talkd daemons could allow remote command execution as root
| talkd-bo (453) |  High Risk |
Description:
Talkd could allow a remote attacker to execute arbitrary commands on the system to gain root privileges.
Platforms Affected:
- FreeBSD, FreeBSD
- HP, HP-UX 10.10
- HP, HP-UX 10.20
- IBM, AIX 3.2
- IBM, AIX 4.1
- IBM, AIX 4.2
- Linux, Kernel
- NEC, ASL UX 4800
- NEC, EWS-UX V
- NEC, UP-UX V
- SGI, IRIX 3.2
- SGI, IRIX 3.3
- SGI, IRIX 3.3.1
- SGI, IRIX 3.3.2
- SGI, IRIX 3.3.3
- SGI, IRIX 4.0
- SGI, IRIX 4.0.1
- SGI, IRIX 4.0.1t
- SGI, IRIX 4.0.2
- SGI, IRIX 4.0.3
- SGI, IRIX 4.0.4
- SGI, IRIX 4.0.4b
- SGI, IRIX 4.0.4t
- SGI, IRIX 4.0.5
- SGI, IRIX 4.0.5a
- SGI, IRIX 4.0.5b
- SGI, IRIX 4.0.5d
- SGI, IRIX 4.0.5e
- SGI, IRIX 4.0.5f
- SGI, IRIX 4.0.5g
- SGI, IRIX 4.0.5h
- SGI, IRIX 4.0.5_iop
- SGI, IRIX 4.0.5_ipr
- SGI, IRIX 5.0
- SGI, IRIX 5.0.1
- SGI, IRIX 5.1
- SGI, IRIX 5.1.1
- SGI, IRIX 5.2
- SGI, IRIX 5.3
- SGI, IRIX 5.3 XFS
- SGI, IRIX 6.0
- SGI, IRIX 6.0.1
- SGI, IRIX 6.1
- SGI, IRIX 6.2
- SGI, IRIX 6.3
- SGI, IRIX 6.4
- Sun, Solaris 1.0
- Sun, Solaris 2.3
- Sun, Solaris 2.4 x86
- Sun, Solaris 2.5 x86
- Sun, Solaris 2.5.1
- Sun, Solaris 2.5.1 x86
- Sun, SunOS 4.1.3u1
- Sun, SunOS 4.1.4
- WindRiver, BSDOS 2.1
Remedy:
For FreeBSD 2.1:
Upgrade to the latest version of FreeBSD (2.1-stable dated 1997-01-18 or later), as listed in FreeBSD Security Advisory FreeBSD-SA-96:21. See References.
For HP-UX 10.10:
Apply the PHNE_10042 patch, as listed in Hewlett-Packard Security Bulletin HPSBUX9704-061. See References.
For HP-UX 10.20:
Apply the PHNE_10043 patch, as listed in Hewlett-Packard Security Bulletin HPSBUX9704-061. See References.
For SunOS 4.x and 5.x:
Apply the appropriate patch for your system, as listed in Sun Microsystems, Inc. Security Bulletin #00147. See References.
For Silicon Graphics:
Apply the appropriate patch for your system, as listed in SGI Security Advisory 19970701-01-PX. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
As a workaround, disable the talkd service.
Consequences:
Gain Access
References:
- AusCERT Advisory AA-97.01, talkd Buffer Overrun Vulnerability at ftp://ftp.auscert.org.au/pub/auscert/advisory/AA-97.01.talkd.buffer.overrun.vul.
- CERT Advisory CA-1997-04, talkd Vulnerability at http://www.cert.org/advisories/CA-1997-04.html.
- FreeBSD Security Advisory FreeBSD-SA-96:21, unauthorized access via buffer overrun in talkd at ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/old/FreeBSD-SA-96:21.talkd.asc.
- Hewlett-Packard Company Security Bulletin HPSBUX9704-061, Security Vulnerability in talkd for HP-UX 10.10 & 10.20 only at http://online.securityfocus.com/advisories/1501. (From SecurityFocus archive.)
- SGI Security Advisory 19970701-01-PX, talkd Vulnerability at ftp://patches.sgi.com/support/free/security/advisories/19970701-01-PX.
- Sun Microsystems, Inc. Security Bulletin #00147, Vulnerability in talkd at http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/147&type=0&nav=sec.sba.
- BID-210: Multiple Vendor talkd(8) Vulnerability
- CVE-1999-0048: Talkd, when given corrupt DNS information, can be used to execute arbitrary commands with root privileges.
Reported:
Jan 01, 1997
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