7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
56.4%
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 inย https://github.com/grpc/grpc/pull/33005 https://github.com/grpc/grpc/pull/33005
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | grpc | <ย 1.51.1-3 | grpc_1.51.1-3_all.deb |
Debian | 11 | all | grpc | <ย 1.30.2-3 | grpc_1.30.2-3_all.deb |
Debian | 999 | all | grpc | <ย 1.51.1-4.1 | grpc_1.51.1-4.1_all.deb |
Debian | 13 | all | grpc | <ย 1.51.1-4.1 | grpc_1.51.1-4.1_all.deb |
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
56.4%