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CVE-2023-39326

Public on 2023-12-06
Modified on 2024-01-23
Description

A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small.

Severity
Medium
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CVSS v3 Base Score
4.3
See breakdown
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core amazon-cloudwatch-agent 2024-01-19 01:51 ALAS2-2024-2424
Amazon Linux 2023 amazon-cloudwatch-agent 2024-01-19 01:31 ALAS2023-2024-498
Amazon Linux 2023 amazon-ecr-credential-helper 2024-05-23 21:49 ALAS2023-2024-631
Amazon Linux 2 - Docker Extra docker 2024-08-27 19:16 ALAS2DOCKER-2024-044
Amazon Linux 2 - Ecs Extra docker 2024-08-27 19:16 ALAS2ECS-2024-041
Amazon Linux 2 - Aws-nitro-enclaves-cli Extra docker 2024-08-27 19:16 ALAS2NITRO-ENCLAVES-2024-045
Amazon Linux 1 amazon-ssm-agent 2024-02-14 20:03 ALAS-2024-1920
Amazon Linux 2 - Core amazon-ssm-agent 2024-02-15 03:52 ALAS2-2024-2458
Amazon Linux 2023 amazon-ssm-agent 2024-02-15 02:52 ALAS2023-2024-526
Amazon Linux 2 - Core cni-plugins 2024-05-09 19:16 ALAS2-2024-2543
Amazon Linux 2023 cni-plugins 2024-05-09 17:16 ALAS2023-2024-618
Amazon Linux 2 - Docker Extra containerd 2024-02-01 20:10 ALAS2DOCKER-2024-037
Amazon Linux 2 - Ecs Extra containerd 2024-03-04 06:33 ALAS2ECS-2024-035
Amazon Linux 2 - Aws-nitro-enclaves-cli Extra containerd 2024-02-01 20:10 ALAS2NITRO-ENCLAVES-2024-037
Amazon Linux 2023 containerd 2024-01-19 01:31 ALAS2023-2024-499
Amazon Linux 2 - Core cri-tools 2024-02-01 19:57 ALAS2-2024-2446
Amazon Linux 2023 docker 2024-02-29 10:29 ALAS2023-2024-542
Amazon Linux 2023 ecs-init 2024-05-09 17:16 ALAS2023-2024-619
Amazon Linux 1 golang 2024-01-03 22:37 ALAS-2024-1903
Amazon Linux 2 - Core golang 2024-01-03 21:04 ALAS2-2024-2388
Amazon Linux 2023 golang 2024-01-03 23:20 ALAS2023-2024-477
Amazon Linux 2 - Core golist 2024-05-23 22:04 ALAS2-2024-2556
Amazon Linux 2 - Core nerdctl 2024-08-01 03:01 ALAS2-2024-2618
Amazon Linux 2023 nerdctl 2024-02-15 02:52 ALAS2023-2024-529
Amazon Linux 2023 oci-add-hooks 2024-05-23 21:49 ALAS2023-2024-632
Amazon Linux 2023 runc 2024-01-25 19:13 ALAS2023-2024-501

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD CVSSv3 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N