CVE-2021-20197 — Vulnetix

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CVE-2021-20197 PUBLISHED

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.

EPSS 0.12% · 30.2th percentile

Risk Scores

EPSS Score

0.12%

30.2th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:Pro:20.04:LTS	binutils	2.34-1ubuntu1, 2.34-6ubuntu1.11+esm2, 2.34-6ubuntu1.11+esm1
Ubuntu:Pro:18.04:LTS	binutils	2.30-8ubuntu1, 2.30-9ubuntu1, 2.30-21ubuntu1~18.04.9+esm1
Ubuntu:Pro:14.04:LTS	binutils	0, 2.23.52.20130913-0ubuntu1, 2.23.90.20131017-1ubuntu1
Ubuntu:Pro:16.04:LTS	binutils	2.26.1-1ubuntu1~16.04.8+esm14, 2.26.1-1ubuntu1~16.04.8+esm13, 2.26.1-1ubuntu1~16.04.8+esm12

Timeline

Mar 26, 2021 CVE Published
Apr 14, 2021 EPSS Score
Jun 22, 2021 EPSS Score
Aug 23, 2021 EPSS Score
Oct 24, 2021 EPSS Score
Jan 6, 2022 EPSS Score
Feb 4, 2022 EPSS Score
Feb 25, 2022 EPSS Score
Apr 1, 2022 EPSS Score
Apr 28, 2022 EPSS Score
Jun 29, 2022 EPSS Score
Aug 31, 2022 EPSS Score

References

https://ubuntu.com/security/CVE-2021-20197 third-party-advisory
https://www.cve.org/CVERecord?id=CVE-2021-20197 third-party-advisory
Multiples vulnérabilités dans VMware Tanzu advisory

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