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CVE Record

CVE-2018-5518: On F5 BIG-IP 13.0.0-13.1.0.5 or 12.0.0-12.1.3.3, malicious root users with access to a VCMP guest can cause...

On F5 BIG-IP 13.0.0-13.1.0.5 or 12.0.0-12.1.3.3, malicious root users with access to a VCMP guest can cause a disruption of service on adjacent VCMP guests running on the same host. Exploiting this vulnerability causes the vCMPd process on the adjacent VCMP guest to restart and produce a core file. This issue is only exploitable on a VCMP guest which is operating in "host-only" or "bridged" mode. VCMP guests which are "isolated" are not impacted by this issue and do not provide mechanism to exploit the vulnerability. Guests which are deployed in "Appliance Mode" may be impacted however the exploit is not possible from an Appliance Mode guest. To exploit this vulnerability root access on a guest system deployed as "host-only" or "bridged" mode is required.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This issue lets a malicious administrator who already has root access inside certain F5 BIG-IP vCMP guests disrupt neighboring vCMP guests on the same host. It is a service availability risk, not a remote unauthenticated takeover based on the provided sources. Exposure is limited to organizations running affected F5 BIG-IP versions with vCMP guests in host-only or bridged mode. Isolated guests are not impacted. Appliance Mode guests may be impacted, but the source says exploitation is not possible from an Appliance Mode guest. Treat this as a targeted availability risk in shared F5 virtualization environments. It is most urgent where vCMP hosts support critical services or separate administrative domains, because one privileged guest user could disrupt adjacent guests. Mitigation focus: Inventory affected BIG-IP versions and vCMP guest modes.; Move qualifying guests to isolated mode where operationally feasible.; Restrict and monitor root access on all vCMP guests..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
F5 Networks, Inc.BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe)13.0.0-13.1.0.5, 12.0.0-12.1.3.3Listed
Weakness

CWE details

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