CVE-2021-34992
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS 6.10.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS 6.10. Authentication is required to exploit this vulnerability. The specific flaw exists within Composite.dll. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-14740.
- 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
- 4.27% probability · 91th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- orckestra/c1 cms
- Source
- zdi-disclosures@trendmicro.com
References
- https://github.com/Orckestra/C1-CMS-Foundation/releases/tag/v6.11Patch, Release Notes, Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1304/Third Party Advisory, VDB Entry
- https://github.com/Orckestra/C1-CMS-Foundation/releases/tag/v6.11Patch, Release Notes, Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1304/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.