Solar-log 250 Firmware: Hidden Functionality
CVE-2022-47767 is a critical-severity hidden functionality vulnerability in Solar-log 250 Firmware from Solar-log, 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 versions 4.2.8_117, 5.1.2_156 as the first without the flaw, so updating Solar-log 250 Firmware to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1.26% chance of exploitation within 30 days, higher than 70% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Solar-log 250 Firmware to 4.2.8_117 or 5.1.2_156, whichever matches your release line, or a later version.
- Update Solar-log 300 Firmware to 4.2.8_117 or 5.1.2_156, whichever matches your release line, or a later version.
- Update Solar-log 500 Firmware to 4.2.8_117 or 5.1.2_156, whichever matches your release line, or a later version.
- Read the advisory on solar-log.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 |
|---|---|---|---|
| Solar-log | Solar-log 250 Firmware | before 4.2.8_117; 5.0.0 up to, but not including, 5.1.2_156 | 4.2.8_117, 5.1.2_156 |
| Solar-log | Solar-log 300 Firmware | before 4.2.8_117; 5.0.0 up to, but not including, 5.1.2_156 | 4.2.8_117, 5.1.2_156 |
| Solar-log | Solar-log 500 Firmware | before 4.2.8_117; 5.0.0 up to, but not including, 5.1.2_156 | 4.2.8_117, 5.1.2_156 |
| Solar-log | Solar-log 800e Firmware | before 4.2.8_117; 5.0.0 up to, but not including, 5.1.2_156 | 4.2.8_117, 5.1.2_156 |
| Solar-log | Solar-log 1000 Firmware | before 4.2.8_117; 5.0.0 up to, but not including, 5.1.2_156 | 4.2.8_117, 5.1.2_156 |
| Solar-log | Solar-log 1000 Pm+ Firmware | before 4.2.8_117; 5.0.0 up to, but not including, 5.1.2_156 | 4.2.8_117, 5.1.2_156 |
| Solar-log | Solar-log 1200 Firmware | before 4.2.8_117; 5.0.0 up to, but not including, 5.1.2_156 | 4.2.8_117, 5.1.2_156 |
| Solar-log | Solar-log 2000 Firmware | before 4.2.8_117; 5.0.0 up to, but not including, 5.1.2_156 | 4.2.8_117, 5.1.2_156 |
| Solar-log | Solar-log 50 Firmware | before 4.2.8_117; 5.0.0 up to, but not including, 5.1.2_156 | 4.2.8_117, 5.1.2_156 |
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
- 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 | 9.8 | Critical | NVD |
| CVSS 3.1 | 9.8 | Critical | CISA (ADP) |
Official description
A backdoor in Solar-Log Gateway products allows remote access via web panel gaining super administration privileges to the attacker. This affects Solar-Log devices that use firmware version v4.2.7 up to v5.1.1 (included). This does not exist in SL 200, 500, 1000 / fixed in 4.2.8 for SL 250, 300, 1200, 2000, SL 50 Gateway / fixed in 5.1.2 / 6.0.0 for SL Base.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Hidden Functionality
The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators.
How developers prevent this class of flaw
- Always verify the integrity of the product that is being installed.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
- solar-log.com/en/support/firmware-database-1
- swascan.com/security-advisory-solar-log/Exploit, Third Party Advisory
Recent Hidden Functionality vulnerabilities
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
- 6.7 Medium severity
Samsung Mobile Devices Unspecified Exploited
Spotted an error? Tell us.