CVE-2019-12789

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Summary

CVECVE-2019-12789
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-06-17 17:15:00 UTC
Updated2020-08-24 17:37:00 UTC
DescriptionAn issue was discovered on Actiontec T2200H T2200H-31.128L.08 devices, as distributed by Telus. By attaching a UART adapter to the UART pins on the system board, an attacker can use a special key sequence (Ctrl-\) to obtain a shell with root privileges. After gaining root access, the attacker can mount the filesystem read-write and make permanent modifications to the device including bricking of the device, disabling vendor management of the device, preventing automatic upgrades, and permanently installing malicious code on the device.

Risk And Classification

Problem Types: NVD-CWE-noinfo

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Actiontec T2200h - All All All
Hardware Actiontec T2200h - All All All
Operating System Actiontec T2200h Firmware t2200h-31.1238l.08 All All All
Operating System Actiontec T2200h Firmware t2200h-31.1238l.08 All All All

References

ReferenceSourceLinkTags
Full Disclosure: [CVE-2019-12789] Telus Actiontec T2200H Local Privilege Escalation MISC seclists.org Exploit, Mailing List, Third Party Advisory
CrossTalk Broadband Blog from Actiontec — MISC www.actiontec.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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