CUPS SNMP asn1_get_string() buffer overflow
| cups-asn1getstring-bo (39101) |  High Risk |
Description:
CUPS (Common UNIX Printing System) is vulnerable to a stack-based buffer overflow, caused by an integer signedness error in the asn1_get_string function. By sending a specially-crafted SNMP reply containing negative length values in an asn1 encoded string, a remote attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges or cause the service to crash.
Platforms Affected:
- Apple, CUPS 1.3.4 and prior
- Apple, Mac OS X 10.5.1
- Apple, Mac OS X Server 10.5.1
- Canonical, Ubuntu 6.06 LTS
- Canonical, Ubuntu 6.10
- Canonical, Ubuntu 7.04
- Canonical, Ubuntu 7.10
- Debian, Debian Linux 4.0
- Gentoo, Linux
- MandrakeSoft, Mandrake Linux 2007 X86_64
- MandrakeSoft, Mandrake Linux 2007
- MandrakeSoft, Mandrake Linux 2007.1 X86_64
- MandrakeSoft, Mandrake Linux 2007.1
- MandrakeSoft, Mandrake Linux 2008.0
- MandrakeSoft, Mandrake Linux 2008.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 4.0
- Novell, Linux Desktop 9
- Novell, Linux POS 9
- Novell, Open Enterprise Server
- Novell, Open Enterprise Server
- Novell, OpenSUSE 10.2
- Novell, OpenSUSE 10.3
- Novell, SUSE Linux Enterprise Desktop 10 SP1
- Novell, SUSE Linux Enterprise Server 10
- Novell, SUSE Linux Enterprise Server 10 SP1
- SuSE, SuSE SLES 9
Remedy:
Upgrade to the latest version of CUPS (1.3.5 or later), available from the CUPS Web site. See References.
For Apple Mac OS X:
Apply Apple Security Update 2007-009 v1.1, available from the Apple Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
Consequences:
Gain Access
References:
- Apple Web site, About Security Update 2007-009 at http://docs.info.apple.com/article.html?artnum=307179.
- Apple Web site, About Security Update 2007-009 v1.1 at http://docs.info.apple.com/article.html?artnum=307224.
- CUPS STR #2589, SNMP backend integer underflow/stack overflow in asn1_get_string() at http://www.cups.org/str.php?L2589.
- CUPS Web site, Download - Common UNIX Printing System at http://www.cups.org/software.php.
- BID-26910: Apple Mac OS X v10.5.1 2007-009 Multiple Security Vulnerabilities
- BID-26917: Common UNIX Printing System SNMP 'asn1_get_string()' Remote Buffer Overflow Vulnerability
- CVE-2007-5849: Integer underflow in the asn1_get_string function in the SNMP back end (backend/snmp.c) for CUPS 1.2 through 1.3.4 allows remote attackers to execute arbitrary code via a crafted SNMP response that triggers a stack-based buffer overflow.
- DSA-1437: cupsys -- several vulnerabilities
- GLSA-200712-14: CUPS: Multiple vulnerabilities
- MDVSA-2008:036: Updated CUPS packages fix SNMP vulnerability
- SA28129: CUPS SNMP Backend "asn1_get_string()" Signedness Vulnerability
- SA28136: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
- SUSE-SA:2008:002: SUSE Security Announcement
- SUSE-SR:2008:002: SUSE Security Summary Report
- USN-563-1: CUPS vulnerabilities
- VUPEN/ADV-2007-4238: Apple Mac OS X Code Execution and Information Disclosure Vulnerabilities
- VUPEN/ADV-2007-4242: CUPS SNMP Backend asn1_get_string() Integer Underflow Vulnerability
Reported:
Dec 17, 2007
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