Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Busybox | Busybox | 1.33.0 |
| Fedoraproject | Fedora | 33 |
| Netapp | Cloud Backup | - |
| Netapp | Hci Management Node | - |
| Netapp | Solidfire | - |
| Netapp | H300S Firmware | - |
| Netapp | H300S | - |
| Netapp | H500S Firmware | - |
| Netapp | H500S | - |
| Netapp | H700S Firmware | - |
| Netapp | H700S | - |
| Netapp | H300E Firmware | - |
| Netapp | H300E | - |
| Netapp | H500E Firmware | - |
| Netapp | H500E | - |
| Netapp | H700E Firmware | - |
| Netapp | H700E | - |
| Netapp | H410S Firmware | - |
| Netapp | H410S | - |
Related Weaknesses (CWE)
References
- https://claroty.com/team82/research/unboxing-busybox-14-vulnerabilities-uncovere
- https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-clarThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.netapp.com/advisory/ntap-20211223-0002/Third Party Advisory
- https://claroty.com/team82/research/unboxing-busybox-14-vulnerabilities-uncovere
- https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-clarThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.netapp.com/advisory/ntap-20211223-0002/Third Party Advisory
FAQ
What is CVE-2021-42377?
CVE-2021-42377 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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...
How severe is CVE-2021-42377?
CVE-2021-42377 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-42377?
Check the references section above for vendor advisories and patch information. Affected products include: Busybox Busybox, Fedoraproject Fedora, Netapp Cloud Backup, Netapp Hci Management Node, Netapp Solidfire.