Amazon Linux 2 Security Advisory: ALASDOCKER-2024-039
Advisory Release Date: 2024-05-23 23:02 Pacific
Advisory Updated Date: 2024-05-30 13:00 Pacific
An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection. (CVE-2023-45288)
Affected Packages:
amazon-ecr-credential-helper
Note:
This advisory is applicable to Amazon Linux 2 - Docker Extra. Visit this page to learn more about Amazon Linux 2 (AL2) Extras and this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update amazon-ecr-credential-helper to update your system.
aarch64:
amazon-ecr-credential-helper-0.7.1-4.amzn2.aarch64
amazon-ecr-credential-helper-debuginfo-0.7.1-4.amzn2.aarch64
src:
amazon-ecr-credential-helper-0.7.1-4.amzn2.src
x86_64:
amazon-ecr-credential-helper-0.7.1-4.amzn2.x86_64
amazon-ecr-credential-helper-debuginfo-0.7.1-4.amzn2.x86_64