MEDIUM
CVE-2018-17206
CWE-125Published: September 19, 2018· Updated: Jun 17, 2026
4.9
CVSS v3.1
Official Description
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.
Technical Analysis
CVE-2018-17206 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.9.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
openvswitch1 product(s)
openvswitch
Red Hat1 product(s)
openstack
Source: NVD CPE · 6 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
ADVISORYhttps://usn.ubuntu.com/3873-1/
ADVISORYhttps://usn.ubuntu.com/3873-1/
All References (12)
→
https://access.redhat.com/errata/RHSA-2018:3500Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2019:0053Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2019:0081Third Party Advisory
→
https://github.com/openvswitch/ovs/commit/9237a63c47bd314b807cda0bd2216264e82edbe8Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/02/msg00032.htmlMailing List · Third Party Advisory
→
https://usn.ubuntu.com/3873-1/Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2018:3500Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2019:0053Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2019:0081Third Party Advisory
→
https://github.com/openvswitch/ovs/commit/9237a63c47bd314b807cda0bd2216264e82edbe8Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/02/msg00032.htmlMailing List · Third Party Advisory
→
https://usn.ubuntu.com/3873-1/Third Party Advisory
Quick Facts
CVE IDCVE-2018-17206
CVSS Score4.9 / 10
SeverityMEDIUM
WeaknessCWE-125
CISA KEVNo
Affected4 vendor(s)
PublishedSep 19, 2018
Related CVEs (CWE-125)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-17206 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.