Description
The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG589 and NVG599 devices, when IP Passthrough mode is not used, configures ssh-permanent-enable WAN SSH logins to the remotessh account with the 5SaP9I26 password, which allows remote attackers to access a "Terminal shell v1.0" service, and subsequently obtain unrestricted root privileges, by establishing an SSH session and then entering certain shell metacharacters and BusyBox commands.
References (3)
Core 3
Core References
Third Party Advisory x_refsource_misc
https://threatpost.com/bugs-in-arris-modems-distributed-by-att-vulnerable-to-trivial-attacks/127753/
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/100585
Exploit, Mitigation, Technical Description, Third Party Advisory x_refsource_misc
https://www.nomotion.net/blog/sharknatto/
Scores
CVSS v3
8.1
EPSS
0.0438
EPSS Percentile
90.0%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-798
Status
published
Products (1)
att/u-verse_firmware
9.2.2h0d83
Published
Sep 03, 2017
Tracked Since
Feb 18, 2026