CVE-2017-15939: Null Pointer Dereference
First published: Fri Oct 27 2017(Updated: )
dwarf2.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.29, mishandles NULL files in a .debug_line file table, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted ELF file, related to concat_filename. NOTE: this issue is caused by an incomplete fix for CVE-2017-15023.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU Binutils | =2.29 | |
| 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=a54018b72d75abf2e74bf36016702da06399c1d9
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Reference Links
- http://www.securityfocus.com/bid/101613
- https://blogs.gentoo.org/ago/2017/10/24/binutils-null-pointer-dereference-in-concat_filename-dwarf2-c-incomplete-fix-for-cve-2017-15023/
- https://security.gentoo.org/glsa/201801-01
- https://sourceware.org/bugzilla/show_bug.cgi?id=22205
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=a54018b72d75abf2e74bf36016702da06399c1d9
- https://launchpad.net/bugs/cve/CVE-2017-15939
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=a54018b72d75abf2e74bf36016702da06399c1d9
- https://security-tracker.debian.org/tracker/CVE-2017-15939
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15939
- https://nvd.nist.gov/vuln/detail/CVE-2017-15939
- https://ubuntu.com/security/CVE-2017-15939
Frequently Asked Questions
What is CVE-2017-15939?
CVE-2017-15939 is a vulnerability in the Binary File Descriptor (BFD) library, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted ELF file.
How does CVE-2017-15939 impact Binutils?
CVE-2017-15939 impacts Binutils by mishandling NULL files in a .debug_line file table, leading to a vulnerability that can be exploited by remote attackers.
What is the severity of CVE-2017-15939?
The severity of CVE-2017-15939 is high.
What is the affected software?
The affected software is Binutils 2.26.1-1ubuntu1~16.04.8+, 2.29.90.20180122-1, 2.31.1-16, 2.35.2-2, 2.40-2, and 2.41-5.
How can I fix CVE-2017-15939?
To fix CVE-2017-15939, you should update to the recommended versions of Binutils provided by the Ubuntu or Debian repositories.
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