Vulnerability in Kaseya Unitrends Backup
CVE-2021-43034
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. A world writable file allowed local users to execute arbitrary code as the user apache, leading to privilege escalation.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- helpdesk.kaseya.com/hc/en-gb/articles/4412762258961 (Vendor Advisory)
- www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part… (Exploit, Third Party Advisory)
- www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-43034?
- CVE-2021-43034 is a high-severity vulnerability in Kaseya Unitrends Backup, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2021-12-06.
- How severe is CVE-2021-43034?
- High severity. CVSS v3 base score is 7.8 out of 10.