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amazonAmazonALAS2-2023-2312
HistoryOct 16, 2023 - 1:45 p.m.

Important: nghttp2

2023-10-1613:45:00
alas.aws.amazon.com
60

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.5 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.72 High

EPSS

Percentile

98.0%

JSON

Issue Overview:

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. (CVE-2023-44487)

Affected Packages:

nghttp2

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update nghttp2 to update your system.

New Packages:

aarch64:  
    nghttp2-1.41.0-1.amzn2.0.4.aarch64  
    libnghttp2-1.41.0-1.amzn2.0.4.aarch64  
    libnghttp2-devel-1.41.0-1.amzn2.0.4.aarch64  
    nghttp2-debuginfo-1.41.0-1.amzn2.0.4.aarch64  
  
i686:  
    nghttp2-1.41.0-1.amzn2.0.4.i686  
    libnghttp2-1.41.0-1.amzn2.0.4.i686  
    libnghttp2-devel-1.41.0-1.amzn2.0.4.i686  
    nghttp2-debuginfo-1.41.0-1.amzn2.0.4.i686  
  
src:  
    nghttp2-1.41.0-1.amzn2.0.4.src  
  
x86_64:  
    nghttp2-1.41.0-1.amzn2.0.4.x86_64  
    libnghttp2-1.41.0-1.amzn2.0.4.x86_64  
    libnghttp2-devel-1.41.0-1.amzn2.0.4.x86_64  
    nghttp2-debuginfo-1.41.0-1.amzn2.0.4.x86_64

Additional References

Red Hat: CVE-2023-44487

Mitre: CVE-2023-44487

OSVersionArchitecturePackageVersionFilename
Amazon Linux2aarch64nghttp2< 1.41.0-1.amzn2.0.4nghttp2-1.41.0-1.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64libnghttp2< 1.41.0-1.amzn2.0.4libnghttp2-1.41.0-1.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64libnghttp2-devel< 1.41.0-1.amzn2.0.4libnghttp2-devel-1.41.0-1.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64nghttp2-debuginfo< 1.41.0-1.amzn2.0.4nghttp2-debuginfo-1.41.0-1.amzn2.0.4.aarch64.rpm
Amazon Linux2i686nghttp2< 1.41.0-1.amzn2.0.4nghttp2-1.41.0-1.amzn2.0.4.i686.rpm
Amazon Linux2i686libnghttp2< 1.41.0-1.amzn2.0.4libnghttp2-1.41.0-1.amzn2.0.4.i686.rpm
Amazon Linux2i686libnghttp2-devel< 1.41.0-1.amzn2.0.4libnghttp2-devel-1.41.0-1.amzn2.0.4.i686.rpm
Amazon Linux2i686nghttp2-debuginfo< 1.41.0-1.amzn2.0.4nghttp2-debuginfo-1.41.0-1.amzn2.0.4.i686.rpm
Amazon Linux2x86_64nghttp2< 1.41.0-1.amzn2.0.4nghttp2-1.41.0-1.amzn2.0.4.x86_64.rpm
Amazon Linux2x86_64libnghttp2< 1.41.0-1.amzn2.0.4libnghttp2-1.41.0-1.amzn2.0.4.x86_64.rpm
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1-10 of 121

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7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.5 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.72 High

EPSS

Percentile

98.0%

JSON
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