Medium severity · published Jul 3, 2019
CVE-2019-6637
On BIG-IP (ASM) 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, and 12.1.0-12.1.4, Application logic abuse of ASM REST endpoints can lead to instability of BIG-IP system
6.5
CVSS
1.4%
EPSS
No
On KEV
Description
On BIG-IP (ASM) 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, and 12.1.0-12.1.4, Application logic abuse of ASM REST endpoints can lead to instability of BIG-IP system. Exploitation of this issue causes excessive memory consumption which results in the Linux kernel triggering OOM killer on arbitrary processes. The attack requires an authenticated user with role of "Guest" or greater privilege. Note: "No Access" cannot login so technically it's a role but a user with this access role cannot perform the attack.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BA
Big-ip Application Security Manager · F5
12.1.0 before 12.1.4.1; 13.0.0 before 13.1.1.5; 14.0.0 before 14.0.0.5; 14.1.0 before 14.1.0.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-6637
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-6637
Third Party Advisory
http://www.securityfocus.com/bid/109091
Vendor Advisory
https://support.f5.com/csp/article/K29149494
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