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Improper Input Validation The advisory has been revoked - it doesn't affect any version of package openvswitch-controller  (opens in a new tab)

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EPSS
2.53% (85th percentile)

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  • Snyk IDSNYK-CENTOS7-OPENVSWITCHCONTROLLER-2267317
  • published1 Nov 2021
  • disclosed25 Sept 2018
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Introduced: 25 Sep 2018

CVE-2018-17205  (opens in a new tab)
CWE-20  (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-controller package and not the openvswitch-controller package as distributed by Centos.

An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting ofproto_rule_insert__ in ofproto/ofproto.c. During bundle commit, flows that are added in a bundle are applied to ofproto in order. If a flow cannot be added (e.g., the flow action is a go-to for a group id that does not exist), OvS tries to revert back all previous flows that were successfully applied from the same bundle. This is possible since OvS maintains list of old flows that were replaced by flows from the bundle. While reinserting old flows, OvS has an assertion failure due to a check on rule state != RULE_INITIALIZED. This would work for new flows, but for an old flow the rule state is RULE_REMOVED. The assertion failure causes an OvS crash.