CVE-2023-32731

CVE-2023-32731 involves a vulnerability in the gRPC HTTP/2 HPACK handling. When the HPACK header size exceeded error is raised, the stack skips parsing the remainder of the HPACK frame, causing HPACK table mutations to be ignored and desynchronizing the HPACK tables between sender and receiver. T...

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...

CVE-2023-32732 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 HTTP2 proxies. We recommend upgrading beyo...

CVE-2023-32732 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 HTTP2 proxies. We recommend upgrading beyo...

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 beyo...

CVE-2023-32732

CVE-2023-32732: gRPC vulnerability where a base64 encoding error for -bin suffixed headers can cause the gRPC server to terminate a connection with an HTTP/2 proxy, potentially affecting availability (LOW). Root cause described as a header encoding mishap that proxies may still allow, with remedi...

CVE-2023-32732 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 HTTP2 proxies. We recommend upgrading beyo...

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 beyo...

CVE-2023-1428 Denial-of-Service in gRPC

There exists an vulnerability causing an abort to be called in gRPC. The following headers cause gRPC's C++ implementation to abort when called via http2: te: x x != trailers :scheme: x x != http, https grpclbclientstats: x x == anything On top of sending one of those headers, a later header must...

CVE-2023-1428 Denial-of-Service in gRPC

There exists an vulnerability causing an abort to be called in gRPC. The following headers cause gRPC's C++ implementation to abort when called via http2: te: x x != trailers :scheme: x x != http, https grpclbclientstats: x x == anything On top of sending one of those headers, a later header must...

CVE-2023-1428 Denial-of-Service in gRPC

There exists an vulnerability causing an abort to be called in gRPC. The following headers cause gRPC's C++ implementation to abort when called via http2: te: x x != trailers :scheme: x x != http, https grpclbclientstats: x x == anything On top of sending one of those headers, a later header must...

CVE-2023-1428

CVE-2023-1428: gRPC for C++ is affected by a denial of service due to specific HTTP/2 header handling. When certain headers (for example te: x; :scheme: x; grpclb_client_stats: x) are sent and the total header size exceeds 8 KB, gRPC’s C++ implementation can abort(). The vulnerability is a NETWOR...

CVE-2023-1428

There exists an vulnerability causing an abort to be called in gRPC. The following headers cause gRPC's C++ implementation to abort when called via http2: te: x x != trailers :scheme: x x != http, https grpclbclientstats: x x == anything On top of sending one of those headers, a later header must...

CVE-2023-1428

There exists an vulnerability causing an abort to be called in gRPC. The following headers cause gRPC's C++ implementation to abort when called via http2: te: x x != trailers :scheme: x x != http, https grpclbclientstats: x x == anything On top of sending one of those headers, a later header must...

GRPC security vulnerabilities

gRPC is a modern, open-source, high-performance Remote Procedure Call RPC framework from gRPC Open Source. A security vulnerability exists in gRPC, which stems from the ability to call abort functions via http2...

CVE-2023-32731: Expected Behavior Violation

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...

CVE-2023-32732: Expected Behavior Violation

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 beyo...

Incomplete Internal State Distinction in GRPCWebToHTTP2ServerCodec

Affected gRPC Swift servers are vulnerable to precondition failures when parsing certain gRPC Web requests. This may lead to a denial of service...

Denial of Service via reachable assertion

A grpc-swift server is vulnerable to a denial of service attack via a reachable assertion. This was due to incorrect logic when handling GOAWAY frames. The attack is low-effort: it takes very little resources to construct and send the required sequence of frames. The impact on availability is hig...

Uncontrolled Resource Consumption in LengthPrefixedMessageReader

Affected gRPC Swift clients and servers are vulnerable to uncontrolled resource consumption attacks. Excessive memory may be allocated when parsing messages. This can lead to a denial of service...