Multifunction Printer Net Viewer: Insufficiently Protected Credentials
CVE-2022-1026 is a high-severity insufficiently protected credentials vulnerability in Multifunction Printer Net Viewer from Kyocera, with a CVSS 3.1 base score of 8.6 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Multifunction Printer Net Viewer versions: 2S0_1000.005.0012S5_2000.002.505 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 14.6% chance of exploitation within 30 days, which is in the top 3.29% of all scored CVEs.
EPSS places it among the vulnerabilities most likely to be exploited soon.
What to do
- Check which version of Multifunction Printer Net Viewer you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on kyoceradocumentsolutions.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 |
|---|---|---|---|
| Kyocera | Multifunction Printer Net Viewer | 2S0_1000.005.0012S5_2000.002.505 and earlier | Not stated |
| Kyocera | Net Viewer | 2s0_1000.005.0012s5_2000.002.505 and earlier | Not stated |
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
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- 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:C/C:H/I:N/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.6 | High | CNA (rapid7.com) |
| CVSS 3.1 | 8.6 | High | NVD |
| CVSS 2.0 | 5.0 | Medium | NVD |
Official description
Kyocera multifunction printers running vulnerable versions of Net View unintentionally expose sensitive user information, including usernames and passwords, through an insufficiently protected address book export function.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Insufficiently Protected Credentials
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
How developers prevent this class of flaw
- Use an appropriate security mechanism to protect the credentials.
- Make appropriate use of cryptography to protect the credentials.
- Use industry standards to protect the credentials (e.g. LDAP, keystore, etc.).
More Insufficiently Protected Credentials vulnerabilities (CWE-522)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Technical write-ups (may include proof of concept)
- rapid7.com/blog/post/2022/03/29/cve-2022-1026-kyocera-net-view-address-book-exposure/Exploit, Third Party Advisory
Recent Insufficiently Protected Credentials vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 8.6 High severity
- 7.5 High severity
- 7.5 High severity
- 9.8 Critical severity
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