CVE-2020-9490

Advisory lineage Upstream: 0 Downstream: 17
Modified
Published: 07 Aug 2020, 15:24
Last modified:04 Aug 2024, 10:26

Vulnerability Summary

Overall Risk (default)
medium
45/100
CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
76.28% CRITICAL
76% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

07 Aug 2020, 15:24
Published
Vulnerability first disclosed
04 Aug 2024, 10:26
Last Modified
Vulnerability information updated

Description

Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 76.28%• Percentile: 99%

Techniques & Countermeasures

  • CWE-444•Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

    The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

Affected Systems

  • Unknown•HTTP Server

    ≥ 2.4.20, < 2.4.46

  • canonical•ubuntu_linux

    16.04 | 18.04 | 20.04

  • debian•debian_linux

    10.0

  • fedoraproject•fedora

    31 | 32

  • opensuse•leap

    15.1 | 15.2

  • oracle•communications_element_manager

    ≥ 8.2.0, ≤ 8.2.2

  • oracle•communications_session_report_manager

    ≥ 8.2.0, ≤ 8.2.2

  • oracle•communications_session_route_manager

    ≥ 8.2.0, ≤ 8.2.2

  • oracle•enterprise_manager_ops_center

    12.4.0.0

  • oracle•hyperion_infrastructure_technology

    11.1.2.4

  • oracle•instantis_enterprisetrack

    17.1 | 17.2 | 17.3

  • oracle•zfs_storage_appliance_kit

    8.8

  • redhat•enterprise_linux

    8.0

  • redhat•enterprise_linux_eus

    8.1 | 8.2 | 8.4 | 8.6

  • redhat•enterprise_linux_for_ibm_z_systems

    8.0

  • redhat•enterprise_linux_for_ibm_z_systems_eus

    8.1 | 8.2 | 8.4 | 8.6

  • redhat•enterprise_linux_for_power_little_endian

    8.0

  • redhat•enterprise_linux_for_power_little_endian_eus

    8.1 | 8.2 | 8.4 | 8.6

  • redhat•enterprise_linux_server_aus

    8.2 | 8.4 | 8.6

  • redhat•enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions

    8.1 | 8.2 | 8.4 | 8.6

  • redhat•enterprise_linux_server_tus

    8.2 | 8.4 | 8.6

  • redhat•enterprise_linux_server_update_services_for_sap_solutions

    8.1 | 8.2 | 8.4 | 8.6

  • redhat•openstack

    16.1

  • redhat•openstack_for_ibm_power

    16.1

  • redhat•software_collections

    1.0

References (29)