CVE-2018-18607: Null Pointer Dereference
First published: Tue Oct 23 2018(Updated: )
An issue was discovered in elf_link_input_bfd in elflink.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31. There is a NULL pointer dereference in elf_link_input_bfd when used for finding STT_TLS symbols without any TLS section. 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 2.43.1-3 2.43.1-5 |
Remedy
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=102def4da826b3d9e169741421e5e67e8731909a
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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=23805
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=102def4da826b3d9e169741421e5e67e8731909a
- https://usn.ubuntu.com/4336-1/
- https://launchpad.net/bugs/cve/CVE-2018-18607
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=102def4da826b3d9e169741421e5e67e8731909a
- https://security-tracker.debian.org/tracker/CVE-2018-18607
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18607
- https://nvd.nist.gov/vuln/detail/CVE-2018-18607
- https://ubuntu.com/security/CVE-2018-18607
Frequently Asked Questions
What is CVE-2018-18607?
CVE-2018-18607 is a vulnerability in the Binary File Descriptor (BFD) library in GNU Binutils 2.31 that leads to a NULL pointer dereference.
How does CVE-2018-18607 affect me?
If you are using affected versions of binutils on Ubuntu Xenial (16.04), Ubuntu Bionic (18.04), or Debian, you may be vulnerable to this issue.
How can I fix CVE-2018-18607?
To fix CVE-2018-18607, update your binutils package to the recommended version provided by your operating system (Ubuntu or Debian).
Where can I find more information about CVE-2018-18607?
You can find more information about CVE-2018-18607 on the Sourceware bugzilla and gitweb, as well as the SecurityFocus website.
What is CWE-476?
CWE-476 is a Common Weakness Enumeration category that refers to NULL Pointer Dereference vulnerabilities.
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