QID 355811

Date Published: 2023-08-14

QID 355811: Amazon Linux Security Advisory for nghttp2 : ALAS2023-2023-278

Envoy is a cloud-native high-performance edge/middle/service proxy.
Envoy's http/2 codec may leak a header map and bookkeeping structures upon receiving `rst_stream` immediately followed by the `goaway` frames from an upstream server.
In nghttp2, cleanup of pending requests due to receipt of the `goaway` frame skips de-allocation of the bookkeeping structure and pending compressed header.
The error return [code path] is taken if connection is already marked for not sending more requests due to `goaway` frame.
The clean-up code is right after the return statement, causing memory leak.
Denial of service through memory exhaustion.
This vulnerability was patched in versions(s) 1.26.3, 1.25.8, 1.24.9, 1.23.11. (
( CVE-2023-35945)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2023-2023-278 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 355811

    CVE-2023-35945 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2023-2023-278 amazon linux 2023 URL Logo alas.aws.amazon.com/AL2023/ALAS-2023-278.html
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