MMP: Deserialization of Untrusted Data
CVE-2022-0138 is a high-severity deserialization of untrusted data vulnerability in MMP from Airspan Networks, 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. 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 0.99% chance of exploitation within 30 days, higher than 63% of scored CVEs.
High severity with no evidence of exploitation so far.
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
- NoneNo data is disclosed.
- Integrity
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | CNA (hq.dhs.gov) |
| CVSS 3.1 | 7.5 | High | NVD |
| CVSS 2.0 | 5.0 | Medium | NVD |
Official description
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 has a deserialization function that does not validate or check the data, allowing arbitrary classes to be created.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How developers prevent this class of flaw
- If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
- When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
- Explicitly define a final object() to prevent deserialization.
More Deserialization of Untrusted Data vulnerabilities (CWE-502)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- 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
- 9.8 Critical severity
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Deserialization of Untrusted Data vulnerabilities
- 8.8 High severity
- 7.5 High severity
- 8.8 High severity
- 8.8 High severity
- 7.2 High severity
- 9.8 Critical severity
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