CVE-2021-22570

Description

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.

How to fix CVE-2021-22570

To remediate CVE-2021-22570, upgrade the affected package to a fixed version below.

• —upgrade to 3.12.4-1+deb11u1 or later
• —upgrade to 0.0.0-20210218195015-ae50d9b99025 or later
• —upgrade to 3.15.0 or later
• —upgrade to 3.15.0 or later
• —upgrade to 3.15.0 or later
• —upgrade to 3.15.0 or later
• —upgrade to 3.15.0 or later

Is CVE-2021-22570 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (7)

• from 0, < 3.12.4-1+deb11u1
• from 0, < 0.0.0-20210218195015-ae50d9b99025
• from 0, < 3.15.0
• from 0, < 3.15.0
• from 0, < 3.15.0
• from 0, < 3.15.0
• from 0, < 3.15.0

CVSS scores

References (18)

• ADVISORYgithub.com/advisories/GHSA-77rm-9x9h-xj3g
• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-22570
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-22570
• PATCHgithub.com/protocolbuffers/protobuf
• WEB