x8a4983 in demangle_path
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#10 0x8a488d in demangle_path
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#11 0x8a4983 in demangle_path
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#12 0x8a488d in demangle_path
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#13 0x8a4983 in demangle_path
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#14 0x8a488d in demangle_path
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#15 0x8a4983 in demangle_path
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#16 0x8a488d in demangle_path
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#17 0x8a4983 in demangle_path
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#18 0x8a488d in demangle_path
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#19 0x8a4983 in demangle_path
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#20 0x8a488d in demangle_path
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#21 0x8a4983 in demangle_path
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#22 0x8a488d in demangle_path
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#23 0x8a4983 in demangle_path
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#24 0x8a488d in demangle_path
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#25 0x8a4983 in demangle_path
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#26 0x8a488d in demangle_path
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#27 0x8a4983 in demangle_path
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#28 0x8a488d in demangle_path
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#29 0x8a4983 in demangle_path
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#30 0x8a488d in demangle_path
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#31 0x8a4983 in demangle_path
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#32 0x8a488d in demangle_path
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#33 0x8a4983 in demangle_path
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#34 0x8a488d in demangle_path
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#35 0x8a4983 in demangle_path
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#36 0x8a488d in demangle_path
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#37 0x8a4983 in demangle_path
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#38 0x8a488d in demangle_path
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#39 0x8a4983 in demangle_path
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#40 0x8a488d in demangle_path
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#41 0x8a4983 in demangle_path
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#42 0x8a488d in demangle_path
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#43 0x8a4983 in demangle_path
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#44 0x8a488d in demangle_path
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#45 0x8a4983 in demangle_path
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#46 0x8a488d in demangle_path
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#47 0x8a4983 in demangle_path
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#48 0x8a488d in demangle_path
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#49 0x8a4983 in demangle_path
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#50 0x8a488d in demangle_path
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#51 0x8a4983 in demangle_path
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#52 0x8a488d in demangle_path
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#53 0x8a4983 in demangle_path
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#54 0x8a488d in demangle_path
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#55 0x8a4983 in demangle_path
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#56 0x8a488d in demangle_path
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#57 0x8a4983 in demangle_path
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#58 0x8a488d in demangle_path
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#59 0x8a4983 in demangle_path
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#60 0x8a488d in demangle_path
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#61 0x8a4983 in demangle_path
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#62 0x8a488d in demangle_path
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#63 0x8a4983 in demangle_path
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#64 0x8a488d in demangle_path
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#65 0x8a4983 in demangle_path
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#66 0x8a488d in demangle_path
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#67 0x8a4983 in demangle_path
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#68 0x8a488d in demangle_path
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#69 0x8a4983 in demangle_path
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#70 0x8a488d in demangle_path
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#71 0x8a4983 in demangle_path
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#72 0x8a488d in demangle_path
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#73 0x8a4983 in demangle_path
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#74 0x8a488d in demangle_path
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#75 0x8a4983 in demangle_path
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#76 0x8a488d in demangle_path
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#77 0x8a4983 in demangle_path
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#78 0x8a488d in demangle_path
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#79 0x8a4983 in demangle_path
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#80 0x8a488d in demangle_path
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#81 0x8a4983 in demangle_path
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#82 0x8a488d in demangle_path
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#83 0x8a4983 in demangle_path
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#84 0x8a488d in demangle_path
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#85 0x8a4983 in demangle_path
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#86 0x8a488d in demangle_path
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#87 0x8a4983 in demangle_path
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#88 0x8a488d in demangle_path
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#89 0x8a4983 in demangle_path
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#90 0x8a488d in demangle_path
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#91 0x8a4983 in demangle_path
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#92 0x8a488d in demangle_path
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#93 0x8a4983 in demangle_path
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#94 0x8a488d in demangle_path
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#95 0x8a4983 in demangle_path
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#96 0x8a488d in demangle_path
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#97 0x8a4983 in demangle_path
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#98 0x8a488d in demangle_path
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#99 0x8a4983 in demangle_path
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#100 0x8a488d in demangle_path
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#101 0x8a4983 in demangle_path
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#102 0x8a488d in demangle_path
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#103 0x8a4983 in demangle_path
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#104 0x8a488d in demangle_path
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#105 0x8a4983 in demangle_path
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#106 0x8a488d in demangle_path
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#107 0x8a4983 in demangle_path
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#108 0x8a488d in demangle_path
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#109 0x8a4983 in demangle_path
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#110 0x8a488d in demangle_path
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#111 0x8a4983 in demangle_path
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#112 0x8a488d in demangle_path
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#113 0x8a4983 in demangle_path
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#114 0x8a488d in demangle_path
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#115 0x8a4983 in demangle_path
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#116 0x8a488d in demangle_path
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#117 0x8a4983 in demangle_path
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#118 0x8a488d in demangle_path
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#119 0x8a4983 in demangle_path
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#120 0x8a488d in demangle_path
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#121 0x8a4983 in demangle_path
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#122 0x8a488d in demangle_path
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#123 0x8a4983 in demangle_path
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#124 0x8a488d in demangle_path
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#125 0x8a4983 in demangle_path
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#126 0x8a488d in demangle_path
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#127 0x8a4983 in demangle_path
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#128 0x8a488d in demangle_path
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#129 0x8a4983 in demangle_path
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#130 0x8a488d in demangle_path
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#131 0x8a4983 in demangle_path
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#132 0x8a488d in demangle_path
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#133 0x8a4983 in demangle_path
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#134 0x8a488d in demangle_path
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#135 0x8a4983 in demangle_path
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#136 0x8a488d in demangle_path
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#137 0x8a4983 in demangle_path
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#138 0x8a488d in demangle_path
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#139 0x8a4983 in demangle_path
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#140 0x8a488d in demangle_path
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#141 0x8a4983 in demangle_path
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#142 0x8a488d in demangle_path
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#143 0x8a4983 in demangle_path
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#144 0x8a488d in demangle_path
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#145 0x8a4983 in demangle_path
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#146 0x8a488d in demangle_path
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#147 0x8a4983 in demangle_path
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#237 0x8a4983 in demangle_path
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#238 0x8a488d in demangle_path
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#239 0x8a4983 in demangle_path
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#240 0x8a488d in demangle_path
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#241 0x8a4983 in demangle_path
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#242 0x8a488d in demangle_path
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#243 0x8a4983 in demangle_path
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#244 0x8a488d in demangle_path
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#245 0x8a4983 in demangle_path
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#246 0x8a488d in demangle_path
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#247 0x8a4983 in demangle_path
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#248 0x8a488d in demangle_path
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SUMMARY: AddressSanitizer: stack-overflow
/root/this-program/binutils-gdb/build/libiberty/../../libiberty/rust-demangle.c:98
in eat
==512814==ABORTING
POC
https://drive.google.com/file/d/1kqBV68VZxqnpR8gcrNej8-0BZhlbtJ5V/view?usp=sharing
Redit
Xiaoguo Li (CUPL)
Xudong Cao (UCAS)
