CVE-2023-32731 | Date: (C)2023-06-10 (M)2024-04-29 |
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
CVSS Score and Metrics +CVSS Score and Metrics -CVSS V3 Severity: | CVSS V2 Severity: |
CVSS Score : 7.5 | CVSS Score : |
Exploit Score: 3.9 | Exploit Score: |
Impact Score: 3.6 | Impact Score: |
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CVSS V3 Metrics: | CVSS V2 Metrics: |
Attack Vector: NETWORK | Access Vector: |
Attack Complexity: LOW | Access Complexity: |
Privileges Required: NONE | Authentication: |
User Interaction: NONE | Confidentiality: |
Scope: UNCHANGED | Integrity: |
Confidentiality: HIGH | Availability: |
Integrity: NONE | |
Availability: NONE | |
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