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CVE-2021-22569

Denial of Service of protobuf-java parsing procedure

MEDIUM
5.5
CVSS Score
Published: January 7, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 03:37 AM UTC
7 products affected across 2 vendorsCommunications Cloud Native Core PolicyCommunications Cloud Native Core Network Repository FunctionCommunications Cloud Native Core Console

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Severity
MEDIUM5.5
Exploit prediction
EPSS 2%
SSVC
PoC

Description

An issue in protobuf-java allowed the interleaving of com.google.protobuf.UnknownFieldSet fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Google Protobuf· Googlerubygems
95%
v < 3.19.2
Affected range stops below 3.19.2, so it looks safe — our inference, not a vendor statement
Protobuf Java· Google
95%
v < 3.16.1v < 3.18.2v < 3.19.23.18.0 ≤ v < 3.18.23.19.0 ≤ v < 3.19.2
Affected range stops below 3.16.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.18.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.19.2, so it looks safe — our inference, not a vendor statement
Protobuf Kotlin· Google
95%
v < 3.18.2v < 3.19.23.19.0 ≤ v < 3.19.2
Affected range stops below 3.18.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.19.2, so it looks safe — our inference, not a vendor statement
Communications Cloud Native Core Console· Oracle
95%
1.9.0
Communications Cloud Native Core Network Repository Function· Oracle
95%
1.15.01.15.1
Communications Cloud Native Core Policy· Oracle
95%
1.15.0
Spatial and Graph Mapviewer· Oracle
95%
19c21c

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (6)

Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/01/12/4
Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/01/12/7
ExploitIssue TrackingMailing ListVendor Advisory
Source: [email protected]
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39330
Vendor Advisory
Source: [email protected]
https://cloud.google.com/support/bulletins#gcp-2022-001
Mailing List
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2023/04/msg00019.html
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpuapr2022.html

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-696NVD-CWE-noinfo

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