Multiple vendor talkd announce.cpp dprint_mesg format string
| linux-talkd-overwrite-root (5344) |  High Risk |
Description:
Talkd is vulnerable to a remote format string attack. An attacker can supply a malicious format string to the dpring_mesg function in the announce.cpp file to overwrite memory and execute arbitrary code on the system with root privileges.
Platforms Affected:
- OpenBSD, OpenBSD 2.x
- RedHat, Linux
- SGI, IRIX 6.5
- SGI, IRIX 6.5.1
- SGI, IRIX 6.5.2
- SGI, IRIX 6.5.3
- SGI, IRIX 6.5.4
- SGI, IRIX 6.5.5
- SGI, IRIX 6.5.6
- SGI, IRIX 6.5.7
- SGI, IRIX 6.5.8
- SGI, IRIX 6.5.9
- Sun, Solaris 2.5.1
- Sun, Solaris 2.6
- Sun, Solaris 7.0
- Sun, Solaris 8
Remedy:
Apply the talkd patch, as listed in OpenBSD Security Advisory, October 6, 2000. See References.
For Sun Solaris 2.5.1:
Apply patch 104692-02, as listed in Sun Alert ID: 44646. See References.
For Sun Solaris 2.6:
Apply patch 112814-01, as listed in Sun Alert ID: 44646. See References.
For SGI IRIX:
Upgrade to the latest version of IRIX (6.5.16 or later), as listed in SGI Security Advisory 20020603-01-I. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Access
References:
- BugTraq Mailing List, Thu Oct 05 2000 - 18:00:16 CDT, talkd [WAS: Re: OpenBSD Security Advisory] at http://archives.neohapsis.com/archives/bugtraq/2000-10/0086.html.
- BugTraq Mailing List, Wed Oct 04 2000 - 02:31:03 CDT, Re: OpenBSD Security Advisory at http://archives.neohapsis.com/archives/bugtraq/2000-10/0059.html.
- Gobbles Security Advisory #35, Multiple Vendor Talkd Vulnerability at http://www.immunitysec.com/GOBBLES/advisories/GOBBLES-35.txt.
- Next Generation Security Technologies Security Advisory NGSEC-2002-3, Solaris in.talkd, remote root compromise at http://www.ngsec.com/docs/advisories/NGSEC-2002-3.txt.
- OpenBSD Security Advisory, October 6, 2000, A format string vulnerability exists in talkd(8). at http://www.openbsd.com/errata.html#talkd.
- SGI Security Advisory 20020603-01-I, talkd vulnerability at ftp://patches.sgi.com/support/free/security/advisories/20020603-01-I.
- Sun Security Alert 44646, Security Vulnerability in the in.talkd(1M) Daemon at http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F44646&zone_32=category%3Asecurity.
- BID-1764: BSD talkd Remote Format String Vulnerability
- CVE-2000-1010: Format string vulnerability in talkd in OpenBSD and possibly other BSD-based OSes allows remote attackers to execute arbitrary commands via a user name that contains format characters.
Reported:
Oct 05, 2000
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