CVE-2018-17206 — An issue was discovered in Open vSwitch (OvS) 2

An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6. The decode_bundle function inside lib/ofp-actions.c is affected by a buffer over-read issue during BUNDLE action decoding.

01What is this vulnerability?

An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6. The decode_bundle function inside lib/ofp-actions.c is affected by a buffer over-read issue during BUNDLE action decoding.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-09-19T16:00:00.000Z
• Last modified: 2024-08-05T10:47:04.065Z

09References

• access.redhat.com — https://access.redhat.com/errata/RHSA-2019:0053
• usn.ubuntu.com — https://usn.ubuntu.com/3873-1/
• access.redhat.com — https://access.redhat.com/errata/RHSA-2018:3500
• github.com — https://github.com/openvswitch/ovs/commit/9237a63c47bd314b807cda0bd2216264e82edb…
• access.redhat.com — https://access.redhat.com/errata/RHSA-2019:0081
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html