CVE-2018-20623: Use After Free
First published: Mon Dec 31 2018(Updated: )
In GNU Binutils 2.31.1, there is a use-after-free in the error function in elfcomm.c when called from the process_archive function in readelf.c via a crafted ELF file.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU Binutils | =2.31.1 | |
| debian/binutils | 2.35.2-2 2.40-2 2.43.1-5 |
Remedy
https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=28e817cc440bce73691c03e01860089a0954a837
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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/106370
- https://sourceware.org/bugzilla/show_bug.cgi?id=24049
- https://support.f5.com/csp/article/K38336243
- https://usn.ubuntu.com/4336-1/
- https://launchpad.net/bugs/cve/CVE-2018-20623
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=28e817cc440bce73691c03e01860089a0954a837
- https://security-tracker.debian.org/tracker/CVE-2018-20623
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20623
- https://nvd.nist.gov/vuln/detail/CVE-2018-20623
- https://ubuntu.com/security/CVE-2018-20623
Frequently Asked Questions
What is CVE-2018-20623?
CVE-2018-20623 is a vulnerability in GNU Binutils 2.31.1 that allows a use-after-free exploit when processing a crafted ELF file.
How does CVE-2018-20623 affect GNU Binutils?
CVE-2018-20623 affects GNU Binutils 2.31.1 by causing a use-after-free issue in the elfcomm.c error function when called from the process_archive function in readelf.c.
How can I fix CVE-2018-20623 on Ubuntu Xenial?
On Ubuntu Xenial, you can fix CVE-2018-20623 by upgrading to binutils version 2.26.1-1ubuntu1~16.04.8 or higher.
How can I fix CVE-2018-20623 on Ubuntu Bionic?
On Ubuntu Bionic, you can fix CVE-2018-20623 by upgrading to binutils version 2.30-21ubuntu1~18.04.3 or higher.
How can I fix CVE-2018-20623 on Debian?
On Debian, you can fix CVE-2018-20623 by upgrading to binutils version 2.35.2-2, 2.40-2, or 2.41-5 or higher.
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