CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation
none
Automatable
no
Technical Impact
partial
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
[
{
"cpes": [
"cpe:2.3:a:grpc:grpc:*:*:*:*:*:*:*:*"
],
"vendor": "grpc",
"product": "grpc",
"versions": [
{
"status": "affected",
"version": "1.53",
"versionType": "custom",
"lessThanOrEqual": "1.54"
}
],
"defaultStatus": "unknown"
}
]
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation
none
Automatable
no
Technical Impact
partial