-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ZDI-12-137 : Apple Mac OS X libsecurity_cdsa_plugin Malloc Integer Truncation Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-12-137 August 17, 2012
- -- CVE ID: CVE-2012-0651 - -- CVSS: 10, AV:N/AC:L/Au:N/C:C/I:C/A:C - -- Affected Vendors: Apple - -- Affected Products: Apple OS X - -- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Mac OSX. Authentication is not required to exploit this vulnerability. The flaw exists within the libsecurity_cdsa_plugin which implements routines defined in libsecurity_cssm. The library defines an allocation routine as having an argument type uint32. The implemented methods in the cdsa_plugin accept parameter having type size_t, this value is truncated from 64 bits to 32 bits when being passed to the library routine. This can lead to an underallocated memory region and ultimately a write out of bounds. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the process. - -- Vendor Response: Apple has issued an update to correct this vulnerability. More details can be found at: http://support.apple.com/kb/HT1222 - -- Disclosure Timeline: 2011-11-29 - Vulnerability reported to vendor 2012-08-17 - Coordinated public release of advisory - -- Credit: This vulnerability was discovered by: * aazubel - -- About the Zero Day Initiative (ZDI): Established by TippingPoint, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities. Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at: http://www.zerodayinitiative.com The ZDI is unique in how the acquired vulnerability information is used. TippingPoint does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, TippingPoint provides its customers with zero day protection through its intrusion prevention technology. Explicit details regarding the specifics of the vulnerability are not exposed to any parties until an official vendor patch is publicly available. Furthermore, with the altruistic aim of helping to secure a broader user base, TippingPoint provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product. Our vulnerability disclosure policy is available online at: http://www.zerodayinitiative.com/advisories/disclosure_policy/ Follow the ZDI on Twitter: http://twitter.com/thezdi -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 10.2.0 (Build 1950) Charset: utf-8 wsBVAwUBUC5j51VtgMGTo1scAQJVbAf/eZ0SlfaZYtTyV0Iy6YUeeOD9mcRc3pHU 2A1qvoQryl5xDHvLh+m/iZZ+a3oQb8AtqWwRfZb4qpXA3cXIbd+qOtCU3yYX3oso 5h9Ag8iAbn79P+tMoWu0d6iwJIuw4RHMeoNtSnQ+Lzl8lwfJo7OItIaoXKEgiydS jTv69en5X65Fni0ofsXvKrZ4lu/PBZahhegy1Jd/5LmGCLTp6hRlhlhjmSD2CPBg yBYfQy844mfupGBSkgkUsjCt8kMJn0iDwW+NldfRGkxKUynoxCMV4C0shXe7lkfs x8ZDEe/7xy6R7+Qk/PBusKfBwWUfV2ns03EUTpgibKQxa+4wsu0uGw== =nb/B -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
