Sendmail signal handler timeout race condition
| smtp-timeout-bo (24584) |  High Risk |
Description:
Sendmail could allow a remote attacker to execute arbitrary commands on the system, caused by a signal race vulnerability in the processing of mail data received from remote clients. An attacker could exploit this vulnerability by sending malicious mail data to the Sendmail SMTP server at certain time intervals, which could result in integer overflows that could allow the attacker to gain complete control of the affected system.
*CVSS:
| Base Score: | 5.3 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 3.9 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Upgrade to the latest version of Sendmail (8.13.6 or later), available from the Sendmail Web site. See References.
For Debian GNU/Linux:
Refer to DSA-1015 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux:
Refer to RHSA-2006:0264-8 or RHSA-2006:0265-9 for patch, upgrade, or suggested workaround information. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 2006-03-21 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for patch or upgrade information.
References:
- FreeBSD Security Advisory FreeBSD-SA-06:13.sendmail: Race condition in sendmail.
- Internet Security Systems Protection Advisory March 22, 2006: Sendmail Remote Signal Handling Vulnerability.
- Sendmail Web site: Sendmail 8.1.13.
- Sendmail Web site: Sendmail MTA Security Vulnerability - March 22, 2006.
- SGI Security Advisory 20060401-01-U: SGI Advanced Linux Environment 3 Security Update #56.
- Slackware Security Advisory SSA:2006-081-01: sendmail.
- Sun Alert ID: 102262: Security Vulnerability in sendmail(1M) 8.12 and 8.13.0 through 8.13.5.
- Sun Alert ID: 102324: Sun Cobalt sendmail(1M) Security Issue Involving Signal Handling Daemon.
- US-CERT Technical Cyber Security Alert TA06-081A: Sendmail Race Condition Vulnerability.
- ASA-2006-074: sendmail security update (RHSA-2006-0264 & RHSA-2006-0265)
- ASA-2006-078: Sun Alert Notifications from Sun Weekly Report dated Mar 25 2006
- ASA-2006-104: UnixWare Sendmail Arbitrary Code Execution Vulnerability (SCOSA-2006.24)
- BID-17192: Sendmail Asynchronous Signal Handling Remote Code Execution Vulnerability
- CVE-2006-0058: Signal handler race condition in Sendmail 8.13.x before 8.13.6 allows remote attackers to execute arbitrary code by triggering timeouts in a way that causes the setjmp and longjmp function calls to be interrupted and modify unexpected memory locations.
- DSA-1015: sendmail -- programming error
- GLSA-200603-21: Sendmail: Race condition in the handling of asynchronous signals
- MDKSA-2006:058: Updated sendmail packages fix remote vulnerability
- OpenPKG-SA-2006.007: Sendmail
- OSVDB ID: 24037: Sendmail Signal Handler Race Condition Remote Overflow
- RHSA-2006-0264: sendmail security update
- RHSA-2006-0265: sendmail security update
- SA19342: Sendmail Signal Handling Memory Corruption Vulnerability
- SA19349: AIX sendmail Signal Handling Memory Corruption Vulnerability
- SA19360: Sun Solaris Sendmail Signal Handling Memory Corruption
- SA19404: Avaya Products Sendmail Signal Handling Memory Corruption
- SA19450: F-Secure Messaging Security Gateway Sendmail Vulnerability
- SA19466: NetBSD Sendmail Memory Corruption Vulnerability
- SA19676: Avaya CMS / IR Sendmail Memory Corruption Vulnerability
- SA19774: Sun Cobalt Sendmail Memory Corruption Vulnerability
- SA20723: IBM HMC Sendmail and OpenSSH Vulnerabilities
- SECTRACK ID: 1015801: Sendmail Race Condition in Signal Handler May Let Remote Users Trigger a Buffer Overflow to Execute Arbitrary Code
- SECTRACK ID: 1015807: (Sendmail.com Issues Fix) Sendmail Race Condition in Signal Handler May Let Remote Users Trigger a Buffer Overflow to Execute Arbitrary Code
- SECTRACK ID: 1015814: (IBM Issues Fix for AIX) Sendmail Race Condition in Signal Handler May Let Remote Users Trigger a Buffer Overflow to Execute Arbitrary Code
- SUSE-SA:2006:017: sendmail remote code execution
Platforms Affected:
- Debian Debian Linux 3.0
- Debian Debian Linux 3.1
- FreeBSD FreeBSD
- Gentoo Linux
- MandrakeSoft Mandrake Linux 2006
- MandrakeSoft Mandrake Linux 2006 X86_64
- MandrakeSoft Mandrake Linux LE2005
- MandrakeSoft Mandrake Linux LE2005 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 3.0
- MandrakeSoft Mandrake Multi Network Firewall 2.0
- Novell UnitedLinux 1.0
- OpenPKG OpenPKG 2.3
- OpenPKG OpenPKG 2.4
- OpenPKG OpenPKG 2.5
- OpenPKG OpenPKG CURRENT
- RedHat Enterprise Linux 2.1 ES
- RedHat Enterprise Linux 2.1 AS
- RedHat Enterprise Linux 2.1 WS
- RedHat Enterprise Linux 3 Desktop
- RedHat Enterprise Linux 3 ES
- RedHat Enterprise Linux 3 AS
- RedHat Enterprise Linux 3 WS
- RedHat Enterprise Linux 4 ES
- RedHat Enterprise Linux 4 WS
- RedHat Enterprise Linux 4 AS
- RedHat Enterprise Linux 4 Desktop
- RedHat Linux Advanced Workstation 2.1 Itanium
- Sendmail Sendmail 8.13
- Sendmail Sendmail 8.13.1
- Sendmail Sendmail 8.13.2
- Sendmail Sendmail 8.13.3
- Sendmail Sendmail 8.13.4
- Sendmail Sendmail 8.13.5
- SGI Advanced Linux Environment 3
- Slackware Slackware Linux 10.0
- Slackware Slackware Linux 10.1
- Slackware Slackware Linux 8.1
- Slackware Slackware Linux 9.0
- Slackware Slackware Linux 9.1
- Sun Cobalt RaQ 4
- Sun Cobalt RaQ 550
- Sun Cobalt RaQ XTR
- Sun Solaris 10 x86
- Sun Solaris 10 SPARC
- Sun Solaris 8 x86
- Sun Solaris 8 SPARC
- Sun Solaris 9 SPARC
- Sun Solaris 9 x86
- SuSE Linux Enterprise Server 8
- SUSE SuSE Linux 10.0
- SUSE SuSE Linux 9.1
- SUSE SuSE Linux 9.2
- SUSE SuSE Linux 9.3
- SuSE SuSE SLES 9
- Turbolinux Turbolinux 7 Server
- Turbolinux Turbolinux 8 Server
- Turbolinux Turbolinux 8 Workstation
- Turbolinux Turbolinux Appliance Server 1.0 Hosting Ed
- Turbolinux Turbolinux Appliance Server 1.0 Workgroup Ed
- Turbolinux Turbolinux Appliance Server 2.0
Reported:
Mar 22, 2006
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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 IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.