Amazon Linux 2 Security Advisory: ALASNITRO-ENCLAVES-2024-043
Advisory Release Date: 2024-08-14 19:05 Pacific
Advisory Updated Date: 2024-08-21 12:20 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:
oci-add-hooks
Note:
This advisory is applicable to Amazon Linux 2 - Nitro-enclaves 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 oci-add-hooks to update your system.
aarch64:
oci-add-hooks-0-0.2.20200504git325a340.amzn2.aarch64
oci-add-hooks-debuginfo-0-0.2.20200504git325a340.amzn2.aarch64
src:
oci-add-hooks-0-0.2.20200504git325a340.amzn2.src
x86_64:
oci-add-hooks-0-0.2.20200504git325a340.amzn2.x86_64
oci-add-hooks-debuginfo-0-0.2.20200504git325a340.amzn2.x86_64