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Bug 1391

Summary: nfs-server-2.2beta37-0 in 4.2 is still vulnerable to mountd attacks
Product: [Retired] Red Hat Linux Reporter: Chaskiel Grundman <cg2v>
Component: nfs-serverAssignee: Jeff Johnson <jbj>
Status: CLOSED WORKSFORME QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 4.2CC: cg2v
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 1999-05-16 21:58:11 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Description Chaskiel Grundman 1999-03-01 21:09:41 UTC
The summary basically says it. I run a single 4.2 nfs server
on campus to support the installation of workstations. For
the last month or so, mountd on this server has repeatedly
segfaulted. The debug log shows nothing useful. I have a
packet trace (including all the data) from an attack that
used the portmapper, but not the exploit program itself.
The string 'Privet ADMcrew' appears in the packet

I'm pretty sure I'm running the most recent nfs-server
release:

linuxbuild /dist/src  > rpm -q nfs-server
nfs-server-2.2beta37-0
linuxbuild /dist/src  > rpm -V nfs-server
S.5....T c /etc/exports
....L... c /etc/rc.d/rc0.d/K20nfs
....L... c /etc/rc.d/rc1.d/K20nfs
....L... c /etc/rc.d/rc2.d/K20nfs
....L... c /etc/rc.d/rc3.d/S60nfs
.M...... c /etc/rc.d/rc5.d/S60nfs
....L... c /etc/rc.d/rc6.d/K20nfs
missing    /usr/doc/nfs-server-2.2beta37
missing    /usr/doc/nfs-server-2.2beta37/NEWS
missing    /usr/doc/nfs-server-2.2beta37/README
linuxbuild /dist/src  > rpm -V -p
/dist/redhat/updates/RPMS/nfs-server-2.2beta37-0.i386.rpm
S.5....T c /etc/exports
....L... c /etc/rc.d/rc0.d/K20nfs
....L... c /etc/rc.d/rc1.d/K20nfs
....L... c /etc/rc.d/rc2.d/K20nfs
....L... c /etc/rc.d/rc3.d/S60nfs
.M...... c /etc/rc.d/rc5.d/S60nfs
....L... c /etc/rc.d/rc6.d/K20nfs
missing    /usr/doc/nfs-server-2.2beta37
missing    /usr/doc/nfs-server-2.2beta37/NEWS
missing    /usr/doc/nfs-server-2.2beta37/README
linuxbuild /dist/src  > md5
/dist/redhat/updates/RPMS/nfs-server-2.2beta37-0.i386.rpm
MD5
(/dist/redhat/updates/RPMS/nfs-server-2.2beta37-0.i386.rpm)
= 31cf25a52d81b411b5771c8068a4bcec

Comment 1 David Lawrence 1999-03-02 21:18:59 UTC
Assigned bug to a developer for further review

Comment 2 Jeff Johnson 1999-04-09 18:50:59 UTC
Please reopen this bug if you have enough information about
the exploit for us to fix the problem.