Nullptr Dereference in Protobuf
CVE-2021-22570

6.5MEDIUM

Key Information:

Vendor

Google
Status
Protobuf
Vendor
CVE Published:
26 January 2022

What is CVE-2021-22570?

Nullptr dereference when a null char is present in a proto symbol. The symbol is parsed incorrectly, leading to an unchecked call into the proto file's name during generation of the resulting error message. Since the symbol is incorrectly parsed, the file is nullptr. We recommend upgrading to version 3.15.0 or greater.

Affected Version(s)

Protobuf < 3.15.0

References

https://github.com/protocolbuffers/protobuf/releases/tag/...
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2021-22570 : Nullptr Dereference in Protobuf