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Red Hat: 2011:1508-01 Moderate: cyrus-imapd Auth Bypass & NULL Issue

red hat
Calendar Grey December 1, 2011
Dist Redhat Esm H88
The security advisory RHSA-2011:1508 from Red Hat outlines a moderate update concerning cyrus-imapd that impacts several versions of RHEL.
Updated cyrus-imapd packages that fix two security issues are now available for Red Hat Enterprise Linux 4, 5, and 6

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259

Summary

The cyrus-imapd packages contain a high-performance mail server with IMAP, POP3, NNTP, and Sieve support.
An authentication bypass flaw was found in the cyrus-imapd NNTP server, nntpd. A remote user able to use the nntpd service could use this flaw to read or post newsgroup messages on an NNTP server configured to require user authentication, without providing valid authentication credentials. (CVE-2011-3372)
A NULL pointer dereference flaw was found in the cyrus-imapd IMAP server, imapd. A remote attacker could send a specially-crafted mail message to a victim that would possibly prevent them from accessing their mail normally, if they were using an IMAP client that relies on the server threading IMAP feature. (CVE-2011-3481)
Red Hat would like to thank the Cyrus IMAP project for reporting the CVE-2011-3372 issue. Upstream acknowledges Stefan Cornelius of Secunia Research as the original reporter of CVE-2011-3372.
Users of cyrus-imapd are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the update, cyrus-imapd will be restarted automatically.

Topics%20covered

Topics Covered

security advisory moderate Red Hat Enterprise Linux cyrus-imapd NULL pointer mail server authentication bypass

References

https://access.redhat.com/security/cve/CVE-2011-3372 https://access.redhat.com/security/cve/CVE-2011-3481 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux AS version 4:
Source:
i386: cyrus-imapd-2.2.12-17.el4.i386.rpm cyrus-imapd-debuginfo-2.2.12-17.el4.i386.rpm cyrus-imapd-devel-2.2.12-17.el4.i386.rpm cyrus-imapd-murder-2.2.12-17.el4.i386.rpm cyrus-imapd-nntp-2.2.12-17.el4.i386.rpm cyrus-imapd-utils-2.2.12-17.el4.i386.rpm perl-Cyrus-2.2.12-17.el4.i386.rpm
ia64: cyrus-imapd-2.2.12-17.el4.ia64.rpm cyrus-imapd-debuginfo-2.2.12-17.el4.ia64.rpm cyrus-imapd-devel-2.2.12-17.el4.ia64.rpm cyrus-imapd-murder-2.2.12-17.el4.ia64.rpm cyrus-imapd-nntp-2.2.12-17.el4.ia64.rpm cyrus-imapd-utils-2.2.12-17.el4.ia64.rpm perl-Cyrus-2.2.12-17.el4.ia64.rpm
ppc: cyrus-imapd-2.2.12-17.el4.ppc.rpm cyrus-imapd-debuginfo-2.2.12-17.el4.ppc.rpm cyrus-imapd-devel-2.2.12-17.el4.ppc.rpm cyrus-imapd-murder-2.2.12-17.el4.ppc.rpm cyrus-imapd-nntp-2.2.12-17.el4.ppc.rpm cyrus-imapd-utils-2.2.12-17.el4.ppc.rpm perl-Cyrus-2.2.12-17.el4.ppc.rpm
s390: cyrus-imapd-2.2.12-17.el4.s390.rpm cyrus-imapd-debuginfo-2.2.12-17.el4.s390.rpm cyrus-imapd-devel-2.2.12-17.el4.s390.rpm cyrus-imapd-murder-2.2.12-17.el4.s390.rpm cyrus-imapd-nntp-2.2.12-17.el4.s390.rpm cyrus-imapd-utils-2.2.12-17.el4.s390.rpm perl-Cyrus-2.2.12-17.el4.s390.rpm
s390x: cyrus-imapd-2.2.12-17.el4.s390x.rpm cyrus-imapd-debuginfo-2.2.12-17.el4.s390x.rpm

Read the Full Advisory


Advisory ID: RHSA-2011:1508-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:1508.html
Issue date: 2011-12-01

Topic

Updated cyrus-imapd packages that fix two security issues are now availablefor Red Hat Enterprise Linux 4, 5, and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat Enterprise Linux cyrus-imapd NULL pointer mail server authentication bypass

Relevant Releases Architectures

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

738391 - CVE-2011-3481 cyrus-imapd: NULL pointer dereference via crafted References header in email

740822 - CVE-2011-3372 cyrus-imapd: nntpd authentication bypass

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