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There is an invalid free in Action::TaskFactory::cleanup funtion of actions.cpp in exiv2. A crafted input will lead to remote denial of service attack.
Created attachment 1297689[details]
Triggered by "./exiv2 $POC"
Description of problem:
There is an invalid free in Action::TaskFactory::cleanup funtion of actions.cpp in exiv2. A crafted input will lead to remote denial of service attack.
Version-Release number of selected component (if applicable):
<=latest version
How reproducible:
./exiv2 POC3
Steps to Reproduce:
The output information is as follows:
$./exiv2 POC3
*** Error in `/real/exiv2/bin/.libs/lt-exiv2': malloc(): memory corruption: 0x0000000000bac250 ***
Aborted
ASAN output information:
$./exiv2 POC3
Error: Directory Image, entry 0x0144 has invalid size 4294967295*8; skipping entry.
File name : POC3
File size : 28 Bytes
MIME type : image/tiff
Image size : 0 x 0
POC3 No Exif data found in the file
=================================================================
==92908==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x60200000ed90 in thread T0
#0 0x4e1c92 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1c92)
#1 0x51515c (/home/icy/real/exiv2-asan/install/bin/exiv2+0x51515c)
#2 0x4e2fe6 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2fe6)
#3 0x7fbeb19e9abf (/lib/x86_64-linux-gnu/libc.so.6+0x20abf)
#4 0x43b288 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288)
0x60200000ed90 is located 0 bytes inside of 1229389824-byte region [0x60200000ed90,0x60204947ed90)
freed by thread T0 here:
==92908==AddressSanitizer CHECK failed: /build/llvm-toolchain-3.6-18MJNr/llvm-toolchain-3.6-3.6.2/projects/compiler-rt/lib/asan/asan_allocator.cc:668 "((res.trace)) != (0)" (0x0, 0x0)
#0 0x4c9dd4 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c9dd4)
#1 0x4d0751 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4d0751)
#2 0x43b8c8 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b8c8)
#3 0x4c5d70 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c5d70)
#4 0x4c6b9f (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c6b9f)
#5 0x43f5d5 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43f5d5)
#6 0x43bc87 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43bc87)
#7 0x4e1d51 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1d51)
#8 0x51515c (/home/icy/real/exiv2-asan/install/bin/exiv2+0x51515c)
#9 0x4e2fe6 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2fe6)
#10 0x7fbeb19e9abf (/lib/x86_64-linux-gnu/libc.so.6+0x20abf)
#11 0x43b288 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288)
The GDB debugging information is as follows:
(gdb) set args POC3
(gdb) r
...
(gdb)
Continuing.
Breakpoint 2, Action::TaskFactory::cleanup (this=<optimized out>) at actions.cpp:194
194 delete i->second;
(gdb) bt
#0 Action::TaskFactory::cleanup (this=<optimized out>) at actions.cpp:194
#1 0x00000000004e2fe7 in main (argc=<optimized out>, argv=<optimized out>) at exiv2.cpp:174
(gdb) s
=================================================================
==114915==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x60200000edb0 in thread T0
#0 0x4e1c92 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1c92)
#1 0x51515c (/home/icy/real/exiv2-asan/install/bin/exiv2+0x51515c)
#2 0x4e2fe6 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2fe6)
#3 0x7ffff5e29abf (/lib/x86_64-linux-gnu/libc.so.6+0x20abf)
#4 0x43b288 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288)
0x60200000edb0 is located 0 bytes inside of 1229389824-byte region [0x60200000edb0,0x60204947edb0)
freed by thread T0 here:
==114915==AddressSanitizer CHECK failed: /build/llvm-toolchain-3.6-18MJNr/llvm-toolchain-3.6-3.6.2/projects/compiler-rt/lib/asan/asan_allocator.cc:668 "((res.trace)) != (0)" (0x0, 0x0)
#0 0x4c9dd4 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c9dd4)
#1 0x4d0751 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4d0751)
#2 0x43b8c8 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b8c8)
#3 0x4c5d70 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c5d70)
#4 0x4c6b9f (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c6b9f)
#5 0x43f5d5 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43f5d5)
#6 0x43bc87 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43bc87)
#7 0x4e1d51 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1d51)
#8 0x51515c (/home/icy/real/exiv2-asan/install/bin/exiv2+0x51515c)
#9 0x4e2fe6 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2fe6)
#10 0x7ffff5e29abf (/lib/x86_64-linux-gnu/libc.so.6+0x20abf)
#11 0x43b288 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288)
[Inferior 1 (process 114915) exited with code 01]
This vulnerability was triggered in Action::TaskFactory::cleanup() at actions.cpp:194. Line 194 attempting free on address which was not malloc()-ed: 0x60200000edb0
189 void TaskFactory::cleanup()
190 {
191 if (instance_ != 0) {
192 Registry::iterator e = registry_.end();
193 for (Registry::iterator i = registry_.begin(); i != e; ++i) {
194 delete i->second;
195 }
196 delete instance_;
197 instance_ = 0;
198 }
199 } //TaskFactory::cleanup
Actual results:
crash
Expected results:
crash
Additional info:
This vulnerability is detected by team OWL337, with our custom fuzzer collAFL. Please contact ganshuitao and chaoz.cn if you need more info about the team, the tool or the vulnerability.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHSA-2019:2101
Created attachment 1297689 [details] Triggered by "./exiv2 $POC" Description of problem: There is an invalid free in Action::TaskFactory::cleanup funtion of actions.cpp in exiv2. A crafted input will lead to remote denial of service attack. Version-Release number of selected component (if applicable): <=latest version How reproducible: ./exiv2 POC3 Steps to Reproduce: The output information is as follows: $./exiv2 POC3 *** Error in `/real/exiv2/bin/.libs/lt-exiv2': malloc(): memory corruption: 0x0000000000bac250 *** Aborted ASAN output information: $./exiv2 POC3 Error: Directory Image, entry 0x0144 has invalid size 4294967295*8; skipping entry. File name : POC3 File size : 28 Bytes MIME type : image/tiff Image size : 0 x 0 POC3 No Exif data found in the file ================================================================= ==92908==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x60200000ed90 in thread T0 #0 0x4e1c92 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1c92) #1 0x51515c (/home/icy/real/exiv2-asan/install/bin/exiv2+0x51515c) #2 0x4e2fe6 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2fe6) #3 0x7fbeb19e9abf (/lib/x86_64-linux-gnu/libc.so.6+0x20abf) #4 0x43b288 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288) 0x60200000ed90 is located 0 bytes inside of 1229389824-byte region [0x60200000ed90,0x60204947ed90) freed by thread T0 here: ==92908==AddressSanitizer CHECK failed: /build/llvm-toolchain-3.6-18MJNr/llvm-toolchain-3.6-3.6.2/projects/compiler-rt/lib/asan/asan_allocator.cc:668 "((res.trace)) != (0)" (0x0, 0x0) #0 0x4c9dd4 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c9dd4) #1 0x4d0751 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4d0751) #2 0x43b8c8 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b8c8) #3 0x4c5d70 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c5d70) #4 0x4c6b9f (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c6b9f) #5 0x43f5d5 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43f5d5) #6 0x43bc87 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43bc87) #7 0x4e1d51 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1d51) #8 0x51515c (/home/icy/real/exiv2-asan/install/bin/exiv2+0x51515c) #9 0x4e2fe6 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2fe6) #10 0x7fbeb19e9abf (/lib/x86_64-linux-gnu/libc.so.6+0x20abf) #11 0x43b288 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288) The GDB debugging information is as follows: (gdb) set args POC3 (gdb) r ... (gdb) Continuing. Breakpoint 2, Action::TaskFactory::cleanup (this=<optimized out>) at actions.cpp:194 194 delete i->second; (gdb) bt #0 Action::TaskFactory::cleanup (this=<optimized out>) at actions.cpp:194 #1 0x00000000004e2fe7 in main (argc=<optimized out>, argv=<optimized out>) at exiv2.cpp:174 (gdb) s ================================================================= ==114915==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x60200000edb0 in thread T0 #0 0x4e1c92 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1c92) #1 0x51515c (/home/icy/real/exiv2-asan/install/bin/exiv2+0x51515c) #2 0x4e2fe6 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2fe6) #3 0x7ffff5e29abf (/lib/x86_64-linux-gnu/libc.so.6+0x20abf) #4 0x43b288 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288) 0x60200000edb0 is located 0 bytes inside of 1229389824-byte region [0x60200000edb0,0x60204947edb0) freed by thread T0 here: ==114915==AddressSanitizer CHECK failed: /build/llvm-toolchain-3.6-18MJNr/llvm-toolchain-3.6-3.6.2/projects/compiler-rt/lib/asan/asan_allocator.cc:668 "((res.trace)) != (0)" (0x0, 0x0) #0 0x4c9dd4 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c9dd4) #1 0x4d0751 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4d0751) #2 0x43b8c8 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b8c8) #3 0x4c5d70 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c5d70) #4 0x4c6b9f (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4c6b9f) #5 0x43f5d5 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43f5d5) #6 0x43bc87 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43bc87) #7 0x4e1d51 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1d51) #8 0x51515c (/home/icy/real/exiv2-asan/install/bin/exiv2+0x51515c) #9 0x4e2fe6 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2fe6) #10 0x7ffff5e29abf (/lib/x86_64-linux-gnu/libc.so.6+0x20abf) #11 0x43b288 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288) [Inferior 1 (process 114915) exited with code 01] This vulnerability was triggered in Action::TaskFactory::cleanup() at actions.cpp:194. Line 194 attempting free on address which was not malloc()-ed: 0x60200000edb0 189 void TaskFactory::cleanup() 190 { 191 if (instance_ != 0) { 192 Registry::iterator e = registry_.end(); 193 for (Registry::iterator i = registry_.begin(); i != e; ++i) { 194 delete i->second; 195 } 196 delete instance_; 197 instance_ = 0; 198 } 199 } //TaskFactory::cleanup Actual results: crash Expected results: crash Additional info: This vulnerability is detected by team OWL337, with our custom fuzzer collAFL. Please contact ganshuitao and chaoz.cn if you need more info about the team, the tool or the vulnerability.