Improper Input Validation The advisory has been revoked - it doesn't affect any version of package openvswitch (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS7-OPENVSWITCH-2267116
- published1 Nov 2021
- disclosed25 Sept 2018
Introduced: 25 Sep 2018
CVE-2018-17204 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos:7.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openvswitch package and not the openvswitch package as distributed by Centos.
An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting parse_group_prop_ntr_selection_method in lib/ofp-util.c. When decoding a group mod, it validates the group type and command after the whole group mod has been decoded. The OF1.5 decoder, however, tries to use the type and command earlier, when it might still be invalid. This causes an assertion failure (via OVS_NOT_REACHED). ovs-vswitchd does not enable support for OpenFlow 1.5 by default.
References
- https://access.redhat.com/security/cve/CVE-2018-17204
- https://github.com/openvswitch/ovs/commit/4af6da3b275b764b1afe194df6499b33d2bf4cde
- https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html
- https://access.redhat.com/errata/RHSA-2018:3500
- https://access.redhat.com/errata/RHSA-2019:0053
- https://access.redhat.com/errata/RHSA-2019:0081
- https://usn.ubuntu.com/3873-1/