CVE-2021-42377
high-risk
Published 2021-11-15
An attacker-controlled pointer free in Busybox's hush applet leads to denial of service and possible code execution when processing a crafted shell command, due to the shell mishandling the &&& string. This may be used for remote code execution under rare conditions of filtered command input.
Do I need to act?
~
2.9% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (14)
Affected Vendors
References (10)
Third Party Advisory
https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-clar...
Third Party Advisory
https://security.netapp.com/advisory/ntap-20211223-0002/
Third Party Advisory
https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-clar...
Third Party Advisory
https://security.netapp.com/advisory/ntap-20211223-0002/
56
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
6/34 · Minimal
Exposure
18/34 · Moderate