SICAM A8000 CP-8031: Direct Request
CVE-2022-27480 is a high-severity direct request vulnerability in SICAM A8000 CP-8031 from Siemens, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected SICAM A8000 CP-8031 versions: All versions < V4.80. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 2.48% chance of exploitation within 30 days, higher than 85% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Sicam A8000 Cp-8031 Firmware to 4.80 or a later version.
- Update Sicam A8000 Cp-8050 Firmware to 4.80 or a later version.
- Read the advisory on cert-portal.siemens.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Siemens | SICAM A8000 CP-8031 | All versions < V4.80 | Not stated |
| Siemens | SICAM A8000 CP-8050 | All versions < V4.80 | Not stated |
| Siemens | Sicam A8000 Cp-8031 Firmware | before 4.80 | 4.80 |
| Siemens | Sicam A8000 Cp-8050 Firmware | before 4.80 | 4.80 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | NVD |
| CVSS 2.0 | 5.0 | Medium | NVD |
Official description
A vulnerability has been identified in SICAM A8000 CP-8031 (All versions < V4.80), SICAM A8000 CP-8050 (All versions < V4.80). Affected devices do not require an user to be authenticated to access certain files. This could allow unauthenticated attackers to download these files.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Direct Request
The web application does not adequately enforce appropriate authorization on all restricted URLs, scripts, or files.
How developers prevent this class of flaw
- Apply appropriate access control authorizations for each access to all restricted URLs, scripts or files.
- Consider using MVC based frameworks such as Struts.
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- packetstormsecurity.com/files/166743/Siemens-A8000-CP-8050-CP-8031-SICAM-WEB-Missing-File-Download-Missing-Au…Third Party Advisory, VDB Entry
- seclists.org/fulldisclosure/2022/Apr/20Mailing List, Third Party Advisory
Recent Direct Request vulnerabilities
- 7.5 High severity
- 5.3 Medium severity
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