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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0724 krb5 security update 1 August 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: krb5 Publisher: Debian Operating System: Debian GNU/Linux 6 Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2012-1015 CVE-2012-1014 Reference: ESB-2012.0723 Original Bulletin: http://www.debian.org/security/2012/dsa-2518 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-2518-1 security@debian.org http://www.debian.org/security/ Yves-Alexis Perez July 31, 2012 http://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : krb5 Vulnerability : denial of service and remote code execution Problem type : remote Debian-specific: no CVE ID : CVE-2012-1014 CVE-2012-1015 Debian Bug : 683429 Emmanuel Bouillon from NCI Agency discovered multiple vulnerabilities in MIT Kerberos, a daemon implementing the network authentication protocol. CVE-2012-1014 By sending specially crafted AS-REQ (Authentication Service Request) to a KDC (Key Distribution Center), an attacker could make it free an uninitialized pointer, corrupting the heap. This can lead to process crash or even arbitrary code execution. . This CVE only affects testing (wheezy) and unstable (sid) distributions. CVE-2012-1015 By sending specially crafted AS-REQ to a KDC, an attacker could make it dereference an uninitialized pointer, leading to process crash or even arbitrary code execution In both cases, arbitrary code execution is believed to be difficult to achieve, but might not be impossible. For the stable distribution (squeeze), this problem has been fixed in version 1.8.3+dfsg-4squeeze6. For the testing distribution (wheezy), this problem has been fixed in version 1.10.1+dfsg-2. For the unstable distribution (sid), this problem has been fixed in version 1.10.1+dfsg-2. We recommend that you upgrade your krb5 packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: http://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBCgAGBQJQGDhVAAoJEDBVD3hx7wuohhAQAMvfn2GpJ183+cRUkU2BU0nb pNwX+RyE9PzxmROfnWQK+B5e4d/p85WVI+JIsqxRTdSU9exQW7Ix0KecFUOIDpih UapoKsfyAsq1MuHP+zzhzITrjn/N0nLAWVLmhEiGYAXsSqhF9ANtHqEAVl4LMBFs yM8mIOT1t2oBbWrdqDEObqzCHuXcF6zxOiO9V55yBima8qgKJaMfdwhexVCNgy2H s07Z/Bip1X0MOQVt39OQ8gjpxLVKjCkLIzXKnGahFcthMxbT7JUFlgkqOUEhb8hz C4aMWQ7VmaVyHRMoNQ36nbEeFOa1lbtFAUG1NtIAK4xc3yuUgzUAuiABtrlzOEE+ isTWYIFX6pAxxjmjDLXs+WzbsdbUg2WNpAT7yMlYpr8X1Fbspc4Q4cotXvOkxMDy ZiztFrxLIwRzPKqz3mAR2aMMv+C15jAAkfI8TWY44uT7Nao8r7SkghhhW9XTHq/u kjamNAqkdbeUN6Uv6LjKqtWcFHNDp/ybopx4eEAs9g49iYHjhIxeYSuZi9ezt69m 3aHE1+wRyQkYRXGTgQCSsEsQTmKG/GYsxbXz7AHTHeBKysXhozgXaVUP7mC4PhP6 IQl3TNPS7+ICDR/WmNecmDXnJSjiLr2Cxu05s6kdZufk2YuUmLKsDOwqdUK9zs5L akNPAoiNvi30U+3tc07c =lkou - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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