ICMP timestamp requests
| icmp-timestamp (322) |  Low Risk |
Description:
The target computer responded to an ICMP timestamp request. By accurately determining the target's clock state, an attacker can more effectively attack certain time-based pseudorandom number generators (PRNGs) and the authentication systems that rely on them.
Platforms Affected:
- Apple, Mac OS
- Cisco, IOS
- Compaq, Tru64
- Data General, DG/UX
- HP, HP-UX
- IBM, AIX
- IBM, OS2
- Linux, Kernel
- Microsoft, Windows 2000
- Microsoft, Windows 2003 Server
- Microsoft, Windows 95
- Microsoft, Windows 98
- Microsoft, Windows 98SE
- Microsoft, Windows Me
- Microsoft, Windows NT 4.0
- Microsoft, Windows XP
- Novell, NetWare
- SCO, SCO Unix
- SGI, IRIX
- Sun, Solaris
- WindRiver, BSDOS
Remedy:
Configure your firewall or filtering router to block outgoing ICMP packets. Block ICMP packets of type 13 or 14 and/or code 0.
Consequences:
Other
References:
- CVE-1999-0524: ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.
Reported:
Not available
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