High severity · published Mar 13, 2019
CVE-2019-6596
In BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.1.1, 12.1.0-12.1.3.6, 11.6.1-11.6.3.2, or 11.5.1-11.5.8, when processing fragmented ClientHello messages in a DTLS session TMM may corrupt…
7.5
CVSS
1.4%
EPSS
No
On KEV
Description
In BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.1.1, 12.1.0-12.1.3.6, 11.6.1-11.6.3.2, or 11.5.1-11.5.8, when processing fragmented ClientHello messages in a DTLS session TMM may corrupt memory eventually leading to a crash. Only systems offering DTLS connections via APM are impacted.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BA
BIG-IP (APM) · F5 Networks, Inc.
14.0.0-14.0.0.2, 13.0.0-13.1.1.1, 12.1.0-12.1.3.6, 11.6.1-11.6.3.2, 11.5.1-11.5.8 · source: vendor
BA
Big-ip Access Policy Manager · F5
11.5.1 through 11.5.8; 11.6.1 through 11.6.3; 12.1.0 through 12.1.3; 13.0.0 through 13.1.1; 14.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-6596
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-6596
Third Party Advisory
http://www.securityfocus.com/bid/107403
Vendor Advisory
https://support.f5.com/csp/article/K97241515
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