CWE
416
Advisory Published
Updated

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 SoftwareAffected VersionHow to fix
GNU Binutils=2.31.1
debian/binutils
2.35.2-2
2.40-2
2.43.1-3
2.43.1-5

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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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