CVE-2018-18606: Null Pointer Dereference
First published: Tue Oct 23 2018(Updated: )
An issue was discovered in the merge_strings function in merge.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31. There is a NULL pointer dereference in _bfd_add_merge_section when attempting to merge sections with large alignments. A specially crafted ELF allows remote attackers to cause a denial of service, as demonstrated by ld.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU Binutils | =2.31 | |
| Debian Debian Linux | =7.0 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| NetApp Data ONTAP | ||
| debian/binutils | 2.35.2-2 2.40-2 2.43.1-5 |
Remedy
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=45a0eaf77022963d639d6d19871dbab7b79703fc
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00072.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00008.html
- http://www.securityfocus.com/bid/105754
- https://security.netapp.com/advisory/ntap-20190307-0003/
- https://sourceware.org/bugzilla/show_bug.cgi?id=23806
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=45a0eaf77022963d639d6d19871dbab7b79703fc
- https://usn.ubuntu.com/4336-1/
- https://launchpad.net/bugs/cve/CVE-2018-18606
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=45a0eaf77022963d639d6d19871dbab7b79703fc
- https://security-tracker.debian.org/tracker/CVE-2018-18606
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18606
- https://nvd.nist.gov/vuln/detail/CVE-2018-18606
- https://ubuntu.com/security/CVE-2018-18606
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2018-18606.
What is the affected software?
The affected software is Binutils.
How does the vulnerability occur?
The vulnerability occurs in the merge_strings function in merge.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31.
What is the severity of CVE-2018-18606?
The severity of CVE-2018-18606 is not specified.
Is there a fix for CVE-2018-18606?
Yes, there are fixes available for different versions of Binutils.
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