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Link Following Affecting binutils package, versions *

low

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High
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NVD
6.3 medium
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SUSE
6.3 medium
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Red Hat
4.2 medium

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  • Snyk ID SNYK-DEBIAN11-BINUTILS-1065551
  • published 27 Jan 2021
  • disclosed 26 Mar 2021
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Introduced: 27 Jan 2021

CVE-2021-20197 Open this link in a new tab
CWE-59 Open this link in a new tab

How to fix?

There is no fixed version for Debian:11 binutils.

NVD Description

Note: Versions mentioned in the description apply only to the upstream binutils package and not the binutils package as distributed by Debian:11. See How to fix? for Debian:11 relevant fixed versions and status.

There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.