Executive Summary
| Summary | |
|---|---|
| Title | cyrus-imapd security update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2011:0859 | First vendor Publication | 2011-06-08 |
| Vendor | RedHat | Last vendor Modification | 2011-06-08 |
| Severity (Vendor) | Moderate | Revision | 01 |
Security-Database Scoring CVSS v3
| Cvss vector : N/A | |||
|---|---|---|---|
| Overall CVSS Score | NA | ||
| Base Score | NA | Environmental Score | NA |
| impact SubScore | NA | Temporal Score | NA |
| Exploitabality Sub Score | NA | ||
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:H/Au:N/C:P/I:P/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 5.1 | Attack Range | Network |
| Cvss Impact Score | 6.4 | Attack Complexity | High |
| Cvss Expoit Score | 4.9 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Problem Description: Updated cyrus-imapd packages that fix one security issue are now available for Red Hat Enterprise Linux 4, 5, and 6. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. 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 3. Description: 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. 4. 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 5. Bugs fixed (http://bugzilla.redhat.com/): 705288 - CVE-2011-1926 cyrus-imapd: STARTTLS plaintext command injection |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2011-0859.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-264 | Permissions, Privileges, and Access Controls |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:12605 | |||
| Oval ID: | oval:org.mitre.oval:def:12605 | ||
| Title: | DSA-2242-1 cyrus-imapd-2.2 -- implementation error | ||
| Description: | It was discovered that the STARTTLS implementation of the Cyrus IMAP server does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted IMAP, LMTP, NNTP and POP3 sessions by sending a cleartext command that is processed after TLS is in place. | ||
| Family: | unix | Class: | patch |
| Reference(s): | DSA-2242-1 CVE-2011-1926 | Version: | 5 |
| Platform(s): | Debian GNU/Linux 5.0 Debian GNU/Linux 6.0 Debian GNU/kFreeBSD 6.0 | Product(s): | cyrus-imapd-2.2 |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:18480 | |||
| Oval ID: | oval:org.mitre.oval:def:18480 | ||
| Title: | DSA-2258-1 kolab-cyrus-imapd - implementation error | ||
| Description: | It was discovered that the STARTTLS implementation of the Kolab Cyrus IMAP server does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted IMAP, LMTP, NNTP and POP3 sessions by sending a cleartext command that is processed after TLS is in place. | ||
| Family: | unix | Class: | patch |
| Reference(s): | DSA-2258-1 CVE-2011-1926 | Version: | 7 |
| Platform(s): | Debian GNU/Linux 6.0 Debian GNU/kFreeBSD 6.0 Debian GNU/Linux 5.0 | Product(s): | kolab-cyrus-imapd |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:21616 | |||
| Oval ID: | oval:org.mitre.oval:def:21616 | ||
| Title: | RHSA-2011:0859: cyrus-imapd security update (Moderate) | ||
| Description: | The STARTTLS implementation in Cyrus IMAP Server before 2.4.7 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2011:0859-01 CVE-2011-1926 CESA-2011:0859-CentOS 5 | Version: | 6 |
| Platform(s): | Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 5 CentOS Linux 5 | Product(s): | cyrus-imapd |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:23310 | |||
| Oval ID: | oval:org.mitre.oval:def:23310 | ||
| Title: | ELSA-2011:0859: cyrus-imapd security update (Moderate) | ||
| Description: | The STARTTLS implementation in Cyrus IMAP Server before 2.4.7 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011:0859-01 CVE-2011-1926 | Version: | 6 |
| Platform(s): | Oracle Linux 6 | Product(s): | cyrus-imapd |
| Definition Synopsis: | |||
CPE : Common Platform Enumeration
OpenVAS Exploits
| Date | Description |
|---|---|
| 2012-07-30 | Name : CentOS Update for cyrus-imapd CESA-2011:0859 centos4 x86_64 File : nvt/gb_CESA-2011_0859_cyrus-imapd_centos4_x86_64.nasl |
| 2012-07-30 | Name : CentOS Update for cyrus-imapd CESA-2011:0859 centos5 x86_64 File : nvt/gb_CESA-2011_0859_cyrus-imapd_centos5_x86_64.nasl |
| 2011-10-14 | Name : Fedora Update for cyrus-imapd FEDORA-2011-13869 File : nvt/gb_fedora_2011_13869_cyrus-imapd_fc14.nasl |
| 2011-08-18 | Name : CentOS Update for cyrus-imapd CESA-2011:0859 centos4 i386 File : nvt/gb_CESA-2011_0859_cyrus-imapd_centos4_i386.nasl |
| 2011-08-09 | Name : CentOS Update for cyrus-imapd CESA-2011:0859 centos5 i386 File : nvt/gb_CESA-2011_0859_cyrus-imapd_centos5_i386.nasl |
| 2011-08-03 | Name : Debian Security Advisory DSA 2242-1 (cyrus-imapd-2.2) File : nvt/deb_2242_1.nasl |
| 2011-08-03 | Name : Debian Security Advisory DSA 2258-1 (kolab-cyrus-imapd) File : nvt/deb_2258_1.nasl |
| 2011-06-20 | Name : Fedora Update for cyrus-imapd FEDORA-2011-7193 File : nvt/gb_fedora_2011_7193_cyrus-imapd_fc13.nasl |
| 2011-06-20 | Name : Fedora Update for cyrus-imapd FEDORA-2011-7217 File : nvt/gb_fedora_2011_7217_cyrus-imapd_fc14.nasl |
| 2011-06-10 | Name : RedHat Update for cyrus-imapd RHSA-2011:0859-01 File : nvt/gb_RHSA-2011_0859-01_cyrus-imapd.nasl |
| 2011-06-03 | Name : Mandriva Update for cyrus-imapd MDVSA-2011:100 (cyrus-imapd) File : nvt/gb_mandriva_MDVSA_2011_100.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 72186 | Cyrus IMAP Server STARTTLS Arbitrary Plaintext Command Injection Cyrus IMAP Server contains a flaw related to the TLS implementation failing to properly clear transport layer buffers when changing from plaintext to ciphertext upon receipt of the 'STARTTLS' command. This may allow a remote attacker to inject arbitrary plaintext data which will be executed upon transition to ciphertext. |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2014-06-13 | Name : The remote openSUSE host is missing a security update. File : suse_11_3_cyrus-imapd-110620.nasl - Type : ACT_GATHER_INFO |
| 2014-06-13 | Name : The remote openSUSE host is missing a security update. File : suse_11_4_cyrus-imapd-110620.nasl - Type : ACT_GATHER_INFO |
| 2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-0859.nasl - Type : ACT_GATHER_INFO |
| 2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110608_cyrus_imapd_on_SL4_x.nasl - Type : ACT_GATHER_INFO |
| 2011-12-13 | Name : The remote SuSE 10 host is missing a security-related patch. File : suse_cyrus-imapd-7583.nasl - Type : ACT_GATHER_INFO |
| 2011-07-19 | Name : The remote SuSE 9 host is missing a security-related patch. File : suse9_12776.nasl - Type : ACT_GATHER_INFO |
| 2011-07-19 | Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_cyrus-imapd-110620.nasl - Type : ACT_GATHER_INFO |
| 2011-07-19 | Name : The remote SuSE 10 host is missing a security-related patch. File : suse_cyrus-imapd-7584.nasl - Type : ACT_GATHER_INFO |
| 2011-06-13 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-2258.nasl - Type : ACT_GATHER_INFO |
| 2011-06-12 | Name : The remote Fedora host is missing a security update. File : fedora_2011-7193.nasl - Type : ACT_GATHER_INFO |
| 2011-06-12 | Name : The remote Fedora host is missing a security update. File : fedora_2011-7217.nasl - Type : ACT_GATHER_INFO |
| 2011-06-10 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-2242.nasl - Type : ACT_GATHER_INFO |
| 2011-06-09 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2011-0859.nasl - Type : ACT_GATHER_INFO |
| 2011-06-09 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-0859.nasl - Type : ACT_GATHER_INFO |
| 2011-05-25 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2011-100.nasl - Type : ACT_GATHER_INFO |
| 2011-03-10 | Name : The remote mail service allows plaintext command injection while negotiating ... File : imap4_starttls_plaintext_injection.nasl - Type : ACT_ATTACK |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:54:47 |
|
