Link Following Affecting binutils package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-DEBIAN9-BINUTILS-1065549
  • published27 Jan 2021
  • disclosed26 Mar 2021

Introduced: 27 Jan 2021

CVE-2021-20197  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

There is no fixed version for Debian:9 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. See How to fix? for Debian:9 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.

CVSS Scores

version 3.1