In Open vSwitch (OvS) 2.7.0, while parsing an OFPT_QUEUE_GET_CONFIG_REPLY type OFP 1.0 message, there is a buffer over-read that is caused by an unsigned integer underflow in the function `ofputil_pull_queue_get_config_reply10` in `lib/ofp-util.c`.

The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - openvswitch: Buffer over-read while parsing the group mod OpenFlow message (CVE-2017-9265)

  - In Open vSwitch (OvS) 2.7.0, while parsing an OFPT_QUEUE_GET_CONFIG_REPLY type OFP 1.0 message, there is a     buffer over-read that is caused by an unsigned integer underflow in the function     `ofputil_pull_queue_get_config_reply10` in `lib/ofp-util.c`. (CVE-2017-9214)

  - In Open vSwitch (OvS) 2.7.0, while parsing an OpenFlow role status message, there is a call to the abort()     function for undefined role status reasons in the function `ofp_print_role_status_message` in `lib/ofp-     print.c` that may be leveraged toward a remote DoS attack by a malicious switch. (CVE-2017-9263)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:2692 advisory.

    Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote     per-flow control of traffic.

    Security Fix(es):

    * An unsigned integer wrap around that led to a buffer over-read was found when parsing     OFPT_QUEUE_GET_CONFIG_REPLY messages in Open vSwitch (OvS). An attacker could use this issue to cause a     remote denial of service attack. (CVE-2017-9214)

    * While parsing an OpenFlow role status message Open vSwitch (OvS), a call to the abort() function for     undefined role status reasons in the function 'ofp_print_role_status_message' in 'lib/ofp-print.c' could     be misused for a remote denial of service attack by a malicious switch. (CVE-2017-9263)

    * A buffer over-read issue was found in Open vSwitch (OvS) which emerged while parsing the GroupMod     OpenFlow messages sent from the controller. The issue could enable an attacker to cause a denial of     service type of attack. (CVE-2017-9265)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Several issues have been found in openvswitch, a production quality, multilayer, software-based, Ethernet virtual switch.

CVE-2020-35498

Denial of service attacks, in which crafted network packets could cause the packet lookup to ignore network header fields from layers 3 and 4. The crafted network packet is an ordinary IPv4 or IPv6 packet with Ethernet padding length above 255 bytes. This causes the packet sanity check to abort parsing header fields after layer 2.

CVE-2020-27827

Denial of service attacks using crafted LLDP packets.

CVE-2018-17206

Buffer over-read issue during BUNDLE action decoding.

CVE-2018-17204

Assertion failure due to not validating information (group type and command) in OF1.5 decoder.

CVE-2017-9214

Buffer over-read that is caused by an unsigned integer underflow.

CVE-2015-8011

Buffer overflow in the lldp_decode function in daemon/protocols/lldp.c in lldpd before 0.8.0 allows remote attackers to cause a denial of service (daemon crash) and possibly execute arbitrary code via vectors involving large management addresses and TLV boundaries.

For Debian 9 stretch, these problems have been fixed in version 2.6.10-0+deb9u1. This version is a new upstream point release.

We recommend that you upgrade your openvswitch packages.

For the detailed security status of openvswitch please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/openvswitch

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for openvswitch fixes the following issues :

  - CVE-2017-9263: While parsing an OpenFlow role status     message, there is a call to the abort() functio for     undefined role status reasons in the function     `ofp_print_role_status_message` in `lib/ofp-print.c`     that may be leveraged toward a remote DoS attack by a     malicious switch. (bsc#1041470)

  - CVE-2017-9265: Buffer over-read while parsing the group     mod OpenFlow message sent from the controller in     `lib/ofp-util.c` in the function     `ofputil_pull_ofp15_group_mod`.(bsc#1041447)

  - CVE-2017-9214: While parsing an     OFPT_QUEUE_GET_CONFIG_REPLY type OFP 1.0 message, there     is a buffer over-read that is caused by an unsigned     integer underflow in the function     `ofputil_pull_queue_get_config_reply10` in     `lib/ofp-util.c`. (bsc#1040543)

  - CVE-2017-14970: In lib/ofp-util.c, there are multiple     memory leaks while parsing malformed OpenFlow group mod     messages.(bsc#1061310)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3450-1 advisory.

    Bhargava Shastry discovered that Open vSwitch incorrectly handled certain OFP messages. A remote attacker     could possibly use this issue to cause Open vSwitch to crash, resulting in a denial of service.
    (CVE-2017-9214)

    It was discovered that Open vSwitch incorrectly handled certain OpenFlow role messages. A remote attacker     could possibly use this issue to cause Open vSwitch to crash, resulting in a denial of service.
    (CVE-2017-9263)

    It was discovered that Open vSwitch incorrectly handled certain malformed packets. A remote attacker could     possibly use this issue to cause Open vSwitch to crash, resulting in a denial of service. This issue only     affected Ubuntu 17.04. (CVE-2017-9264)

    It was discovered that Open vSwitch incorrectly handled group mod OpenFlow messages. A remote attacker     could possibly use this issue to cause Open vSwitch to crash, resulting in a denial of service.
    (CVE-2017-9265)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update for openvswitch is now available for Fast Datapath for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic.

The following packages have been upgraded to a later upstream version:
openvswitch (2.7.2). (BZ#1472854)

Security Fix(es) :

* An unsigned int wrap around leading to a buffer over-read was found when parsing OFPT_QUEUE_GET_CONFIG_REPLY messages in Open vSwitch (OvS). An attacker could use this flaw to cause a remote DoS.
(CVE-2017-9214)

* In Open vSwitch (OvS), while parsing an OpenFlow role status message there is a call to the abort() function for undefined role status reasons in the function `ofp_print_role_status_message` in `lib/ofp-print.c` that may be leveraged toward a remote DoS attack by a malicious switch. (CVE-2017-9263)

* A buffer over-read was found in the Open vSwitch (OvS) firewall implementation. This flaw can be triggered by parsing a specially crafted TCP, UDP, or IPv6 packet. A remote attack could use this flaw to cause a Denial of Service (DoS). (CVE-2017-9264)

* A buffer over-read flaw was found in Open vSwitch (OvS) while parsing the group mod OpenFlow messages sent from the controller. An attacker could use this flaw to cause a Denial of Service (DoS).
(CVE-2017-9265)

Security fix for CVE-2017-9264

----

Security fix for CVE-2017-9214

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
199806	RHEL 6 : openvswitch (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
193837	RHEL 7 : openvswitch (RHSA-2017:2692)	Nessus	Red Hat Local Security Checks	critical
146677	Debian DLA-2571-1 : openvswitch security update	Nessus	Debian Local Security Checks	critical
106555	SUSE SLES12 Security Update : openvswitch (SUSE-SU-2018:0311-1)	Nessus	SuSE Local Security Checks	critical
103813	Ubuntu 16.04 LTS : Open vSwitch vulnerabilities (USN-3450-1)	Nessus	Ubuntu Local Security Checks	critical
102187	RHEL 7 : openvswitch (RHSA-2017:2418)	Nessus	Red Hat Local Security Checks	critical
101648	Fedora 26 : openvswitch (2017-671e8c760f)	Nessus	Fedora Local Security Checks	critical

Detections

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CVE-2017-9214

critical

Tenable Plugins

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