Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2023-44487: 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-2023-39325: 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-2023-39323: Line directives ("//line") can be used to bypass the restrictions on "//go:cgo_" directives, allowing blocked linker and compiler flags to be passed during compilation. This can result in unexpected execution of arbitrary code when running "go build". The line directive requires the absolute path of the file in which the directive lives, which makes exploiting this issue significantly more complex.
Fixed packages 7
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | golang | 0:1.20.10-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-bin | 0:1.20.10-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-docs | 0:1.20.10-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-misc | 0:1.20.10-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-shared | 0:1.20.10-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-src | 0:1.20.10-1.amzn2023.0.1 |
| Amazon Linux · 2023 | golang-tests | 0:1.20.10-1.amzn2023.0.1 |
Vulnerabilities 3
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High 7.5
HTTP/2 Stream Cancellation Attack
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.
KEV Oct 10, 2023 -
High 8.1
Arbitrary code execution during build via line directives in cmd/go
Line directives ("//line") can be used to bypass the restrictions on "//go:cgo_" directives, allowing blocked linker and compiler flags to be passed during compilation. This can result in unexpected execution of arbitrary code when running "go build". The lin…
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High 7.5CVE-2023-39325 Public exploit
HTTP/2 rapid reset can cause excessive work in net/http
A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress requ…