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CVE-2021-20197

Published: Mar 26, 2021Updated: Dec 3, 2025 Sources: CVE List NVD BDUCWE-59
6.3MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 77.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:HI:HA:N
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-59CWE-362

Affected Products

netapp
commercial·US
cloud backup
Hardware Firmware
ontap select deploy administration utility
Hardware Firmware
solidfire \& hci management node
Hardware Firmware
gnu
oss-project·USaka g. nu
binutils
OSS Libraries
Red Hat Inc.
commercial·USaka redhat, red hat
Red Hat Enterprise LinuxOn-premOS
Operating Systems / linux-distro
broadcom
commercial·USaka broadcom inc
brocade fabric operating system firmwareEmbeddedFirmware
ICS / OT / IoT / industrial-network
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
GNU General Public License
oss-project·USaka gnu gpl, gpl
GNU Binutils
OSS Libraries
and 2 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2021-20197?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

3 techniques
Collection
Discovery
Privilege Escalation
View detailed technique mapping

References

https://bugzilla.redhat.com/show_bug.cgi?id=1913743
bugzilla.redhat.com
https://security.gentoo.org/glsa/202208-30
security.gentoo.org
https://security.netapp.com/advisory/ntap-20210528-0009/
security.netapp.com
and 4 more references View all →

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