UDR-JA1604/UDR-JA1608/UDR-JA1616: Improper Authentication
CVE-2022-44620 is a high-severity improper authentication vulnerability in UDR-JA1604/UDR-JA1608/UDR-JA1616 from UNIMO Technology, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected UDR-JA1604/UDR-JA1608/UDR-JA1616 versions: firmware versions 71x10.1.107112.43A and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.94% chance of exploitation within 30 days, higher than 62% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Udr-ja1604 Firmware to 71x10.1.107114.43a or a later version.
- Update Udr-ja1608 Firmware to 71x10.1.107114.43a or a later version.
- Update Udr-ja1616 Firmware to 71x10.1.107114.43a or a later version.
- Read the advisory on unimo.co.jp for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| UNIMO Technology | UDR-JA1604/UDR-JA1608/UDR-JA1616 | firmware versions 71x10.1.107112.43A and earlier | Not stated |
| Unimo | Udr-ja1604 Firmware | before 71x10.1.107114.43a | 71x10.1.107114.43a |
| Unimo | Udr-ja1608 Firmware | before 71x10.1.107114.43a | 71x10.1.107114.43a |
| Unimo | Udr-ja1616 Firmware | before 71x10.1.107114.43a | 71x10.1.107114.43a |
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
- LowA basic user account is enough.
- 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:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.8 | High | NVD |
| CVSS 3.1 | 8.8 | High | CISA (ADP) |
Official description
Improper authentication vulnerability in UDR-JA1604/UDR-JA1608/UDR-JA1616 firmware versions 71x10.1.107112.43A and earlier allows a remote authenticated attacker to execute an arbitrary OS command on the device or alter the device settings.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How developers prevent this class of flaw
- Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- jvn.jp/en/vu/JVNVU94514762/index.htmlThird Party Advisory
Other vulnerabilities in UDR-JA1604/UDR-JA1608/UDR-JA1616
- 8.8 High severity
- 8.8 High severity
Recent Improper Authentication vulnerabilities
- 9.8 Critical severity
- 8.8 High severity
- 9.8 Critical severity
- 8.1 High severity
- 8.8 High severity
- 8.8 High severity
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