OpenSSH large packet buffer overflow

openssh-packet-bo (13191)

High Risk

Description:

OpenSSH is vulnerable to a buffer overflow. A remote attacker could send a large packet to overflow a buffer and cause a denial of service and possibly execute arbitrary code on the system.

Platforms Affected:

• Cisco, CatOS
• Cisco, CiscoWorks 1105 Hosting Solution Engine
• Cisco, CiscoWorks 1105 Wireless LAN Solution Engine
• Cisco, SN 5428 Storage Router 2-3.3.1-K9
• Cisco, SN 5428 Storage Router 2-3.3.2-K9
• Cisco, SN 5428 Storage Router 2.5.1-K9
• Cisco, SN 5428 Storage Router 3.2.1-K9
• Cisco, SN 5428 Storage Router 3.2.2-K9
• Cisco, SN 5428 Storage Router 3.3.1-K9
• Cisco, SN 5428 Storage Router 3.3.2-K9
• Conectiva, Linux 7.0
• Conectiva, Linux 8.0
• Conectiva, Linux 9.0
• Debian, Debian Linux 3.0
• EngardeLinux, Secure Linux
• EngardeLinux, Secure Professional
• FreeBSD, FreeBSD 4.0
• Gentoo, Linux
• HP, HP-UX 11.00
• HP, HP-UX 11.04
• HP, HP-UX 11.11
• HP, HP-UX 11.22
• Immunix, Immunix OS 7+-beta
• MandrakeSoft, Mandrake Linux 8.2
• MandrakeSoft, Mandrake Linux 8.2 PPC
• MandrakeSoft, Mandrake Linux 9.0
• MandrakeSoft, Mandrake Linux 9.1
• MandrakeSoft, Mandrake Linux 9.1 PPC
• MandrakeSoft, Mandrake Linux Corporate Server 2.1
• MandrakeSoft, Mandrake Linux Corporate Server 2.1 X86_64
• MandrakeSoft, Mandrake Multi Network Firewall 8.2
• NetBSD, NetBSD 1.5
• NetBSD, NetBSD 1.5.1
• NetBSD, NetBSD 1.5.2
• NetBSD, NetBSD 1.5.3
• NetBSD, NetBSD 1.6
• NetBSD, NetBSD 1.6.1
• NetBSD, NetBSD CURRENT
• OpenBSD, OpenSSH 1.2
• OpenBSD, OpenSSH 1.2.1
• OpenBSD, OpenSSH 1.2.2
• OpenBSD, OpenSSH 1.2.27
• OpenBSD, OpenSSH 1.2.3
• OpenBSD, OpenSSH 2.1
• OpenBSD, OpenSSH 2.1.1
• OpenBSD, OpenSSH 2.2
• OpenBSD, OpenSSH 2.3
• OpenBSD, OpenSSH 2.5
• OpenBSD, OpenSSH 2.5.1
• OpenBSD, OpenSSH 2.5.2
• OpenBSD, OpenSSH 2.9
• OpenBSD, OpenSSH 2.9.9
• OpenBSD, OpenSSH 2.9.9p2
• OpenBSD, OpenSSH 2.9p1
• OpenBSD, OpenSSH 2.9p2
• OpenBSD, OpenSSH 3.0
• OpenBSD, OpenSSH 3.0.1
• OpenBSD, OpenSSH 3.0.1p1
• OpenBSD, OpenSSH 3.0.2
• OpenBSD, OpenSSH 3.0.2p1
• OpenBSD, OpenSSH 3.0p1
• OpenBSD, OpenSSH 3.1
• OpenBSD, OpenSSH 3.1p1
• OpenBSD, OpenSSH 3.2
• OpenBSD, OpenSSH 3.2.2
• OpenBSD, OpenSSH 3.2.2p1
• OpenBSD, OpenSSH 3.2.3p1
• OpenBSD, OpenSSH 3.3
• OpenBSD, OpenSSH 3.3p1
• OpenBSD, OpenSSH 3.4
• OpenBSD, OpenSSH 3.4p1
• OpenBSD, OpenSSH 3.5
• OpenBSD, OpenSSH 3.5p1
• OpenBSD, OpenSSH 3.6
• OpenBSD, OpenSSH 3.6.1
• OpenBSD, OpenSSH 3.6.1p1
• OpenBSD, OpenSSH 3.6.1p2
• OpenPKG, OpenPKG 1.2
• OpenPKG, OpenPKG 1.3
• OpenPKG, OpenPKG CURRENT
• RedHat, Enterprise Linux 2.1 AS
• RedHat, Enterprise Linux 2.1 ES
• RedHat, Enterprise Linux 2.1 WS
• RedHat, Enterprise Linux 2.1 AW
• RedHat, Linux 7
• RedHat, Linux 7.1
• RedHat, Linux 7.2
• RedHat, Linux 7.3
• RedHat, Linux 8.0
• RedHat, Linux 9.0
• RedHat, Linux Advanced Workstation 2.1 Itanium
• SCO, Caldera OpenLinux Server 3.1.1
• SCO, Caldera OpenLinux Workstation 3.1.1
• SGI, IRIX 2.2.1
• SGI, IRIX 2.3
• 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
• SGI, IRIX 6.5
• SGI, IRIX 6.5.1
• SGI, IRIX 6.5.10
• SGI, IRIX 6.5.10f
• SGI, IRIX 6.5.10m
• SGI, IRIX 6.5.11
• SGI, IRIX 6.5.11f
• SGI, IRIX 6.5.11m
• SGI, IRIX 6.5.12
• SGI, IRIX 6.5.12f
• SGI, IRIX 6.5.12m
• SGI, IRIX 6.5.13
• SGI, IRIX 6.5.13f
• SGI, IRIX 6.5.13m
• SGI, IRIX 6.5.14
• SGI, IRIX 6.5.14f
• SGI, IRIX 6.5.14m
• SGI, IRIX 6.5.15
• SGI, IRIX 6.5.15f
• SGI, IRIX 6.5.15m
• SGI, IRIX 6.5.16
• SGI, IRIX 6.5.16f
• SGI, IRIX 6.5.16m
• SGI, IRIX 6.5.17
• SGI, IRIX 6.5.17f
• SGI, IRIX 6.5.17m
• SGI, IRIX 6.5.18
• SGI, IRIX 6.5.18f
• SGI, IRIX 6.5.18m
• SGI, IRIX 6.5.19
• SGI, IRIX 6.5.19f
• SGI, IRIX 6.5.19m
• SGI, IRIX 6.5.2
• SGI, IRIX 6.5.20
• SGI, IRIX 6.5.20f
• SGI, IRIX 6.5.20m
• SGI, IRIX 6.5.21
• SGI, IRIX 6.5.21f
• SGI, IRIX 6.5.21m
• SGI, IRIX 6.5.2f
• SGI, IRIX 6.5.2m
• SGI, IRIX 6.5.3
• SGI, IRIX 6.5.3f
• SGI, IRIX 6.5.3m
• SGI, IRIX 6.5.4
• SGI, IRIX 6.5.4f
• SGI, IRIX 6.5.4m
• SGI, IRIX 6.5.5
• SGI, IRIX 6.5.5f
• SGI, IRIX 6.5.5m
• SGI, IRIX 6.5.6
• SGI, IRIX 6.5.6f
• SGI, IRIX 6.5.6m
• SGI, IRIX 6.5.7
• SGI, IRIX 6.5.7f
• SGI, IRIX 6.5.7m
• SGI, IRIX 6.5.8
• SGI, IRIX 6.5.8f
• SGI, IRIX 6.5.8m
• SGI, IRIX 6.5.9
• SGI, IRIX 6.5.9f
• SGI, IRIX 6.5.9m
• Slackware, Slackware Linux 8.1
• Slackware, Slackware Linux 9.0
• Slackware, Slackware Linux current
• Sun, Solaris 9
• SuSE, Linux Enterprise Server 8
• SuSE, SuSE eMail Server 3.1
• SuSE, SuSE eMail Server III
• SuSE, SuSE Linux 7.2
• SuSE, SuSE Linux 7.3
• SuSE, SuSE Linux 8.0
• SuSE, SuSE Linux 8.1
• SuSE, SuSE Linux 8.2
• SuSE, SuSE Linux Connectivity Server
• SuSE, SuSE Linux Database Server
• SuSE, SuSE Linux Enterprise Server 7.0
• SuSE, SuSE Linux Firewall
• SuSE, SuSE Linux Office Server
• SuSE, SuSE Linux Standard Server 8
• Trustix, Secure Linux 1.2
• Trustix, Secure Linux 1.5
• Trustix, Secure Linux 2.0
• Turbolinux, Turbolinux 7 Server
• Turbolinux, Turbolinux 7 Workstation
• Turbolinux, Turbolinux 8 Server
• Turbolinux, Turbolinux 8 Workstation
• Turbolinux, Turbolinux Advanced Server 6
• Turbolinux, Turbolinux Server 6.1
• Turbolinux, Turbolinux Server 6.5
• Turbolinux, Turbolinux Workstation 6.0

Remedy:

Upgrade to the latest version of OpenSSH (3.7 or later), available from the OpenSSH Web site. See References.

For EnGarde Secure Linux 1.0.1:
Upgrade to the latest version of OpenSSH (3.4p1-1.0.23 or later), as listed in EnGarde Secure Linux Security Advisory ESA-20030916-023. See References.

For Red Hat Linux:
Upgrade to the latest openssh package, as listed below. Refer to RHSA-2003:279-17 for more information. See References.

Red Hat 7.1: 3.1p1-13 or later
Red Hat 7.2 and 7.3: 3.1p1-14 or later
Red Hat 8.0: 3.4p1-7 or later
Red Hat 9: 3.5p1-11 or later

For Red Hat Linux containing the openssh package:
Upgrade to the latest openssh package, as listed below. Refer to RHSA-2003:280-13 for more information. See References.

Red Hat Enterprise Linux AS (v. 2.1), ES (v.2.1), WS (v.2.1), and Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor: 3.1p1-14 or later

For Debian GNU/Linux 3.0 (woody):
Upgrade to the latest openssh package (1:3.4p1-1.1 or later), as listed in DSA-382-1. See References.

For Debian GNU/Linux 3.0 (woody):
Upgrade to the latest openssh-krb5 package (3.4p1-0woody3 or later), as listed in DSA-383-1. See References.

For FreeBSD:
Upgrade to the latest version of FreeBSD (4-STABLE or later) or to (RELENG_5_1, RELENG_4_8, or RELENG_4_7 security branch dated later than 2003-09-16), as listed in FreeBSD Security Advisory FreeBSD-SA-03:12.openssh. See References.

— OR —

Apply the appropriate patch for your system, as listed in FreeBSD Security Advisory FreeBSD-SA-03:12.openssh. See References.

For SuSE Linux:
Upgrade to the latest openssh package, as listed below. Refer to SuSE Linux Security Announcement SuSE-SA:2003:039 for more information. See References.

SuSE Linux 8.2 (Intel): 3.5p1-107 or later
SuSE Linux 8.1 and 8.0: 3.4p1-215 or later
SuSE Linux 7.3 and 7.2: 2.9.9p2-156 or later
SuSE Linux 7.3 (Sparc): 2.9.9p2-53 or later
SuSE Linx 7.3 (PPC): 2.9.9p2-109 or later

For Gentoo Linux:
Upgrade to the latest version of openssh (3.7_p1 or later), as listed in Gentoo Linux Security Announcement 200309-11. See References.

For Conectiva Linux:
Upgrade to the latest openssh package, as listed below. Refer to Conectiva Linux Security Announcement CLSA-2003:739 for more information. See References.

Conectiva Linux 7.0: 3.4p1-1U70_2cl or later
Conectiva Linux 8: 3.4p1-1U80_2cl or later
Conectiva Linux 9: 3.5p1-27767U90_1cl or later

For Immunix 7+:
Upgrade to the latest version of openssh (3.4p1-1_imnx_12 or later), as listed in Immunix Secured OS Security Advisory IMNX-2003-7+-020-02. See References.

For Slackware Linux:
Upgrade to the latest openssh package, as listed below. Refer to slackware-security Mailing List, Wed Sep 17 01:25:22 PDT 2003 for more information. See References.

Slackware Linux 8.1, 9.0, -current : 3.7p1 or later

For Cisco SN 5428 Storage Router:
Upgrade to the latest version (3.4.1 or later), as listed in the Cisco Security Advisory 2003 September 17 0700 GMT. See References.

For Turbolinux:
Upgrade to the latest openssh package (3.7.1p1-4 or later), as listed in Turbolinux Security Advisory TLSA-2003-51. See References.

For NetBSD-current (dated prior to 2003-09-17), 1.5, 1.5.1, 1.5.2, 1.5.3, 1.6, and 1.6.1:
Upgrade to the appropriate fixed versions of NetBSD, as listed in NetBSD Security Advisory 2003-012. See References.

For Trustix Secure Linux 1.2, 1.5, and 2.0:
Upgrade to the latest openssh package (3.6.1p2-4tr or later), as listed in Trustix Secure Linux Security Advisory #2003-0033. See References.

For HP-UX 11.00, 11.11, and 11.22:
Download and install the appropriate depot for this vulnerability, as listed in Hewlett-Packard Company Security Bulletin HPSBUX0309-282. See References.

For HP-UX 11.04:
Apply the patch for this vulnerability, as listed in Hewlett-Packard Company Security Bulletin HPSBUX0311-302. See References.

For OpenPKG:
Upgrade to the latest openssh package, as listed below. Refer to OpenPKG Security Advisory OpenPKG-SA-2003.040 for more information. See References.

OpenPKG CURRENT: 3.7.1p1-20030917 or later
OpenPKG 1.2: 3.5p1-1.2.4 or later
OpenPKG 1.3: 3.6.1p2-1.3.2 or later

For SGI IRIX:
Upgrade to the appropriate fixed packages, as listed in SGI Security Advisory 20030904-02-P. See References.

For Caldera OpenLinux Server and Workstation 3.1.1:
Upgrade to the latest version of openssh (3.7.1p2-1 or later), as listed in SCO Security Advisory CSSA-2003-027.0. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

Consequences:

Gain Access

References:

• AppleCare Knowledge Base Document 61798, Security Update 2003-08-14 at http://docs.info.apple.com/article.html?artnum=61798. (Mac OS X 10.2.8: OpenSSH: Addresses CAN-2003-0693 to fix buffer management errors in OpenSSH's sshd versions prior to 3.7.1.)
• CERT Advisory CA-2003-24, Buffer Management Vulnerability in OpenSSH at http://www.cert.org/advisories/CA-2003-24.html.
• CIAC Information Bulletin N-151, OpenSSH Buffer Management Error at http://www.ciac.org/ciac/bulletins/n-151.shtml.
• CIAC Information Bulletin O-030, Hewlett Packard VirtualVault OpenSSH Vulnerabilities at http://www.ciac.org/ciac/bulletins/o-030.shtml.
• Cisco Systems Inc. Security Advisory, 2003 September 17 0700 GMT, OpenSSH Server Vulnerabilities at http://www.cisco.com/warp/public/707/cisco-sa-20030917-openssh.shtml.
• Conectiva Linux Security Announcement CLSA-2003:739, openssh at http://distro.conectiva.com/atualizacoes/index.php?id=a&anuncio=000739.
• FreeBSD Security Advisory FreeBSD-SA-03:12, OpenSSH buffer management error at ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-03:12.openssh.asc.
• Full-Disclosure Mailing List, Mon Sep 15 2003 - 18:31:56 CDT, openssh remote exploit at http://archives.neohapsis.com/archives/fulldisclosure/2003-q3/3967.html.
• Gentoo Linux Security Announcement 200309-11, openssh at http://www.linuxsecurity.com/content/view/105366/104/. (From LinuxSecurity archive)
• Guardian Digital Security Advisory ESA-20030916-023 , OpenSSH buffer management error. at http://www.linuxsecurity.com/content/view/105358/101/.
• Immunix Secured OS Security Advisory IMNX-2003-7+-020-01, openssh at http://www.linuxsecurity.com/content/view/105364/105/. (From LinuxSecurity archive)
• Immunix Secured OS Security Advisory IMNX-2003-7+-020-02, openssh at http://www.linuxsecurity.com/content/view/105372/105/. (From LinuxSecurity archive)
• Internet Security Systems Security Advisory, September 16, 2003, OpenSSH Memory Corruption Vulnerability at http://xforce.iss.net/xforce/alerts/id/144.
• NetBSD Security Advisory 2003-012, Out of bounds memset(0) in sshd at http://www.linuxsecurity.com/content/view/105373/107/. (From LinuxSecurity archive)
• OpenSSH Security Advisory: buffer.adv, buffer.adv at http://www.openssh.com/txt/buffer.adv.
• OpenSSH Web site, OpenSSH at http://www.openssh.com.
• SCO Security Advisory CSSA-2003-027.0, OpenLinux: OpenSSH: multiple buffer handling problems at ftp://ftp.sco.com/pub/security/OpenLinux/CSSA-2003-027.0.txt.
• SGI Security Advisory 20030904-01-P, Multiple OpenSSH/OpenSSL Vulnerabilities at ftp://patches.sgi.com/support/free/security/advisories/20030904-01-P.asc.
• SGI Security Advisory 20030904-02-P, Multiple OpenSSH/OpenSSL Vulnerabilities Update at ftp://patches.sgi.com/support/free/security/advisories/20030904-02-P.asc.
• SGI Security Advisory 20031001-01-U, SGI Advanced Linux Environment security update #2 at ftp://patches.sgi.com/support/free/security/advisories/20031001-01-U.asc.
• slackware-security Mailing List, Tue, 16 Sep 2003 12:39:36 -0700 (PDT), OpenSSH Security Advisory (SSA:2003-259-01) at http://www.slackware.com/security/viewer.php?l=slackware-security&y=2003&m=slackware-security.374735.
• slackware-security Mailing List, Wed Sep 17 01:25:22 PDT 2003, OpenSSH updated again (SSA:2003-260-01) at http://www.linuxsecurity.com/content/view/105376/111/. (From LinuxSecurity archive)
• Sun Alert ID: 56861, Secure Shell Daemon (sshd(1M)) Buffer Management Security Vulnerability at http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F56861&zone_32=category%3Asecurity.
• Trustix Secure Linux Security Advisory #2003-0033, openssh at http://www.trustix.net/errata/2003/0033/.
• BID-8628: OpenSSH Buffer Mismanagement Vulnerabilities
• CVE-2003-0693: A buffer management error in buffer_append_space of buffer.c for OpenSSH before 3.7 may allow remote attackers to execute arbitrary code by causing an incorrect amount of memory to be freed and corrupting the heap, a different vulnerability than CVE-2003-0695.
• DSA-382: ssh -- possible remote vulnerability
• DSA-383: ssh-krb5 -- possible remote vulnerability
• MDKSA-2003:090: Updated openssh packages fix buffer management error
• MDKSA-2003:090-1: Updated openssh packages fix buffer management error
• OpenPKG-SA-2003.040: OpenSSH
• RHSA-2003-279: Updated OpenSSH packages fix potential vulnerabilities
• RHSA-2003-280: openssh security update
• SUSE-SA:2003:038: openssh: potential remote privilege escalation
• SUSE-SA:2003:039: openssh (second release): potential remote privilege escalation

Reported:

Sep 16, 2003

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

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