-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 _______________________________________________________________________ Mandriva Linux Security Advisory MDVSA-2012:115 http://www.mandriva.com/security/ _______________________________________________________________________ Package : dhcp Date : July 26, 2012 Affected: 2011. _______________________________________________________________________ Problem Description: Multiple vulnerabilities has been discovered and corrected in ISC DHCP: An unexpected client identifier parameter can cause the ISC DHCP daemon to segmentation fault when running in DHCPv6 mode, resulting in a denial of service to further client requests. In order to exploit this condition, an attacker must be able to send requests to the DHCP server (CVE-2012-3570 An error in the handling of malformed client identifiers can cause a DHCP server running affected versions (see Impact) to enter a state where further client requests are not processed and the server process loops endlessly, consuming all available CPU cycles. Under normal circumstances this condition should not be triggered, but a non-conforming or malicious client could deliberately trigger it in a vulnerable server. In order to exploit this condition an attacker must be able to send requests to the DHCP server (CVE-2012-3571 Two memory leaks have been found and fixed in ISC DHCP. Both are reproducible when running in DHCPv6 mode (with the -6 command-line argument.) The first leak is confirmed to only affect servers operating in DHCPv6 mode, but based on initial code analysis the second may theoretically affect DHCPv4 servers (though this has not been demonstrated.) (CVE-2012-3954). The updated packages have been upgraded to the latest version (4.2.4-P1) which is not affected by these issues. _______________________________________________________________________ References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3570 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3571 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3954 _______________________________________________________________________ Updated Packages: Mandriva Linux 2011: 5153e3eb1b4ceca9f800544d13ef6872 2011/i586/dhcp-client-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm 8c6117c838ec86e12abe5ea1efa12f85 2011/i586/dhcp-common-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm 03dd3ee3fe46a4bc255a20bc0a3f4edd 2011/i586/dhcp-devel-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm e6fb5efee36e445626e3e52314cb24e1 2011/i586/dhcp-doc-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm 4da38e33e8542ae24e59f475a216dc88 2011/i586/dhcp-relay-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm af313c55824cd839740cd03556b43650 2011/i586/dhcp-server-4.2.4-0.P1.1.1-mdv2011.0.i586.rpm c6766b7bfe76fbbbfe19df2a08863c47 2011/SRPMS/dhcp-4.2.4-0.P1.1.1.src.rpm Mandriva Linux 2011/X86_64: d59247271566158ed3ce91748e8bd244 2011/x86_64/dhcp-client-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm 66e0771c5304de4550560bd39aa40f77 2011/x86_64/dhcp-common-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm 37d678da37bb3b21a14a1e68619342de 2011/x86_64/dhcp-devel-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm 5311a79668ab721cd829061f48dbbf39 2011/x86_64/dhcp-doc-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm 5c59c00623d6b3a3a2130a5a467a9d33 2011/x86_64/dhcp-relay-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm cc93817435d581230d1e7fcee425abb3 2011/x86_64/dhcp-server-4.2.4-0.P1.1.1-mdv2011.0.x86_64.rpm c6766b7bfe76fbbbfe19df2a08863c47 2011/SRPMS/dhcp-4.2.4-0.P1.1.1.src.rpm _______________________________________________________________________ To upgrade automatically use MandrivaUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. All packages are signed by Mandriva for security. You can obtain the GPG public key of the Mandriva Security Team by executing: gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98 You can view other update advisories for Mandriva Linux at: http://www.mandriva.com/security/advisories If you want to report vulnerabilities, please contact security_(at)_mandriva.com _______________________________________________________________________ Type Bits/KeyID Date User ID pub 1024D/22458A98 2000-07-10 Mandriva Security Team <security*mandriva.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iD8DBQFQEUxWmqjQ0CJFipgRAnMbAKDbViRMHizm7ES7BCmCya4K53J1BQCeLl+G mS5VX3nUx8CROAYnnG6xQl8= =EANl -----END PGP SIGNATURE-----
