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Gentoo Linux: CVE-2021-20197: GNU Binutils: Multiple Vulnerabilities

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Gentoo Linux: CVE-2021-20197: GNU Binutils: Multiple Vulnerabilities

Severity
3
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:N)
Published
03/26/2021
Created
08/29/2022
Added
08/16/2022
Modified
02/14/2023

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)

  • gentoo-linux-upgrade-sys-devel-binutils
  • gentoo-linux-upgrade-sys-libs-binutils-libs

References

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