Excessive Iteration Affecting olcne-api-server package, versions <0:1.3.2-2.el8


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.11% (44th percentile)

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  • Snyk IDSNYK-ORACLE8-OLCNEAPISERVER-2600477
  • published10 Apr 2022
  • disclosed24 Aug 2021

Introduced: 24 Aug 2021

CVE-2021-32778  (opens in a new tab)
CWE-834  (opens in a new tab)

How to fix?

Upgrade Oracle:8 olcne-api-server to version 0:1.3.2-2.el8 or higher.
This issue was patched in ELSA-2021-9546.

NVD Description

Note: Versions mentioned in the description apply only to the upstream olcne-api-server package and not the olcne-api-server package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions envoy’s procedure for resetting a HTTP/2 stream has O(N^2) complexity, leading to high CPU utilization when a large number of streams are reset. Deployments are susceptible to Denial of Service when Envoy is configured with high limit on H/2 concurrent streams. An attacker wishing to exploit this vulnerability would require a client opening and closing a large number of H/2 streams. Envoy versions 1.19.1, 1.18.4, 1.17.4, 1.16.5 contain fixes to reduce time complexity of resetting HTTP/2 streams. As a workaround users may limit the number of simultaneous HTTP/2 dreams for upstream and downstream peers to a low number, i.e. 100.

CVSS Scores

version 3.1