CVE-2021-20197

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.

References

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

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

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

https://security.gentoo.org/glsa/202208-30

Details

Risk Information

CVSS v2

CVSS v3