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CVE-2018-5518

UnknownEPSS 0.43%

Last modified

CVE-2018-5518 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
0.43%

34.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
F5Big-Ip Local Traffic Manager>= 12.0.0, <= 12.1.3
F5Big-Ip Local Traffic Manager>= 13.0.0, <= 13.1.0
F5Big-Ip Application Acceleration Manager>= 12.0.0, <= 12.1.3
F5Big-Ip Application Acceleration Manager>= 13.0.0, <= 13.1.0
F5Big-Ip Advanced Firewall Manager>= 12.0.0, <= 12.1.3
F5Big-Ip Advanced Firewall Manager>= 13.0.0, <= 13.1.0
F5Big-Ip Analytics>= 12.0.0, <= 12.1.3
F5Big-Ip Analytics>= 13.0.0, <= 13.1.0
F5Big-Ip Access Policy Manager>= 12.0.0, <= 12.1.3
F5Big-Ip Access Policy Manager>= 13.0.0, <= 13.1.0
F5Big-Ip Application Security Manager>= 12.0.0, <= 12.1.3
F5Big-Ip Application Security Manager>= 13.0.0, <= 13.1.0
F5Big-Ip Edge Gateway>= 12.0.0, <= 12.1.3
F5Big-Ip Edge Gateway>= 13.0.0, <= 13.1.0
F5Big-Ip Global Traffic Manager>= 12.0.0, <= 12.1.3
F5Big-Ip Global Traffic Manager>= 13.0.0, <= 13.1.0
F5Big-Ip Link Controller>= 12.0.0, <= 12.1.3
F5Big-Ip Link Controller>= 13.0.0, <= 13.1.0
F5Big-Ip Policy Enforcement Manager>= 12.0.0, <= 12.1.3
F5Big-Ip Policy Enforcement Manager>= 13.0.0, <= 13.1.0
F5Big-Ip Webaccelerator>= 12.0.0, <= 12.1.3
F5Big-Ip Webaccelerator>= 13.0.0, <= 13.1.0
F5Big-Ip Websafe>= 12.0.0, <= 12.1.3
F5Big-Ip Websafe>= 13.0.0, <= 13.1.0
F5Big-Ip Domain Name System>= 12.0.0, <= 12.1.3
F5Big-Ip Domain Name System>= 13.0.0, <= 13.1.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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 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.
How severe is CVE-2018-5518?
Severity scoring for CVE-2018-5518 is pending analysis. The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.
How do I fix CVE-2018-5518?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST