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CWE

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CVE-2021-20197

Published: Mar 26, 2021

Modified: Dec 3, 2025

PUBLISHED

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.

Vendor	Product	Versions
n/a	binutils	affected `binutils 2.35`

Weaknesses (CWE)

References

https://bugzilla.redhat.com/show_bug.cgi?id=1913743

x_refsource_MISC

https://sourceware.org/bugzilla/show_bug.cgi?id=26945

x_refsource_MISC

https://security.netapp.com/advisory/ntap-20210528-0009/

x_refsource_CONFIRM

vendor-advisory

x_refsource_GENTOO

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