Input validation error in BusyBox - CVE-2021-42375
Published: November 28, 2022
Vulnerability identifier: #VU69652
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-42375
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: busybox.net
Affected software:
BusyBox
BusyBox
Detailed vulnerability description
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the ash applet. A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.
How to mitigate CVE-2021-42375
Install updates from vendor's website.
Sources
- https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS/
- https://security.netapp.com/advisory/ntap-20211223-0002/