5.1 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:P/I:P/A:P
0.011 Low
EPSS
Percentile
84.3%
CentOS Errata and Security Advisory CESA-2011:0859
The cyrus-imapd packages contain a high-performance mail server with IMAP,
POP3, NNTP, and Sieve support.
It was discovered that cyrus-imapd did not flush the received commands
buffer after switching to TLS encryption for IMAP, LMTP, NNTP, and POP3
sessions. A man-in-the-middle attacker could use this flaw to inject
protocol commands into a victim’s TLS session initialization messages. This
could lead to those commands being processed by cyrus-imapd, potentially
allowing the attacker to steal the victim’s mail or authentication
credentials. (CVE-2011-1926)
Users of cyrus-imapd are advised to upgrade to these updated packages,
which contain a backported patch to correct this issue. After installing
the update, cyrus-imapd will be restarted automatically.
Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2011-August/079835.html
https://lists.centos.org/pipermail/centos-announce/2011-August/079836.html
https://lists.centos.org/pipermail/centos-announce/2011-June/079773.html
https://lists.centos.org/pipermail/centos-announce/2011-June/079774.html
Affected packages:
cyrus-imapd
cyrus-imapd-devel
cyrus-imapd-murder
cyrus-imapd-nntp
cyrus-imapd-perl
cyrus-imapd-utils
perl-Cyrus
Upstream details at:
https://access.redhat.com/errata/RHSA-2011:0859
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
CentOS | 5 | x86_64 | cyrus-imapd | < 2.3.7-7.el5_6.4 | cyrus-imapd-2.3.7-7.el5_6.4.x86_64.rpm |
CentOS | 5 | i386 | cyrus-imapd-devel | < 2.3.7-7.el5_6.4 | cyrus-imapd-devel-2.3.7-7.el5_6.4.i386.rpm |
CentOS | 5 | x86_64 | cyrus-imapd-devel | < 2.3.7-7.el5_6.4 | cyrus-imapd-devel-2.3.7-7.el5_6.4.x86_64.rpm |
CentOS | 5 | x86_64 | cyrus-imapd-perl | < 2.3.7-7.el5_6.4 | cyrus-imapd-perl-2.3.7-7.el5_6.4.x86_64.rpm |
CentOS | 5 | x86_64 | cyrus-imapd-utils | < 2.3.7-7.el5_6.4 | cyrus-imapd-utils-2.3.7-7.el5_6.4.x86_64.rpm |
CentOS | 5 | i386 | cyrus-imapd | < 2.3.7-7.el5_6.4 | cyrus-imapd-2.3.7-7.el5_6.4.i386.rpm |
CentOS | 5 | i386 | cyrus-imapd-devel | < 2.3.7-7.el5_6.4 | cyrus-imapd-devel-2.3.7-7.el5_6.4.i386.rpm |
CentOS | 5 | i386 | cyrus-imapd-perl | < 2.3.7-7.el5_6.4 | cyrus-imapd-perl-2.3.7-7.el5_6.4.i386.rpm |
CentOS | 5 | i386 | cyrus-imapd-utils | < 2.3.7-7.el5_6.4 | cyrus-imapd-utils-2.3.7-7.el5_6.4.i386.rpm |
CentOS | 4 | i386 | cyrus-imapd | < 2.2.12-15.el4_8 | cyrus-imapd-2.2.12-15.el4_8.i386.rpm |