CVE-2021-34995
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Commvault CommCell 11.22.22.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 68.9%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Commvault CommCell 11.22.22. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the DownloadCenterUploadHandler class. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this vulnerability to execute code in the context of NETWORK SERVICE. Was ZDI-CAN-13756.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 68.86% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- commvault/commcell
- Source
- zdi-disclosures@trendmicro.com
References
- https://www.zerodayinitiative.com/advisories/ZDI-21-1330/Third Party Advisory, VDB Entry
- https://www.zerodayinitiative.com/advisories/ZDI-21-1330/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.