GNU libiberty Buffer Overflow

Published
Credit
Risk
2017.07.29
Marcel Böhme
High
CWE
CVE
Local
Remote
CWE-119
N/A
No
No

The attached program binary causes a buffer overflow in cplus-dem.c when it tries to demangle specially crafted function arguments in the binary. Both the buffer size as well as the buffer content are controlled from the binary.

objdump -x -C <file>
nm -C <file>

Tested on the following configurations
* 2.6.32-573.7.1.el6.x86_64 #1 SMP Tue Sep 22 22:00:00 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
* 4.1.12-boot2docker #1 SMP Tue Nov 3 06:03:36 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
* Binutils versions: 2.20 and 2.26

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69687

References:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69687


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