Resource Exhaustion Affecting rh-sso7-keycloak-server package, versions <0:4.8.15-1.Final_redhat_00001.1.el7sso


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
20.63% (97th percentile)

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  • Snyk IDSNYK-RHEL7-RHSSO7KEYCLOAKSERVER-4479838
  • published26 Jul 2021
  • disclosed13 Aug 2019

Introduced: 13 Aug 2019

CVE-2019-9515  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade RHEL:7 rh-sso7-keycloak-server to version 0:4.8.15-1.Final_redhat_00001.1.el7sso or higher.
This issue was patched in RHSA-2019:4041.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rh-sso7-keycloak-server package and not the rh-sso7-keycloak-server package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

References

CVSS Scores

version 3.1