Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2023-4785: Lack of error handling in the TCP server in Google's gRPC starting version 1.23 on posix-compatible platforms (ex. Linux) allows an attacker to cause a denial of service by initiating a significant number of connections with the server. Note that gRPC C++ Python, and Ruby are affected, but gRPC Java, and Go are NOT affected. CVE-2023-32732: gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for `-bin` suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in https://github.com/grpc/grpc/pull/32309 https://www.google.com/url CVE-2023-32731: When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, say, between a proxy and a backend, this could lead to requests from the proxy being interpreted as containing headers from different proxy clients - leading to an information leak that can be used for privilege escalation or data exfiltration. We recommend upgrading beyond the commit contained in https://github.com/grpc/grpc/pull/33005 https://github.com/grpc/grpc/pull/33005
Fixed packages 10
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | grpc | 0:1.56.2-10.amzn2023 |
| Amazon Linux · 2023 | grpc-cpp | 0:1.56.2-10.amzn2023 |
| Amazon Linux · 2023 | grpc-cpp-debuginfo | 0:1.56.2-10.amzn2023 |
| Amazon Linux · 2023 | grpc-data | 0:1.56.2-10.amzn2023 |
| Amazon Linux · 2023 | grpc-debuginfo | 0:1.56.2-10.amzn2023 |
| Amazon Linux · 2023 | grpc-debugsource | 0:1.56.2-10.amzn2023 |
| Amazon Linux · 2023 | grpc-devel | 0:1.56.2-10.amzn2023 |
| Amazon Linux · 2023 | grpc-doc | 0:1.56.2-10.amzn2023 |
| Amazon Linux · 2023 | grpc-plugins | 0:1.56.2-10.amzn2023 |
| Amazon Linux · 2023 | grpc-plugins-debuginfo | 0:1.56.2-10.amzn2023 |
Vulnerabilities 3
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High 7.5
Denial of Service in gRPC Core
Lack of error handling in the TCP server in Google's gRPC starting version 1.23 on posix-compatible platforms (ex. Linux) allows an attacker to cause a denial of service by initiating a significant number of connections with the server. Note that gRPC C++ Pyt…
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High 7.4
Information leak in gRPC
When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, sa…
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Medium 5.3
Denial-of-Service in gRPC
gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for `-bin` suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HT…