Vulnerability in F5 Big-ip_access_policy_manager

CVE-2019-1559

If an application encounters a fatal protocol error and then calls SSL_shutdown() twice (once to send a close_notify, and once to receive one) then OpenSSL can respond differently to the calling application if a 0 byte record is received w…

EPSS: 0.171 (96.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2019-1559?
CVE-2019-1559 is a medium-severity vulnerability in F5 Big-ip_access_policy_manager, classified under Observable Discrepancy. CVSS score: 5.9/10. Published 2019-02-27.
How severe is CVE-2019-1559?
Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2019-1559 known to be exploited?
6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.