Wifi-repeater Firmware: Direct Request
CVE-2022-34571 is a high-severity direct request vulnerability in Wifi-repeater Firmware from WAVLINK, with a CVSS 3.1 base score of 8.0 out of 10. It can be exploited from the same local network by an attacker with a low-privileged account, without any action from a user. Affected Wifi-repeater Firmware versions: rpta2-77w.m4300.01.gd.2017sep19. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.87% chance of exploitation within 30 days, higher than 59% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Wifi-repeater Firmware you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on wavlink.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| WAVLINK | Wifi-repeater Firmware | rpta2-77w.m4300.01.gd.2017sep19 | Not stated |
Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- AdjacentThe attacker must be on the same local network segment.
- 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:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
Official description
An access control issue in Wavlink WiFi-Repeater RPTA2-77W.M4300.01.GD.2017Sep19 allows attackers to obtain the system key information and execute arbitrary commands via accessing the page syslog.shtml.
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
Advisories
Technical write-ups (may include proof of concept)
- github.com/pghuanghui/CVE_Request/blob/main/WiFi-Repeater/WiFi-Repeater_syslog.shtml.assets/WiFi-Repeater_sys…Exploit, Third Party Advisory
Recent Direct Request vulnerabilities
- 7.5 High severity
- 8.8 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 8.8 High severity
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