PIN/prompt bypass on the secondscreen.gateway service allows access to the SSAP API without user interaction
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-639.
Summary
A prompt bypass exists in the secondscreen.gateway service running on webOS version 4 through 7. An attacker can create a privileged account without asking the user for the security PIN. Full versions and TV models affected: webOS 4.9.7 - 5.30.40 running on LG43UM7000PLA webOS 5.5.0 - 04.50.51 running on OLED55CXPUA webOS 6.3.3-442 (kisscurl-kinglake) - 03.36.50 running on OLED48C1PUB webOS 7.3.1-43 (mullet-mebin) - 03.33.85 running on OLED55A23LA
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| LG | WebOS | 4.9.7; 5.5.0; 6.3.3-442; 7.3.1-43 | — | No fix listed | CNA |
- WebOS VendorLG Affected 4.9.7; 5.5.0; 6.3.3-442; 7.3.1-43 Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:lg:webos:4.9.7:*:*:*:*:*:*:* | 4.9.7 | Vulnerable | LG |
| cpe:2.3:h:lg:lg43um7000pla:-:*:*:*:*:*:*:* | not specified by NVD | Running on | LG |
| cpe:2.3:o:lg:webos:5.5.0:*:*:*:*:*:*:* | 5.5.0 | Vulnerable | LG |
| cpe:2.3:h:lg:oled55cxpua:-:*:*:*:*:*:*:* | not specified by NVD | Running on | LG |
| cpe:2.3:o:lg:webos:6.3.3-442:*:*:*:*:*:*:* | 6.3.3-442 | Vulnerable | LG |
| cpe:2.3:h:lg:oled48c1pub:-:*:*:*:*:*:*:* | not specified by NVD | Running on | LG |
| cpe:2.3:o:lg:webos:7.3.1-43:*:*:*:*:*:*:* | 7.3.1-43 | Vulnerable | LG |
| cpe:2.3:h:lg:oled55a23la:-:*:*:*:*:*:*:* | not specified by NVD | Running on | LG |
- cpe:2.3:o:lg:webos:4.9.7:*:*:*:*:*:*:* Versions 4.9.7 Vulnerable ·LG
- cpe:2.3:h:lg:lg43um7000pla:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·LG
- cpe:2.3:o:lg:webos:5.5.0:*:*:*:*:*:*:* Versions 5.5.0 Vulnerable ·LG
- cpe:2.3:h:lg:oled55cxpua:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·LG
- cpe:2.3:o:lg:webos:6.3.3-442:*:*:*:*:*:*:* Versions 6.3.3-442 Vulnerable ·LG
- cpe:2.3:h:lg:oled48c1pub:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·LG
- cpe:2.3:o:lg:webos:7.3.1-43:*:*:*:*:*:*:* Versions 7.3.1-43 Vulnerable ·LG
- cpe:2.3:h:lg:oled55a23la:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·LG
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
LG webOS — lgsecurity.lge.com/bulletins/tv
4 records Highest priority Priority MEDIUM 4 MEDIUM
Other records, highest priority first
- TI-2023-05802 Command injection in the getAudioMetadata method from the com.webos.service.attachedstoragemanager servicePriority MEDIUM 51
- TI-2023-05801 Command injection in the processAnalyticsReport method from the com.webos.service.cloudupload servicePriority MEDIUM 49
- TI-2023-05803 Command injection in the com.webos.service.connectionmanager/tv/setVlanStaticAddress endpointPriority MEDIUM 48
Timeline
- 2026-10-02 Threatist record created from CVE-2023-6317
- 2026-10-03 Alias added: GHSA-rm4x-93m8-4qcv
References
More LG Webos vulnerabilities
- TI-2023-05802 Command injection in the getAudioMetadata method from the com.webos.service.attachedstoragemanager service CVSS 3.1CRITICAL 9.1
- TI-2023-05801 Command injection in the processAnalyticsReport method from the com.webos.service.cloudupload service CVSS 3.1CRITICAL 9.1
- TI-2023-05803 Command injection in the com.webos.service.connectionmanager/tv/setVlanStaticAddress endpoint CVSS 3.1CRITICAL 9.1
- TI-2022-07782 The public API error causes for the attacker to be able to bypass API access control. CVSS 3.1CRITICAL 9.8
- TI-2022-07783 V8 javascript engine (heap vulnerability) can cause privilege escalation ,which can impact on some webOS TV models. CVSS 3.1HIGH 7.8
- TI-2020-07844 webOS TV Emulator privilege escalation vulnerability CVSS 3.1HIGH 7.8
Sources
- CVE-2023-6317 · CVE Program
- CVE-2023-6317 · NVD
- FIRST EPSS
- GHSA-rm4x-93m8-4qcv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences