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Red Hat: CVE-2021-20197: Race window allows users to own arbitrary files (Multiple Advisories)

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Red Hat: CVE-2021-20197: Race window allows users to own arbitrary files (Multiple Advisories)

Severity
3
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:N)
Published
03/26/2021
Created
11/11/2021
Added
11/10/2021
Modified
12/15/2023

Description

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.

Solution(s)

  • redhat-upgrade-binutils
  • redhat-upgrade-binutils-debuginfo
  • redhat-upgrade-binutils-debugsource
  • redhat-upgrade-binutils-devel

References

  • CVE-2021-20197
  • RHSA-2021:4364

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