nanog mailing list archives
RE: RPC errors
From: "Bob German" <bobgerman () irides com>
Date: Mon, 11 Aug 2003 18:00:37 -0400
I've seen similar behavior. I patch immediately and religiously, and on two of my patched boxes I've seen unusual svchost crashes yesterday and today. But no infection, knock on wood. Bob German Sr Systems Engineer Irides, LLC -----Original Message----- From: owner-nanog () merit edu [mailto:owner-nanog () merit edu] On Behalf Of John Dvorak Sent: Monday, August 11, 2003 5:57 PM To: NANOG Subject: Re: RPC errors On Mon, 11 Aug 2003 17:33:33 -0400 Kevin Houle <kjh () cert org> wrote:
--On Monday, August 11, 2003 02:26:40 PM -0700 Mike Damm <MikeD () irwinresearch com> wrote:The DCOM exploit that is floating around crashes the Windows RPC service when the attacker closes the connection to your system after a successful attack. Best bet is to assume any occurrence of crashing
RPC services to be signs of a compromised system until proven otherwise. http://www.cert.org/advisories/CA-2003-19.htmlThat's good advice. Many of the known exploits cause the RPC service to crash after the exploit is successful. I'll point out that not all exploits cause the service failure. So, the absence of an RPC service failure is likewise not an indicator that a vulnerable machine has escaped compromise. Kevin
Interestingly, we have clear examples of boxes which were not infected but on which RPC services did crash. This may suggest that the worm also takes advantage of the unrelated RPC DOS vulnerability (2000 and XP) which I believe MS has still not patched. John
Current thread:
- Re: RPC errors, (continued)
- Re: RPC errors Chris Reining (Aug 11)
- Re: RPC errors /m (Aug 11)
- Re: RPC errors william (Aug 11)
- RE: RPC errors Drew Weaver (Aug 11)
- RE: RPC errors McBurnett, Jim (Aug 11)
- RE: RPC errors Mike Damm (Aug 11)
- RE: RPC errors Kevin Houle (Aug 11)
- RE: RPC errors Drew Weaver (Aug 11)
- RE: RPC errors Brennan_Murphy (Aug 11)
- Re: RPC errors John Dvorak (Aug 11)
- RE: RPC errors Bob German (Aug 11)
- Re: RPC errors Michael Painter (Aug 11)
- RE: RPC errors Brennan_Murphy (Aug 11)
- RE: RPC errors Rob Thomas (Aug 11)
- RE: RPC errors Mike Damm (Aug 11)
- RE: RPC errors Mark Segal (Aug 11)
- Re: RPC errors Jack Bates (Aug 11)
- Re: RPC errors Randy Bush (Aug 11)
- Re: RPC errors John Palmer (Aug 11)
- Re: RPC errors Jim Shankland (Aug 11)
- Re: RPC errors Jack Bates (Aug 12)
- Re: RPC errors Jack Bates (Aug 11)