CVE-2021-42373
MEDIUMCVSS 5.5/10EPSS 0.38%
Last modified
CVE-2021-42373 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A NULL pointer dereference in Busybox's man applet leads to denial of service when a section name is supplied but no page argument is given. EPSS estimates a 0.38% chance of exploitation in the next 30 days.
Description
A NULL pointer dereference in Busybox's man applet leads to denial of service when a section name is supplied but no page argument is given
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Busybox | Busybox | 1.33.0 |
| Busybox | Busybox | 1.33.1 |
| Fedoraproject | Fedora | 33 |
| Fedoraproject | Fedora | 34 |
| Netapp | Cloud Backup | All versions |
| Netapp | Hci Management Node | All versions |
| Netapp | Solidfire | All versions |
| Netapp | H300s Firmware | All versions |
| Netapp | H500s Firmware | All versions |
| Netapp | H700s Firmware | All versions |
| Netapp | H300e Firmware | All versions |
| Netapp | H500e Firmware | All versions |
| Netapp | H700e Firmware | All versions |
| Netapp | H410s Firmware | All versions |
References
- https://security.netapp.com/advisory/ntap-20211223-0002/Third Party Advisory
- https://security.netapp.com/advisory/ntap-20211223-0002/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-42373?
A NULL pointer dereference in Busybox's man applet leads to denial of service when a section name is supplied but no page argument is given
How severe is CVE-2021-42373?
CVE-2021-42373 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.
How do I fix CVE-2021-42373?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-42367The Variation Swatches for WooCommerce WordPress plugin is v…5.4
- CVE-2021-42369Imagicle Application Suite (for Cisco UC) before 2021.Summer…8.8
- CVE-2021-4237Rejected reason: reserved but not needed
- CVE-2021-42370A password mismanagement situation exists in XoruX LPAR2RRD …7.5
- CVE-2021-42371lpar2rrd is a hardcoded system account in XoruX LPAR2RRD and…9.8
- CVE-2021-42372A shell command injection in the HW Events SNMP community in…8.8
- CVE-2021-42374An out-of-bounds heap read in Busybox's unlzma applet leads …5.3
- CVE-2021-42375An incorrect handling of a special element in Busybox's ash …5.5
- CVE-2021-42376A NULL pointer dereference in Busybox's hush applet leads to…5.5
- CVE-2021-42377An attacker-controlled pointer free in Busybox's hush applet…9.8
- CVE-2021-42378A use-after-free in Busybox's awk applet leads to denial of …7.2
- CVE-2021-42379A use-after-free in Busybox's awk applet leads to denial of …7.2
Are you affected by CVE-2021-42373?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST