ID CVE-2017-9264
Summary In lib/conntrack.c in the firewall implementation in Open vSwitch (OvS) 2.6.1, there is a buffer over-read while parsing malformed TCP, UDP, and IPv6 packets in the functions `extract_l3_ipv6`, `extract_l4_tcp`, and `extract_l4_udp` that can be triggered remotely.
References
Vulnerable Configurations
  • cpe:2.3:a:openvswitch:openvswitch:2.6.1
    cpe:2.3:a:openvswitch:openvswitch:2.6.1
CVSS
Base: 7.5
Impact:
Exploitability:
CWE CWE-119
CAPEC
  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
  • Overflow Binary Resource File
    An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the attacker access to the execution stack and execute arbitrary code in the target process. This attack pattern is a variant of standard buffer overflow attacks using an unexpected vector (binary files) to wrap its attack and open up a new attack vector. The attacker is required to either directly serve the binary content to the victim, or place it in a locale like a MP3 sharing application, for the victim to download. The attacker then is notified upon the download or otherwise locates the vulnerability opened up by the buffer overflow.
  • Buffer Overflow via Symbolic Links
    This type of attack leverages the use of symbolic links to cause buffer overflows. An attacker can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
  • Overflow Variables and Tags
    This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The attacker crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
  • Buffer Overflow via Parameter Expansion
    In this attack, the target software is given input that the attacker knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
  • Buffer Overflow in an API Call
    This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An attacker who has access to an API may try to embed malicious code in the API function call and exploit a buffer overflow vulnerability in the function's implementation. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
  • Buffer Overflow in Local Command-Line Utilities
    This attack targets command-line utilities available in a number of shells. An attacker can leverage a vulnerability found in a command-line utility to escalate privilege to root.
nessus via4
  • NASL family PhotonOS Local Security Checks
    NASL id PHOTONOS_PHSA-2017-0020_OPENVSWITCH.NASL
    description An update of the openvswitch package has been released.
    last seen 2019-02-08
    modified 2019-02-07
    plugin id 121699
    published 2019-02-07
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=121699
    title Photon OS 1.0: Openvswitch PHSA-2017-0020
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2017-671E8C760F.NASL
    description 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.
    last seen 2019-01-16
    modified 2018-02-01
    plugin id 101648
    published 2017-07-17
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=101648
    title Fedora 26 : openvswitch (2017-671e8c760f)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-3450-1.NASL
    description 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). 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 2019-01-16
    modified 2018-12-01
    plugin id 103813
    published 2017-10-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103813
    title Ubuntu 16.04 LTS / 17.04 : openvswitch vulnerabilities (USN-3450-1)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2017-2418.NASL
    description 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)
    last seen 2019-01-16
    modified 2018-11-10
    plugin id 102187
    published 2017-08-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=102187
    title RHEL 7 : openvswitch (RHSA-2017:2418)
  • NASL family PhotonOS Local Security Checks
    NASL id PHOTONOS_PHSA-2017-0020.NASL
    description An update of [openvswitch] packages for PhotonOS has been released.
    last seen 2019-02-08
    modified 2019-02-07
    plugin id 111869
    published 2018-08-17
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=111869
    title Photon OS 1.0: Openvswitch PHSA-2017-0020 (deprecated)
redhat via4
advisories
  • rhsa
    id RHSA-2017:2418
  • rhsa
    id RHSA-2017:2648
  • rhsa
    id RHSA-2017:2727
refmap via4
confirm https://mail.openvswitch.org/pipermail/ovs-dev/2017-March/329323.html
Last major update 29-05-2017 - 00:29
Published 29-05-2017 - 00:29
Last modified 04-01-2018 - 21:31
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