https://sourceware.org/bugzilla/show_bug.cgi?id=29946
Bug ID: 29946
Summary: Memroy leak in objdump
Product: binutils
Version: 2.40 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: pdeng21 at m dot fudan.edu.cn
Target Milestone: ---
Created attachment 14540
--> https://sourceware.org/bugzilla/attachment.cgi?id=14540&action=edit
PoC to replay the vulnerability
#Summary
There is a memory leak vulnerability in objdump, which can be triggered by a
craft elf file.
#Verification
git clone git://sourceware.org/git/binutils-gdb.git
CC="clang -fsanitize=address" CXX="clang++ -fsanitize=address" ./configure
--disable-shared && make -j$(nproc)
./binutils/objdump -S poc
#ASAN
./objdump: poc: no group info for section '.got.plt'
Section '.debug_info' has an invalid size: 0.
./objdump: Warning: .note.gnu.build-id data size is too big
poc: file format elf64-little
./objdump: poc: attempt to load strings from a non-string section (number 19)
./objdump: poc: .gnu.version_r invalid entry
./objdump: poc: bad value
=================================================================
==20184==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 112 byte(s) in 1 object(s) allocated from:
#0 0x4942ed in malloc (/binutils-gdb/binutils/objdump+0x4942ed)
#1 0x841388 in xmalloc /binutils-gdb/libiberty/./xmalloc.c:149:12
#2 0x4c6ec0 in display_object_bfd /binutils-gdb/binutils/./objdump.c
#3 0x4c6ec0 in display_any_bfd /binutils-gdb/binutils/./objdump.c:5825:5
#4 0x4c5664 in display_file /binutils-gdb/binutils/./objdump.c:5846:3
#5 0x4c5664 in main /binutils-gdb/binutils/./objdump.c:6254:6
#6 0x7ff5e6aa5c86 in __libc_start_main
/build/glibc-CVJwZb/glibc-2.27/csu/../csu/libc-start.c:310
SUMMARY: AddressSanitizer: 112 byte(s) leaked in 1 allocation(s).
#Envieonment
Ubuntu 18.04
clang 10.0.0
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