MMP: Server-Side Request Forgery
CVE-2022-21215 is a critical-severity server-side request forgery vulnerability in MMP from Airspan Networks, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version v1.0.3 as the first without the flaw, so updating MMP to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1.41% chance of exploitation within 30 days, higher than 73% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update MMP to v1.0.3 or a later version.
- Update PTP C-series to v2.8.6.1 or a later version.
- Update PTMP C-series and A5x to v2.5.4.1 or a later version.
- 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 |
|---|---|---|---|
| Airspan Networks | MMP | before v1.0.3 | v1.0.3 |
| Airspan Networks | PTP C-series | before v2.8.6.1 | v2.8.6.1 |
| Airspan Networks | PTMP C-series and A5x | before v2.5.4.1 | v2.5.4.1 |
| Airspan | Mimosa Management Platform | before 1.0.3 | 1.0.3 |
| Airspan | C6x Firmware | before 2.8.6.1 | 2.8.6.1 |
| Airspan | C5x Firmware | before 2.8.6.1 | 2.8.6.1 |
| Airspan | C5c Firmware | before 2.8.6.1 | 2.8.6.1 |
| Airspan | A5x Firmware | before 2.5.4.1 | 2.5.4.1 |
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
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 10.0 | Critical | CNA (hq.dhs.gov) |
| CVSS 3.1 | 9.8 | Critical | NVD |
| CVSS 2.0 | 10.0 | High | NVD |
Official description
This vulnerability could allow an attacker to force the server to create and execute a web request granting access to backend APIs that are only accessible to the Mimosa MMP server, or request pages that could perform some actions themselves. The attacker could force the server into accessing routes on those cloud-hosting platforms, accessing secret keys, changing configurations, etc. Affecting MMP: All versions prior to v1.0.3, PTP C-series: Device versions prior to v2.8.6.1, and PTMP C-series and A5x: Device versions prior to v2.5.4.1.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Server-Side Request Forgery
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
How developers prevent this class of flaw
- If there is a known list of applications, IP, hostname, and/or domains to which the product is allowed to communicate, then use allowlists to ensure that outgoing requests are restricted to these known entities. The allowlists could be in the application code or possibly enforced by firewalls or network segmentation.
- If the product is expected to be able to connect to arbitrary IP addresses or domains, consider using a denylist that includes private network addresses, internal domain names, etc. The denylist could be in the application code or possibly enforced by firewalls or network segmentation.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- cisa.gov/uscert/ics/advisories/icsa-22-034-02Third Party Advisory, US Government Resource
Other vulnerabilities in MMP
- 9.8 Critical severity
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 7.5 High severity
Recent Server-Side Request Forgery vulnerabilities
- 8.8 High severity
- 7.5 High severity
- 8.2 High severity
- 8.8 High severity
- 7.1 High severity
- 7.5 High severity
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