-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200710-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: RPCSEC_GSS library: Buffer overflow Date: October 04, 2007 Bugs: #191479 ID: 200710-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A buffer overflow vulnerability has been discovered in librpcsecgss. Background ========== librpcsecgss is an implementation of RPCSEC_GSS for secure RPC communications. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-libs/librpcsecgss < 0.16 >= 0.16 Description =========== A stack based buffer overflow has been discovered in the svcauth_gss_validate() function in file lib/rpc/svc_auth_gss.c when processing an overly long string in a RPC message. Impact ====== A remote attacker could send a specially crafted RPC request to an application relying on this library, e.g NFSv4 or Kerberos (GLSA-200709-01), resulting in the execution of arbitrary code with the privileges of the user running the application. Workaround ========== There is no known workaround at this time. Resolution ========== All librpcsecgss users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-libs/librpcsecgss-0.16" References ========== [ 1 ] CVE-2007-3999 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3999 [ 2 ] GLSA-200709-01 http://www.gentoo.org/security/en/glsa/glsa-200709-01.xml Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200710-01.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHBV8SuhJ+ozIKI5gRAnlrAJ9JirMsZLbV84pfiUSMlrRKsegWwACeP6+6 TdRzktElA4nj+G1wK9gqtz4= =/FBW -----END PGP SIGNATURE-----