High severity · published Jan 11, 2021
CVE-2021-3121
An issue was discovered in GoGo Protobuf before 1.3.2
8.6
CVSS
3.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.4% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Consul · Hashicorp
before 1.8.15; before 1.8.15; 1.9.0 before 1.9.9; 1.9.0 before 1.9.9; 1.10.0 before 1.10.2; 1.10.0 before 1.10.2 · source: NVD
PR
Protobuf · Golang
before 1.3.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3121
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3121
Third Party Advisory
https://discuss.hashicorp.com/t/hcsec-2021-23-consul-exposed-to-denial-of-service-in-gogo-protobuf-dependency/29025
Patch
https://github.com/gogo/protobuf/commit/b03c65ea87cdc3521ede29f62fe3ce239267c1bc
Patch
https://github.com/gogo/protobuf/compare/v1.3.1...v1.3.2
lists.apache.org
https://lists.apache.org/thread.html/r68032132c0399c29d6cdc7bd44918535da54060a10a12b1591328bff%40%3Cnotifications.skywalking.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r88d69555cb74a129a7bf84838073b61259b4a3830190e05a3b87994e%40%3Ccommits.pulsar.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/rc1e9ff22c5641d73701ba56362fb867d40ed287cca000b131dcf4a44%40%3Ccommits.pulsar.apache.org%3E