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Tracker / CVE-2019-1559

CVE-2019-1559

Medium 5.9

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 with invalid padding compared to if a 0 byte record is received with an invalid MAC. If the application then behaves differently based on that in a way that is detectable to the remote peer, then this amounts to a padding oracle that could be used to decrypt data. In order for this to be exploitable "non-stitched" ciphersuites must be in use. Stitched ciphersuites are optimised implementations of certain commonly used ciphersuites. Also the application must call SSL_shutdown() twice even if a protocol error has occurred (applications should not do this but some do anyway). Fixed in OpenSSL 1.0.2r (Affected 1.0.2-1.0.2q).

Affected products and versions

canonical ubuntu_linux
debian debian_linux
f5 big-ip_access_policy_manager · 12.1.0 → 12.1.5
f5 big-ip_access_policy_manager · 13.0.0 → 13.1.3
f5 big-ip_access_policy_manager · 14.0.0 → 14.1.2
f5 big-ip_access_policy_manager · 15.0.0 → 15.1.0
f5 big-ip_advanced_firewall_manager · 12.1.0 → 12.1.5
f5 big-ip_advanced_firewall_manager · 13.0.0 → 13.1.3
f5 big-ip_advanced_firewall_manager · 14.0.0 → 14.1.2
f5 big-ip_advanced_firewall_manager · 15.0.0 → 15.1.0
f5 big-ip_analytics · 12.1.0 → 12.1.5
f5 big-ip_analytics · 13.0.0 → 13.1.3
f5 big-ip_analytics · 14.0.0 → 14.1.2
f5 big-ip_analytics · 15.0.0 → 15.1.0
f5 big-ip_application_acceleration_manager · 12.1.0 → 12.1.5
f5 big-ip_application_acceleration_manager · 13.0.0 → 13.1.3
f5 big-ip_application_acceleration_manager · 14.0.0 → 14.1.2
f5 big-ip_application_acceleration_manager · 15.0.0 → 15.1.0
f5 big-ip_application_security_manager · 12.1.0 → 12.1.5
f5 big-ip_application_security_manager · 13.0.0 → 13.1.3
f5 big-ip_application_security_manager · 14.0.0 → 14.1.2
f5 big-ip_application_security_manager · 15.0.0 → 15.1.0
f5 big-ip_domain_name_system · 12.1.0 → 12.1.5
f5 big-ip_domain_name_system · 13.0.0 → 13.1.3
f5 big-ip_domain_name_system · 14.0.0 → 14.1.2
f5 big-ip_domain_name_system · 15.0.0 → 15.1.0
f5 big-ip_edge_gateway · 12.1.0 → 12.1.5
f5 big-ip_edge_gateway · 13.0.0 → 13.1.3
f5 big-ip_edge_gateway · 14.0.0 → 14.1.2
f5 big-ip_edge_gateway · 15.0.0 → 15.1.0
f5 big-ip_fraud_protection_service · 12.1.0 → 12.1.5
f5 big-ip_fraud_protection_service · 13.0.0 → 13.1.3
f5 big-ip_fraud_protection_service · 14.0.0 → 14.1.2
f5 big-ip_fraud_protection_service · 15.0.0 → 15.1.0
f5 big-ip_global_traffic_manager · 12.1.0 → 12.1.5
f5 big-ip_global_traffic_manager · 13.0.0 → 13.1.3
f5 big-ip_global_traffic_manager · 14.0.0 → 14.1.2
f5 big-ip_global_traffic_manager · 15.0.0 → 15.1.0
f5 big-ip_link_controller · 12.1.0 → 12.1.5
f5 big-ip_link_controller · 13.0.0 → 13.1.3
f5 big-ip_link_controller · 14.0.0 → 14.1.2
f5 big-ip_link_controller · 15.0.0 → 15.1.0
f5 big-ip_local_traffic_manager · 12.1.0 → 12.1.5
f5 big-ip_local_traffic_manager · 13.0.0 → 13.1.3
f5 big-ip_local_traffic_manager · 14.0.0 → 14.1.2
f5 big-ip_local_traffic_manager · 15.0.0 → 15.1.0
f5 big-ip_policy_enforcement_manager · 12.1.0 → 12.1.5
f5 big-ip_policy_enforcement_manager · 13.0.0 → 13.1.3
f5 big-ip_policy_enforcement_manager · 14.0.0 → 14.1.2
f5 big-ip_policy_enforcement_manager · 15.0.0 → 15.1.0
f5 big-ip_webaccelerator · 12.1.0 → 12.1.5
f5 big-ip_webaccelerator · 13.0.0 → 13.1.3
f5 big-ip_webaccelerator · 14.0.0 → 14.1.2
f5 big-ip_webaccelerator · 15.0.0 → 15.1.0
f5 big-iq_centralized_management · 6.0.0 → 6.1.0
f5 big-iq_centralized_management · 7.0.0 → 7.1.0
f5 traffix_signaling_delivery_controller
f5 traffix_signaling_delivery_controller · 5.0.0 → 5.1.0
fedoraproject fedora
mcafee agent · 5.6.0 → 5.6.4

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References