Is CVE-2021-22570 in the CISA KEV catalog?

No. CVE-2021-22570 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-22570?

CVE-2021-22570 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2021-22570?

CVE-2021-22570 has an EPSS score of 2.66% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-22570?

Upgrade protobuf on debian 11 to 3.12.4-1+deb11u1 or later. Fixes are available for 41 affected products.

CVE & CISA-KEV Catalog

CVE-2021-22570

MEDIUMEPSS 84th pctl

6.5

CVSS v3

NVD

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.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

protobufDebian

Fixed in:3.12.4-1+deb11u1CVE-2021-22570

Fixed in:3.21.9-3CVE-2021-22570

protobufRocky

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobufRed Hat / RHEL

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-compilerRocky

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-compilerRed Hat / RHEL

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-compiler-debuginfoRed Hat / RHEL

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-compiler-debuginfoRocky

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-debuginfoRed Hat / RHEL

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-debuginfoRocky

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-debugsourceRed Hat / RHEL

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-debugsourceRocky

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-develRed Hat / RHEL

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-develRocky

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-liteRocky

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-liteRed Hat / RHEL

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-lite-debuginfoRed Hat / RHEL

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-lite-debuginfoRocky

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-lite-develRed Hat / RHEL

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

protobuf-lite-develRocky

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

python3-protobufRocky

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

python3-protobufRed Hat / RHEL

Fixed in:0:3.5.0-15.el8_6RHSA-2024:3433

libprotobuf-javaUbuntu

Fixed in:3.12.4-1ubuntu7.22.04.1USN-5945-1

Fixed in:3.12.4-1ubuntu7.22.10.1USN-5945-1

libprotobuf-lite10Ubuntu

Fixed in:3.0.0-9.1ubuntu1.1USN-5945-1

libprotobuf-lite17Ubuntu

Fixed in:3.6.1.3-2ubuntu5.2USN-5945-1

libprotobuf-lite23Ubuntu

Fixed in:3.12.4-1ubuntu7.22.04.1USN-5945-1

Fixed in:3.12.4-1ubuntu7.22.10.1USN-5945-1

libprotobuf-lite8Ubuntu

Fixed in:2.5.0-9ubuntu1+esm1USN-5945-1

libprotobuf-lite9v5Ubuntu

Fixed in:2.6.1-1.3ubuntu0.1~esm1USN-5490-1

libprotobuf10Ubuntu

Fixed in:3.0.0-9.1ubuntu1.1USN-5945-1

libprotobuf23Ubuntu

Fixed in:3.12.4-1ubuntu7.22.04.1USN-5945-1

Fixed in:3.12.4-1ubuntu7.22.10.1USN-5945-1

libprotobuf8Ubuntu

Fixed in:2.5.0-9ubuntu1+esm1USN-5945-1

libprotobuf9v5Ubuntu

Fixed in:2.6.1-1.3ubuntu0.1~esm1USN-5490-1

libprotoc-devUbuntu

Fixed in:3.6.1.3-2ubuntu5.2USN-5945-1

libprotoc10Ubuntu

Fixed in:3.0.0-9.1ubuntu1.1USN-5945-1

libprotoc17Ubuntu

Fixed in:3.6.1.3-2ubuntu5.2USN-5945-1

libprotoc23Ubuntu

Fixed in:3.12.4-1ubuntu7.22.04.1USN-5945-1

Fixed in:3.12.4-1ubuntu7.22.10.1USN-5945-1

libprotoc8Ubuntu

Fixed in:2.5.0-9ubuntu1+esm1USN-5945-1

libprotoc9v5Ubuntu

Fixed in:2.6.1-1.3ubuntu0.1~esm1USN-5490-1

protobufUbuntu

Fixed in:2.5.0-9ubuntu1+esm1USN-5945-1

Fixed in:2.6.1-1.3ubuntu0.1~esm1USN-5490-1

Fixed in:3.0.0-9.1ubuntu1.1USN-5945-1

Fixed in:3.6.1.3-2ubuntu5.2USN-5945-1

Fixed in:3.12.4-1ubuntu7.22.04.1USN-5945-1

Fixed in:3.12.4-1ubuntu7.22.10.1USN-5945-1

protobuf-compilerUbuntu

Fixed in:2.5.0-9ubuntu1+esm1USN-5945-1

Fixed in:2.6.1-1.3ubuntu0.1~esm1USN-5490-1

Fixed in:3.0.0-9.1ubuntu1.1USN-5945-1

Fixed in:3.6.1.3-2ubuntu5.2USN-5945-1

Fixed in:3.12.4-1ubuntu7.22.04.1USN-5945-1

Fixed in:3.12.4-1ubuntu7.22.10.1USN-5945-1

python-protobufUbuntu

Fixed in:3.0.0-9.1ubuntu1.1USN-5945-1

Fixed in:3.6.1.3-2ubuntu5.2USN-5945-1

python3-protobufUbuntu

Fixed in:3.0.0-9.1ubuntu1.1USN-5945-1

Fixed in:3.6.1.3-2ubuntu5.2USN-5945-1

Fixed in:3.12.4-1ubuntu7.22.04.1USN-5945-1

Fixed in:3.12.4-1ubuntu7.22.10.1USN-5945-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.66%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Third-Party Advisory3

Other references8

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.