CVE-2021-20197

Summary

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.

Affected Software

Weaknesses

• CWE-59: CWE-59

ADP Enrichment

CVE Program Container

Additional 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

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

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

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