## Summary

There is a vulnerability in the Google protobuf-java library used by IBM WebSphere Application Server Liberty with the grpc-1.0 or grpcClient-1.0 feature enabled. This has been addressed.

## Vulnerability Details

** CVEID: **[CVE-2022-3171]()
** DESCRIPTION: **protobuf-java core and lite are vulnerable to a denial of service, caused by a flaw in the parsing procedure for binary and text format data. By sending non-repeated embedded messages with repeated or unknown fields, a remote authenticated attacker could exploit this vulnerability to cause long garbage collection pauses.
CVSS Base score: 5.7
CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/238394]() for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

** CVEID: **[CVE-2022-3509]()
** DESCRIPTION: **protobuf-java core and lite are vulnerable to a denial of service, caused by a flaw in the parsing procedure for textformat data. By sending non-repeated embedded messages with repeated or unknown fields, a remote authenticated attacker could exploit this vulnerability to cause long garbage collection pauses.
CVSS Base score: 5.7
CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/239915]() for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

## Affected Products and Versions

Affected Product(s)| Version(s)
—|—
IBM WebSphere Application Server Liberty| 21.0.0.2 – 22.0.0.12

## Remediation/Fixes

IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the APAR PH50342. To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to [How to determine if Liberty is using a specific feature]( “How to determine if Liberty is using a specific feature” ).

**For IBM WebSphere Application Server Liberty 21.0.0.2 – 22.0.0.12 using the grpc-1.0 or grpcClient-1.0 feature(s): **
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix [PH50342]( “PH50342” )
–OR–
· Apply Liberty Fix Pack 22.0.0.13 or later (targeted availability 4Q2022).

Additional interim fixes may be available and linked off the interim fix download page.

## Workarounds and Mitigations

None

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