var-201607-0547
Vulnerability from variot
Buffer overflow in lib/flow.c in ovs-vswitchd in Open vSwitch 2.2.x and 2.3.x before 2.3.3 and 2.4.x before 2.4.1 allows remote attackers to execute arbitrary code via crafted MPLS packets, as demonstrated by a long string in an ovs-appctl command. Open vSwitch is prone to multiple remote buffer-overflow vulnerabilities because it fails to adequately bounds check user-supplied data before copying it into an insufficiently sized buffer. Successful exploits may allow attackers to execute arbitrary code or cause denial-of-service conditions. It supports large-scale network automation, standard management interfaces and protocols, etc. through programming extensions. The following versions are affected: OVS Version 2.2.x, Version 2.3.x, Version 2.4.x.
Background
Open vSwitch is a production quality multilayer virtual switch.
Workaround
There is no known workaround at this time.
Resolution
All Open vSwitch users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/openvswitch-2.5.0"
References
[ 1 ] CVE-2016-2074 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2074
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/201701-07
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2017 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
--FOwRaKoxFb5txc6jCpaFu8xVgvCjK1wAH--
. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
===================================================================== Red Hat Security Advisory
Synopsis: Important: openvswitch security update Advisory ID: RHSA-2016:0615-01 Product: Red Hat OpenShift Enterprise Advisory URL: https://access.redhat.com/errata/RHSA-2016:0615 Issue date: 2016-04-11 CVE Names: CVE-2016-2074 =====================================================================
- Summary:
Updated openvswitch packages that fix one security issue are now available for Red Hat OpenShift Enterprise 3.1.
Red Hat Product Security has rated this update as having Important 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.
- Relevant releases/architectures:
Red Hat OpenShift Enterprise 3.1 - noarch, x86_64
- Description:
OpenShift Enterprise by Red Hat is the company's cloud computing Platform-as-a-Service (PaaS) solution designed for on-premise or private cloud deployments.
A buffer overflow flaw was discovered in the OVS processing of MPLS labels. A remote attacker able to deliver a frame containing a malicious MPLS label that would be processed by OVS could trigger the flaw and use the resulting memory corruption to cause a denial of service (DoS) or, possibly, execute arbitrary code. (CVE-2016-2074)
Red Hat would like to thank the Open vSwitch Project for reporting these issues. Upstream acknowledges Kashyap Thimmaraju and Bhargava Shastry as the original reporters of CVE-2016-2074.
This update includes the following images:
openshift3/openvswitch:v3.1.1.6-9 aep3_beta/openvswitch:v3.1.1.6-9 openshift3/node:v3.1.1.6-16 aep3_beta/node:v3.1.1.6-16
All openvswitch users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.
- Solution:
Before applying this update, make sure all previously released errata relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258
- Bugs fixed (https://bugzilla.redhat.com/):
1318553 - CVE-2016-2074 openvswitch: MPLS buffer overflow vulnerability
- Package List:
Red Hat OpenShift Enterprise 3.1:
Source: openvswitch-2.4.0-2.el7_2.src.rpm
noarch: openvswitch-test-2.4.0-2.el7_2.noarch.rpm python-openvswitch-2.4.0-2.el7_2.noarch.rpm
x86_64: openvswitch-2.4.0-2.el7_2.x86_64.rpm openvswitch-debuginfo-2.4.0-2.el7_2.x86_64.rpm openvswitch-devel-2.4.0-2.el7_2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/
- References:
https://access.redhat.com/security/cve/CVE-2016-2074 https://access.redhat.com/security/updates/classification/#important
- Contact:
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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-- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce .
For the stable distribution (jessie), this problem has been fixed in version 2.3.0+git20140819-3+deb8u1.
For the unstable distribution (sid), this problem has been fixed in version 2.3.0+git20140819-4.
We recommend that you upgrade your openvswitch packages. Description:
Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic
Show details on source website{
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"data": "Buffer overflow in lib/flow.c in ovs-vswitchd in Open vSwitch 2.2.x and 2.3.x before 2.3.3 and 2.4.x before 2.4.1 allows remote attackers to execute arbitrary code via crafted MPLS packets, as demonstrated by a long string in an ovs-appctl command. Open vSwitch is prone to multiple remote buffer-overflow vulnerabilities because it fails to adequately bounds check user-supplied data before copying it into an insufficiently sized buffer. \nSuccessful exploits may allow attackers to execute arbitrary code or cause denial-of-service conditions. It supports large-scale network automation, standard management interfaces and protocols, etc. through programming extensions. The following versions are affected: OVS Version 2.2.x, Version 2.3.x, Version 2.4.x. \n\nBackground\n==========\n\nOpen vSwitch is a production quality multilayer virtual switch. \n\nWorkaround\n==========\n\nThere is no known workaround at this time. \n\nResolution\n==========\n\nAll Open vSwitch users should upgrade to the latest version:\n\n # emerge --sync\n # emerge --ask --oneshot --verbose \"\u003e=net-misc/openvswitch-2.5.0\"\n\nReferences\n==========\n\n[ 1 ] CVE-2016-2074\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2074\n\nAvailability\n============\n\nThis GLSA and any updates to it are available for viewing at\nthe Gentoo Security Website:\n\n https://security.gentoo.org/glsa/201701-07\n\nConcerns?\n=========\n\nSecurity is a primary focus of Gentoo Linux and ensuring the\nconfidentiality and security of our users\u0027 machines is of utmost\nimportance to us. Any security concerns should be addressed to\nsecurity@gentoo.org or alternatively, you may file a bug at\nhttps://bugs.gentoo.org. \n\nLicense\n=======\n\nCopyright 2017 Gentoo Foundation, Inc; referenced text\nbelongs to its owner(s). \n\nThe contents of this document are licensed under the\nCreative Commons - Attribution / Share Alike license. \n\nhttp://creativecommons.org/licenses/by-sa/2.5\n\n\n--FOwRaKoxFb5txc6jCpaFu8xVgvCjK1wAH--\n\n. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA1\n\n=====================================================================\n Red Hat Security Advisory\n\nSynopsis: Important: openvswitch security update\nAdvisory ID: RHSA-2016:0615-01\nProduct: Red Hat OpenShift Enterprise\nAdvisory URL: https://access.redhat.com/errata/RHSA-2016:0615\nIssue date: 2016-04-11\nCVE Names: CVE-2016-2074 \n=====================================================================\n\n1. Summary:\n\nUpdated openvswitch packages that fix one security issue are now available \nfor Red Hat OpenShift Enterprise 3.1. \n\nRed Hat Product Security has rated this update as having Important security\nimpact. A Common Vulnerability Scoring System (CVSS) base score, which\ngives a detailed severity rating, is available from the CVE link in the\nReferences section. \n\n2. Relevant releases/architectures:\n\nRed Hat OpenShift Enterprise 3.1 - noarch, x86_64\n\n3. Description:\n\nOpenShift Enterprise by Red Hat is the company\u0027s cloud computing\nPlatform-as-a-Service (PaaS) solution designed for on-premise or private\ncloud deployments. \n\nA buffer overflow flaw was discovered in the OVS processing of MPLS labels. \nA remote attacker able to deliver a frame containing a malicious MPLS label\nthat would be processed by OVS could trigger the flaw and use the resulting\nmemory corruption to cause a denial of service (DoS) or, possibly, execute \narbitrary code. (CVE-2016-2074)\n\nRed Hat would like to thank the Open vSwitch Project for reporting these \nissues. Upstream acknowledges Kashyap Thimmaraju and Bhargava Shastry as \nthe original reporters of CVE-2016-2074. \n\nThis update includes the following images:\n\nopenshift3/openvswitch:v3.1.1.6-9\naep3_beta/openvswitch:v3.1.1.6-9\nopenshift3/node:v3.1.1.6-16\naep3_beta/node:v3.1.1.6-16\n\nAll openvswitch users are advised to upgrade to this updated package, which\ncontains a backported patch to correct this issue. \n\n4. Solution:\n\nBefore applying this update, make sure all previously released errata\nrelevant to your system have been applied. \n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258\n\n5. Bugs fixed (https://bugzilla.redhat.com/):\n\n1318553 - CVE-2016-2074 openvswitch: MPLS buffer overflow vulnerability\n\n6. Package List:\n\nRed Hat OpenShift Enterprise 3.1:\n\nSource:\nopenvswitch-2.4.0-2.el7_2.src.rpm\n\nnoarch:\nopenvswitch-test-2.4.0-2.el7_2.noarch.rpm\npython-openvswitch-2.4.0-2.el7_2.noarch.rpm\n\nx86_64:\nopenvswitch-2.4.0-2.el7_2.x86_64.rpm\nopenvswitch-debuginfo-2.4.0-2.el7_2.x86_64.rpm\nopenvswitch-devel-2.4.0-2.el7_2.x86_64.rpm\n\nThese packages are GPG signed by Red Hat for security. Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7. References:\n\nhttps://access.redhat.com/security/cve/CVE-2016-2074\nhttps://access.redhat.com/security/updates/classification/#important\n\n8. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. More contact\ndetails at https://access.redhat.com/security/team/contact/\n\nCopyright 2016 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1\n\niD8DBQFXDKHJXlSAg2UNWIIRArVMAJ9kWC3bedooegoZ6ADWrLKD9xKzCQCfUQmK\n/IpUBYvFD22Fc2VwgoAoq2g=\n=EyZn\n-----END PGP SIGNATURE-----\n\n\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://www.redhat.com/mailman/listinfo/rhsa-announce\n. \n\nFor the stable distribution (jessie), this problem has been fixed in\nversion 2.3.0+git20140819-3+deb8u1. \n\nFor the unstable distribution (sid), this problem has been fixed in\nversion 2.3.0+git20140819-4. \n\nWe recommend that you upgrade your openvswitch packages. Description:\n\nOpen vSwitch provides standard network bridging functions and support for\nthe OpenFlow protocol for remote per-flow control of traffic",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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