ID

VAR-200701-0340

CVE

CVE-2007-0613

TITLE

Apple Mac OS X fails to properly handle corrupted Universal Mach-O Binaries

DESCRIPTION

The Bonjour functionality in mDNSResponder, iChat 3.1.6, and InstantMessage framework 428 in Apple Mac OS X 10.4.8 does not check for duplicate entries when adding newly discovered available contacts, which allows remote attackers to cause a denial of service (disrupted communication) via a flood of duplicate _presence._tcp mDNS queries. A vulnerability in the way Apple Mac OS X handles corrupted Universal Mach-O Binaries may result in execution of arbitrary code or denial of service. Apple iChat is prone to multiple remote denial-of-service vulnerabilities. These issues affect the Bonjour functionality. Apple iChat 3.1.6 is reported affected; other versions may be vulnerable as well. Apple iChat is a video chat tool bundled with Apple's family of operating systems. Several denial-of-service vulnerabilities exist in iChat's Bonjour feature, which allows automatic discovery of computers. There are no restrictions on finding available contacts via mDNS queries, iChat will add the broadcasted _presence._tcp record even if the contact does not exist, so a malicious user can broadcast a fake record so that iChat users using Bonjour cannot discover more peers, unable to communicate reliably. In addition, the iChat agent may have an exception when processing a specially crafted TXT key hash, resulting in a crash when sending a SIGTRAP signal to the process. Trying to start iChat Bonjour again will fail because mDNSResponder keeps a specially crafted record. ---------------------------------------------------------------------- To improve our services to our customers, we have made a number of additions to the Secunia Advisories and have started translating the advisories to German. The improvements will help our customers to get a better understanding of how we reached our conclusions, how it was rated, our thoughts on exploitation, attack vectors, and scenarios. This includes: * Reason for rating * Extended description * Extended solution * Exploit code or links to exploit code * Deep links Read the full description: http://corporate.secunia.com/products/48/?r=l Contact Secunia Sales for more information: http://corporate.secunia.com/how_to_buy/15/?r=l ---------------------------------------------------------------------- TITLE: Mac OS X Mach-O Universal Binary Memory Corruption SECUNIA ADVISORY ID: SA23088 VERIFY ADVISORY: http://secunia.com/advisories/23088/ CRITICAL: Less critical IMPACT: DoS, System access WHERE: Local system OPERATING SYSTEM: Apple Macintosh OS X http://secunia.com/product/96/ DESCRIPTION: LMH has reported a vulnerability in Mac OS X, which can be exploited by malicious, local users to cause a DoS (Denial of Service) or potentially gain escalated privileges. The vulnerability is caused due to an error in the fatfile_getarch2() function. This can be exploited to cause an integer overflow and may potentially allow execution of arbitrary code with kernel privileges via a specially crafted Mach-O Universal binary. The vulnerability is reported in a fully patched Mac OS X (2006-11-26). SOLUTION: Grant only trusted users access to affected systems. PROVIDED AND/OR DISCOVERED BY: LMH ORIGINAL ADVISORY: http://projects.info-pull.com/mokb/MOKB-26-11-2006.html ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org ----------------------------------------------------------------------

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

lack of information

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

LMH lmh@info-pull.com

SOURCES

LAST UPDATE DATE

2024-09-19T21:28:04.282000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE