Abstract

CVS had heap overflow vulnerabilities which can be trigged remotely by
malicious people on the net.

NetBSD does not run a CVS server in the default install. Relatively few
users have reason to configure one, and only those who do are affected.

Technical Details

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0396 

Solutions and Workarounds

If you run a CVS server:

We highly recommend you to upgrade your cvs binary to 1.11.16, or 1.12.8 or
higher.

The following instructions describe how to upgrade your cvs
binaries by updating your source tree and rebuilding and
installing a new version of cvs.

* NetBSD-current:

Systems running NetBSD-current dated from before 2004-05-21
should be upgraded to NetBSD-current dated 2004-05-22 or later.

The following directories need to be updated from the
netbsd-current CVS branch (aka HEAD):
    gnu/dist/cvs
    gnu/usr.bin/cvs

To update from CVS, re-build, and re-install cvs:
    # cd src
    # cvs update -d -P gnu/dist/cvs gnu/usr.bin/cvs
    # cd gnu/usr.bin/cvs

    # make USETOOLS=no cleandir dependall
    # make USETOOLS=no install

* NetBSD 1.6, 1.6.1, 1.6.2:

The binary distribution of NetBSD 1.6, 1.6.1 and 1.6.2 are vulnerable.

Systems running NetBSD 1.6 sources dated from before
2004-06-01 should be upgraded from NetBSD 1.6 sources dated
2004-06-02 or later.

Alternately, delete your cvs binaries, and update from pkgsrc.

NetBSD 1.6.3 will include the fix.

The following directories need to be updated from the
netbsd-1-6 CVS branch:
    gnu/dist/cvs
    gnu/usr.bin/cvs

To update from CVS, re-build, and re-install cvs:

    # cd src
    # cvs update -d -P -r netbsd-1-6 gnu/dist/cvs gnu/usr.bin/cvs
    # cd gnu/usr.bin/cvs

    # make USETOOLS=no cleandir dependall
    # make USETOOLS=no install

* pkgsrc:

If your system has devel/cvs pkgsrc version 1.11.15 or lower, update
to 1.11.16

Thanks To

Matthias Scheler and Curt Sampson

Revision History

2004-06-03 Initial release

More Information
 
Advisories may be updated as new information becomes available.
The most recent version of this advisory (PGP signed) can be found at
ftp://ftp.NetBSD.org/pub/NetBSD/security/advisories/NetBSD-SA2004-008.txt.asc

Information about NetBSD and NetBSD security can be found at
http://www.NetBSD.org/  and http://www.NetBSD.org/Security/ .

Copyright 2004, The NetBSD Foundation, Inc. All Rights Reserved.
Redistribution permitted only in full, unmodified form.