Vulnerabilities > CVE-2014-3430 - Improper Authentication vulnerability in Dovecot
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
PARTIAL Summary
Dovecot 1.1 before 2.2.13 and dovecot-ee before 2.1.7.7 and 2.2.x before 2.2.12.12 does not properly close old connections, which allows remote attackers to cause a denial of service (resource consumption) via an incomplete SSL/TLS handshake for an IMAP/POP3 connection.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Authentication Abuse An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker. This attack may exploit assumptions made by the target's authentication procedures, such as assumptions regarding trust relationships or assumptions regarding the generation of secret values. This attack differs from Authentication Bypass attacks in that Authentication Abuse allows the attacker to be certified as a valid user through illegitimate means, while Authentication Bypass allows the user to access protected material without ever being certified as an authenticated user. This attack does not rely on prior sessions established by successfully authenticating users, as relied upon for the "Exploitation of Session Variables, Resource IDs and other Trusted Credentials" attack patterns.
- Exploiting Trust in Client (aka Make the Client Invisible) An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
- Utilizing REST's Trust in the System Resource to Register Man in the Middle This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to place man in the middle once SSL is terminated. Rest applications premise is that they leverage existing infrastructure to deliver web services functionality. An example of this is a Rest application that uses HTTP Get methods and receives a HTTP response with an XML document. These Rest style web services are deployed on existing infrastructure such as Apache and IIS web servers with no SOAP stack required. Unfortunately from a security standpoint, there frequently is no interoperable identity security mechanism deployed, so Rest developers often fall back to SSL to deliver security. In large data centers, SSL is typically terminated at the edge of the network - at the firewall, load balancer, or router. Once the SSL is terminated the HTTP request is in the clear (unless developers have hashed or encrypted the values, but this is rare). The attacker can utilize a sniffer such as Wireshark to snapshot the credentials, such as username and password that are passed in the clear once SSL is terminated. Once the attacker gathers these credentials, they can submit requests to the web service provider just as authorized user do. There is not typically an authentication on the client side, beyond what is passed in the request itself so once this is compromised, then this is generally sufficient to compromise the service's authentication scheme.
- Man in the Middle Attack This type of attack targets the communication between two components (typically client and server). The attacker places himself in the communication channel between the two components. Whenever one component attempts to communicate with the other (data flow, authentication challenges, etc.), the data first goes to the attacker, who has the opportunity to observe or alter it, and it is then passed on to the other component as if it was never intercepted. This interposition is transparent leaving the two compromised components unaware of the potential corruption or leakage of their communications. The potential for Man-in-the-Middle attacks yields an implicit lack of trust in communication or identify between two components.
Nessus
NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2014-0790.NASL description Updated dovecot packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. 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. Dovecot is an IMAP server, written with security primarily in mind, for Linux and other UNIX-like systems. It also contains a small POP3 server. It supports mail in both the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. It was discovered that Dovecot did not properly discard connections trapped in the SSL/TLS handshake phase. A remote attacker could use this flaw to cause a denial of service on an IMAP/POP3 server by exhausting the pool of available connections and preventing further, legitimate connections to the IMAP/POP3 server to be made. (CVE-2014-3430) All dovecot users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the dovecot service will be restarted automatically. last seen 2020-06-01 modified 2020-06-02 plugin id 76244 published 2014-06-26 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/76244 title RHEL 6 / 7 : dovecot (RHSA-2014:0790) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Red Hat Security Advisory RHSA-2014:0790. The text # itself is copyright (C) Red Hat, Inc. # include("compat.inc"); if (description) { script_id(76244); script_version("1.12"); script_cvs_date("Date: 2019/10/24 15:35:38"); script_cve_id("CVE-2014-3430"); script_xref(name:"RHSA", value:"2014:0790"); script_name(english:"RHEL 6 / 7 : dovecot (RHSA-2014:0790)"); script_summary(english:"Checks the rpm output for the updated packages"); script_set_attribute( attribute:"synopsis", value:"The remote Red Hat host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "Updated dovecot packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. 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. Dovecot is an IMAP server, written with security primarily in mind, for Linux and other UNIX-like systems. It also contains a small POP3 server. It supports mail in both the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. It was discovered that Dovecot did not properly discard connections trapped in the SSL/TLS handshake phase. A remote attacker could use this flaw to cause a denial of service on an IMAP/POP3 server by exhausting the pool of available connections and preventing further, legitimate connections to the IMAP/POP3 server to be made. (CVE-2014-3430) All dovecot users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the dovecot service will be restarted automatically." ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2014:0790" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2014-3430" ); script_set_attribute(attribute:"solution", value:"Update the affected packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:dovecot"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:dovecot-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:dovecot-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:dovecot-mysql"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:dovecot-pgsql"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:dovecot-pigeonhole"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6.5"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.3"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.4"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.5"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.6"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.7"); script_set_attribute(attribute:"vuln_publication_date", value:"2014/05/14"); script_set_attribute(attribute:"patch_publication_date", value:"2014/06/25"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/26"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Red Hat Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("misc_func.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat"); os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat"); os_ver = os_ver[1]; if (! preg(pattern:"^(6|7)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 6.x / 7.x", "Red Hat " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu); yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo"); if (!empty_or_null(yum_updateinfo)) { rhsa = "RHSA-2014:0790"; yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa); if (!empty_or_null(yum_report)) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : yum_report ); exit(0); } else { audit_message = "affected by Red Hat security advisory " + rhsa; audit(AUDIT_OS_NOT, audit_message); } } else { flag = 0; if (rpm_check(release:"RHEL6", reference:"dovecot-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", reference:"dovecot-debuginfo-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"i686", reference:"dovecot-devel-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"dovecot-devel-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"dovecot-devel-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"i686", reference:"dovecot-mysql-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"dovecot-mysql-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"dovecot-mysql-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"i686", reference:"dovecot-pgsql-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"dovecot-pgsql-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"dovecot-pgsql-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"i686", reference:"dovecot-pigeonhole-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"s390x", reference:"dovecot-pigeonhole-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"dovecot-pigeonhole-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"RHEL7", reference:"dovecot-2.2.10-4.el7_0.1")) flag++; if (rpm_check(release:"RHEL7", reference:"dovecot-debuginfo-2.2.10-4.el7_0.1")) flag++; if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"dovecot-mysql-2.2.10-4.el7_0.1")) flag++; if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"dovecot-mysql-2.2.10-4.el7_0.1")) flag++; if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"dovecot-pgsql-2.2.10-4.el7_0.1")) flag++; if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"dovecot-pgsql-2.2.10-4.el7_0.1")) flag++; if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"dovecot-pigeonhole-2.2.10-4.el7_0.1")) flag++; if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"dovecot-pigeonhole-2.2.10-4.el7_0.1")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() + redhat_report_package_caveat() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dovecot / dovecot-debuginfo / dovecot-devel / dovecot-mysql / etc"); } }NASL family Fedora Local Security Checks NASL id FEDORA_2014-6338.NASL description - Fixed a DoS attack against imap/pop3-login processes. If SSL/TLS handshake was started but wasn last seen 2020-03-17 modified 2014-05-19 plugin id 74048 published 2014-05-19 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/74048 title Fedora 20 : dovecot-2.2.13-1.fc20 (2014-6338) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory 2014-6338. # include("compat.inc"); if (description) { script_id(74048); script_version("1.5"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12"); script_cve_id("CVE-2014-3430"); script_bugtraq_id(67306); script_xref(name:"FEDORA", value:"2014-6338"); script_name(english:"Fedora 20 : dovecot-2.2.13-1.fc20 (2014-6338)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: " - Fixed a DoS attack against imap/pop3-login processes. If SSL/TLS handshake was started but wasn't finished, the login process attempted to eventually forcibly disconnect the client, but failed to do it correctly. This could have left the connections hanging arond for a long time. (Affected Dovecot v1.1+) - mdbox: Added mdbox_purge_preserve_alt setting to keep the file within alt storage during purge. - fts: Added support for parsing attachments via Apache Tika. Enable with: plugin { fts_tika = http://tikahost:9998/tika/ } - virtual plugin: Delay opening backend mailboxes until it's necessary. This requires mailbox_list_index=yes to work. (Currently IMAP IDLE command still causes all backend mailboxes to be opened.) - mail_never_cache_fields=* means now to disable all caching. This may be a useful optimization as doveadm/dsync parameter for some admin tasks which shouldn't really update the cache file. - IMAP: Return SPECIAL-USE flags always for LSUB command. - pop3 server was still crashing in v2.2.12 with some settings - maildir: Various fixes and improvements to handling compressed mails, especially when they have broken/missing S=sizes in filenames. - fts-lucene, fts-solr: Fixed crash on search when the index contained duplicate entries. - Many fixes and performance improvements to dsync and replication - director was somewhat broken when there were exactly two directors in the ring. It caused errors about 'weak users' getting stuck. - mail_attachment_dir: Attachments with the last base64-encoded line longer than the rest wasn't handled correctly. - IMAP: SEARCH/SORT PARTIAL was handled completely wrong in v2.2.11+ - acl: Global ACL file handling was broken when multiple entries matched the mailbox name. (Only the first entry was used.) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"http://tikahost:9998/tika/" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1096402" ); # https://lists.fedoraproject.org/pipermail/package-announce/2014-May/133439.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?b6038854" ); script_set_attribute( attribute:"solution", value:"Update the affected dovecot package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:dovecot"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:20"); script_set_attribute(attribute:"patch_publication_date", value:"2014/05/13"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/05/19"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! ereg(pattern:"^20([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 20.x", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC20", reference:"dovecot-2.2.13-1.fc20")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dovecot"); }NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2014-0790.NASL description From Red Hat Security Advisory 2014:0790 : Updated dovecot packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. 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. Dovecot is an IMAP server, written with security primarily in mind, for Linux and other UNIX-like systems. It also contains a small POP3 server. It supports mail in both the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. It was discovered that Dovecot did not properly discard connections trapped in the SSL/TLS handshake phase. A remote attacker could use this flaw to cause a denial of service on an IMAP/POP3 server by exhausting the pool of available connections and preventing further, legitimate connections to the IMAP/POP3 server to be made. (CVE-2014-3430) All dovecot users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the dovecot service will be restarted automatically. last seen 2020-06-01 modified 2020-06-02 plugin id 76232 published 2014-06-26 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/76232 title Oracle Linux 6 / 7 : dovecot (ELSA-2014-0790) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Red Hat Security Advisory RHSA-2014:0790 and # Oracle Linux Security Advisory ELSA-2014-0790 respectively. # include("compat.inc"); if (description) { script_id(76232); script_version("1.7"); script_cvs_date("Date: 2019/09/30 10:58:19"); script_cve_id("CVE-2014-3430"); script_bugtraq_id(67306); script_xref(name:"RHSA", value:"2014:0790"); script_name(english:"Oracle Linux 6 / 7 : dovecot (ELSA-2014-0790)"); script_summary(english:"Checks rpm output for the updated packages"); script_set_attribute( attribute:"synopsis", value:"The remote Oracle Linux host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "From Red Hat Security Advisory 2014:0790 : Updated dovecot packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. 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. Dovecot is an IMAP server, written with security primarily in mind, for Linux and other UNIX-like systems. It also contains a small POP3 server. It supports mail in both the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. It was discovered that Dovecot did not properly discard connections trapped in the SSL/TLS handshake phase. A remote attacker could use this flaw to cause a denial of service on an IMAP/POP3 server by exhausting the pool of available connections and preventing further, legitimate connections to the IMAP/POP3 server to be made. (CVE-2014-3430) All dovecot users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the dovecot service will be restarted automatically." ); script_set_attribute( attribute:"see_also", value:"https://oss.oracle.com/pipermail/el-errata/2014-July/004283.html" ); script_set_attribute( attribute:"see_also", value:"https://oss.oracle.com/pipermail/el-errata/2014-June/004215.html" ); script_set_attribute( attribute:"solution", value:"Update the affected dovecot packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dovecot"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dovecot-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dovecot-mysql"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dovecot-pgsql"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dovecot-pigeonhole"); script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6"); script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:7"); script_set_attribute(attribute:"vuln_publication_date", value:"2014/05/14"); script_set_attribute(attribute:"patch_publication_date", value:"2014/07/23"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/26"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Oracle Linux Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux"); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux"); os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux"); os_ver = os_ver[1]; if (! preg(pattern:"^(6|7)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 6 / 7", "Oracle Linux " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu); flag = 0; if (rpm_check(release:"EL6", reference:"dovecot-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"EL6", reference:"dovecot-devel-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"EL6", reference:"dovecot-mysql-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"EL6", reference:"dovecot-pgsql-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"EL6", reference:"dovecot-pigeonhole-2.0.9-7.el6_5.1")) flag++; if (rpm_check(release:"EL7", cpu:"x86_64", reference:"dovecot-2.2.10-4.el7_0.1")) flag++; if (rpm_check(release:"EL7", cpu:"x86_64", reference:"dovecot-mysql-2.2.10-4.el7_0.1")) flag++; if (rpm_check(release:"EL7", cpu:"x86_64", reference:"dovecot-pgsql-2.2.10-4.el7_0.1")) flag++; if (rpm_check(release:"EL7", cpu:"x86_64", reference:"dovecot-pigeonhole-2.2.10-4.el7_0.1")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dovecot / dovecot-devel / dovecot-mysql / dovecot-pgsql / etc"); }NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201412-03.NASL description The remote host is affected by the vulnerability described in GLSA-201412-03 (Dovecot: Denial of Service) Dovecot does not properly close connections, allowing a resource exhaustion for incomplete SSL/TLS handshakes. Impact : A remote attacker could possibly cause a Denial of Service condition. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 79813 published 2014-12-09 reporter This script is Copyright (C) 2014-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/79813 title GLSA-201412-03 : Dovecot: Denial of Service NASL family Debian Local Security Checks NASL id DEBIAN_DSA-2954.NASL description It was discovered that the Dovecot email server is vulnerable to a denial of service attack against imap/pop3-login processes due to incorrect handling of the closure of inactive SSL/TLS connections. last seen 2020-03-17 modified 2014-06-10 plugin id 74381 published 2014-06-10 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/74381 title Debian DSA-2954-1 : dovecot - security update NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2014-0790.NASL description Updated dovecot packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. 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. Dovecot is an IMAP server, written with security primarily in mind, for Linux and other UNIX-like systems. It also contains a small POP3 server. It supports mail in both the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. It was discovered that Dovecot did not properly discard connections trapped in the SSL/TLS handshake phase. A remote attacker could use this flaw to cause a denial of service on an IMAP/POP3 server by exhausting the pool of available connections and preventing further, legitimate connections to the IMAP/POP3 server to be made. (CVE-2014-3430) All dovecot users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the dovecot service will be restarted automatically. last seen 2020-06-01 modified 2020-06-02 plugin id 76218 published 2014-06-26 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/76218 title CentOS 6 : dovecot (CESA-2014:0790) NASL family Fedora Local Security Checks NASL id FEDORA_2014-6331.NASL description - Fixed a DoS attack against imap/pop3-login processes. If SSL/TLS handshake was started but wasn last seen 2020-03-17 modified 2014-06-18 plugin id 76092 published 2014-06-18 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/76092 title Fedora 19 : dovecot-2.2.13-1.fc19 (2014-6331) NASL family Scientific Linux Local Security Checks NASL id SL_20140625_DOVECOT_ON_SL6_X.NASL description It was discovered that Dovecot did not properly discard connections trapped in the SSL/TLS handshake phase. A remote attacker could use this flaw to cause a denial of service on an IMAP/POP3 server by exhausting the pool of available connections and preventing further, legitimate connections to the IMAP/POP3 server to be made. (CVE-2014-3430) After installing the updated packages, the dovecot service will be restarted automatically. last seen 2020-03-18 modified 2014-06-26 plugin id 76245 published 2014-06-26 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/76245 title Scientific Linux Security Update : dovecot on SL6.x i386/srpm/x86_64 (20140625) NASL family Mandriva Local Security Checks NASL id MANDRIVA_MDVSA-2014-099.NASL description A vulnerability has been discovered and corrected in dovecot : Dovecot 1.1 before 2.2.13 and dovecot-ee before 2.1.7.7 and 2.2.x before 2.2.12.12 does not properly close old connections, which allows remote attackers to cause a denial of service (resource consumption) via an incomplete SSL/TLS handshake for an IMAP/POP3 connection (CVE-2014-3430). The updated packages have been patched to correct this issue. last seen 2020-06-01 modified 2020-06-02 plugin id 74077 published 2014-05-19 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/74077 title Mandriva Linux Security Advisory : dovecot (MDVSA-2014:099) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2213-1.NASL description It was discovered that Dovecot incorrectly handled closing inactive SSL/TLS connections. A remote attacker could use this issue to cause Dovecot to stop responding to new connections, resulting in a denial of service. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 74034 published 2014-05-16 reporter Ubuntu Security Notice (C) 2014-2019 Canonical, Inc. / NASL script (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/74034 title Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.10 / 14.04 LTS : dovecot vulnerability (USN-2213-1) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2014-386.NASL description Dovecot 1.1 before 2.2.13 and dovecot-ee before 2.1.7.7 and 2.2.x before 2.2.12.12 does not properly close old connections, which allows remote attackers to cause a denial of service (resource consumption) via an incomplete SSL/TLS handshake for an IMAP/POP3 connection. last seen 2020-06-01 modified 2020-06-02 plugin id 78329 published 2014-10-12 reporter This script is Copyright (C) 2014-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/78329 title Amazon Linux AMI : dovecot (ALAS-2014-386) NASL family Mandriva Local Security Checks NASL id MANDRIVA_MDVSA-2015-113.NASL description Updated dovecot packages fix security vulnerability. Dovecot before 2.2.13 is vulnerable to a DoS attack against imap/pop3-login processes. If SSL/TLS handshake was started but wasn last seen 2020-06-01 modified 2020-06-02 plugin id 82366 published 2015-03-30 reporter This script is Copyright (C) 2015-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82366 title Mandriva Linux Security Advisory : dovecot (MDVSA-2015:113)
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References
- http://advisories.mageia.org/MGASA-2014-0223.html
- http://dovecot.org/pipermail/dovecot-news/2014-May/000273.html
- http://linux.oracle.com/errata/ELSA-2014-0790.html
- http://permalink.gmane.org/gmane.mail.imap.dovecot/77499
- http://rhn.redhat.com/errata/RHSA-2014-0790.html
- http://secunia.com/advisories/59051
- http://secunia.com/advisories/59537
- http://secunia.com/advisories/59552
- http://www.debian.org/security/2014/dsa-2954
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:113
- http://www.openwall.com/lists/oss-security/2014/05/09/4
- http://www.openwall.com/lists/oss-security/2014/05/09/8
- http://www.securityfocus.com/bid/67306
- http://www.ubuntu.com/usn/USN-2213-1