Overview
- Description
- 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
- Source
- cve-coordination@google.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 7.5
- Impact score
- 3.6
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Severity
- HIGH
Weaknesses
- nvd@nist.gov
- NVD-CWE-Other
- cve-coordination@google.com
- CWE-440
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:grpc:grpc:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1FD89F7C-C259-4213-A259-70C505491F50",
"versionEndExcluding": "1.55.0",
"versionStartIncluding": "1.53.0"
}
],
"operator": "OR"
}
]
}
]