<p>Upgrade <code>Oracle:8</code> <code>libnghttp2</code> to version 0:1.33.0-1.el8_0.1 or higher.<br>This issue was patched in <code>ELSA-2019-2692</code>.</p>

Allocation of Resources Without Limits or Throttling Affecting libnghttp2 package, versions <0:1.33.0-1.el8_0.1

Threat Intelligence

9.62% (95^th percentile)

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Snyk ID SNYK-ORACLE8-LIBNGHTTP2-2540755
published 10 Apr 2022
disclosed 13 Aug 2019

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Introduced: 13 Aug 2019

CVE-2019-9511 Open this link in a new tab CWE-770 Open this link in a new tab

How to fix?

Upgrade Oracle:8 libnghttp2 to version 0:1.33.0-1.el8_0.1 or higher.
This issue was patched in ELSA-2019-2692.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libnghttp2 package and not the libnghttp2 package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Network
Attack Complexity (AC)

Low
Privileges Required (PR)

None
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

None
Integrity (I)

None
Availability (A)

High