ZyXEL Prestige DSL router default password could allow unauthorized administrator access
| zyxel-router-default-password (6968) |  High Risk |
Description:
ZyXEL Prestige 642R and 642R-I DSL routers could allow a remote attacker to gain unauthorized access to the router¿s configuration, caused by a vulnerability in the default administrator password. A remote attacker could establish an FTP or Telnet connection to the router and perform configuration changes, such as firmware upgrades and password changes.
Platforms Affected:
- ZyXEL, Prestige 342R
- ZyXEL, Prestige 642R-1
Remedy:
No remedy available as of August 2001.
As a workaround, filter all port 21 and port 23 traffic from the WAN interface.
— OR —
Change the default administrator password.
Consequences:
Bypass Security
References:
- BugTraq Mailing List, Wed Aug 08 2001 - 22:07:55 CDT, ZyXEL Prestige 642R: Exposed Admin Services on WAN with Default Password at http://archives.neohapsis.com/archives/bugtraq/2001-08/0101.html.
- ZyXEL Communications Web site, ZyXEL at http://www.zyxel.com/.
- BID-3161: ZyXEL Prestige Router Administration Interface Vulnerability
- CVE-1999-0571: A router's configuration service or management interface (such as a web server or telnet) is configured to allow connections from arbitrary hosts.
Reported:
Aug 09, 2001
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