CVE-2021-3121
HIGH
8.6
CVSS Score
Published: January 11, 2021 at 05:57 AM UTC
Updated: June 17, 2026 at 04:04 AM UTC
2 products affected across 2 vendorsConsulProtobuf
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Severity
HIGH8.6
Exploit prediction
EPSS 3%
Description
An issue was discovered in GoGo Protobuf before 1.3.2. plugin/unmarshal/unmarshal.go lacks certain index validation, aka the "skippy peanut butter" issue.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 1.3.2
Affected range stops below 1.3.2, so it looks safe — our inference, not a vendor statement
v < 1.8.151.10.0 ≤ v < 1.10.21.9.0 ≤ v < 1.9.9
Affected range stops below 1.10.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.8.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.9.9, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (7)
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://discuss.hashicorp.com/t/hcsec-2021-23-consul-exposed-to-denial-of-service-in-gogo-protobuf-dependency/29025x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/gogo/protobuf/commit/b03c65ea87cdc3521ede29f62fe3ce239267c1bcx_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/gogo/protobuf/compare/v1.3.1...v1.3.2Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/r88d69555cb74a129a7bf84838073b61259b4a3830190e05a3b87994e%40%3Ccommits.pulsar.apache.org%3EMailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/rc1e9ff22c5641d73701ba56362fb867d40ed287cca000b131dcf4a44%40%3Ccommits.pulsar.apache.org%3Ex_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210219-0006/CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-129
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