The swap_std_reloc_in function in aoutx.h in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, allows remote attackers to cause a denial of service (aout_32_swap_std_reloc_out NULL pointer dereference and application crash) via a crafted ELF file, as demonstrated by objcopy.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Binutils | Gnu | 2.30 (including) | 2.30 (including) |
| Red Hat Enterprise Linux 7 | RedHat | binutils-0:2.27-34.base.el7 | * |
| Binutils | Ubuntu | artful | * |
| Binutils | Ubuntu | esm-infra-legacy/trusty | * |
| Binutils | Ubuntu | esm-infra/xenial | * |
| Binutils | Ubuntu | precise/esm | * |
| Binutils | Ubuntu | trusty | * |
| Binutils | Ubuntu | trusty/esm | * |
| Binutils | Ubuntu | upstream | * |
| Binutils | Ubuntu | xenial | * |
Potential Mitigations
References
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00072.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00008.html
- https://access.redhat.com/errata/RHBA-2019:0327
- https://access.redhat.com/errata/RHSA-2018:3032
- https://security.gentoo.org/glsa/201811-17
- https://sourceware.org/bugzilla/show_bug.cgi?id=22887
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=116acb2c268c89c89186673a7c92620d21825b25
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00072.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00008.html
- https://access.redhat.com/errata/RHBA-2019:0327
- https://access.redhat.com/errata/RHSA-2018:3032
- https://security.gentoo.org/glsa/201811-17
- https://sourceware.org/bugzilla/show_bug.cgi?id=22887
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=116acb2c268c89c89186673a7c92620d21825b25