Gentoo: GLSA-200903-39: pam_krb5: Privilege escalation
Summary
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Gentoo Linux Security Advisory GLSA 200903-39 https://security.gentoo.org/
Severity: High Title: pam_krb5: Privilege escalation Date: March 25, 2009 Bugs: #257075 ID: 200903-39
Synopsis ======= Two vulnerabilities in pam_krb5 might allow local users to elevate their privileges or overwrite arbitrary files.
Background ========= pam_krb5 is a a Kerberos v5 PAM module.
Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-auth/pam_krb5 < 3.12 >= 3.12
========== The following vulnerabilities were discovered:
* pam_krb5 does not properly initialize the Kerberos libraries for setuid use (CVE-2009-0360).
* Derek Chan reported that calls to pam_setcred() are not properly handled when running setuid (CVE-2009-0361).
Impact ===== A local attacker could set an environment variable to point to a specially crafted Kerberos configuration file and launch a PAM-based setuid application to elevate privileges, or change ownership and overwrite arbitrary files.
Workaround ========= There is no known workaround at this time.
Resolution ========= All pam_krb5 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=sys-auth/pam_krb5-3.12"
References ========= [ 1 ] CVE-2009-0360 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0360 [ 2 ] CVE-2009-0361 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0361
Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/200903-39
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 https://bugs.gentoo.org/.
License ====== Copyright 2009 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.
https://creativecommons.org/licenses/by-sa/2.5/
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Resolution
References
Availability
Concerns
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