Title: CVE-2021-31535 remote attackers warning in StarWind products

Note: StarWind will continue to update this vulnerability as new information becomes available.

Vulnerability ID: SW-20220503-0002

Version: 1.0

Date: 2022-05-03

Status: Final

CVEs: CVE-2021-31535

Summary

LookupCol.c in X.Org X through X11R7.7 and libX11 before 1.7.1 might allow remote attackers to execute arbitrary code. The libX11 XLookupColor request (intended for server-side color lookup) contains a flaw allowing a client to send color-name requests with a name longer than the maximum size allowed by the protocol (and also longer than the maximum packet size for normal-sized packets). The user-controlled data exceeding the maximum size is then interpreted by the server as additional X protocol requests and executed, e.g., to disable X server authorization completely.

Impact 

If the victim encounters malicious terminal control sequences for color codes, then the attacker may be able to take full control of the running graphical session.

Vulnerability Scoring

CVE CVSS 2.0 Score CVSS 3.x Score
CVE-2021-31535 7.5 (HIGH) 9.8(CRITICAL)

Vector

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

References

Resource Hyperlink
NVD https://nvd.nist.gov/vuln/detail/CVE-2021-31535

 

Affected Products: 

StarWind Command Center build 6003 v2

Not affected products:

StarWind SAN&NAS build 1381

StarWind SAN&NAS build 1064

StarWind Command Center build 5871

StarWind Command Center build 5856

StarWind Command Center build 5650

StarWind Command Center build 4992

StarWind VSAN for Hyper-V (all versions)

StarWind VTL component (all versions for Windows Server)

StarWind V2V (all versions)

StarWind Tape Redirector component (all versions)

StarWind Deduplication Analyzer (all versions)

StarWind rPerf (all versions)

StarWind iSCSI Accelerator (all versions)

StarWind NVMe-oF Initiator (all versions)

Software Versions and Fixes

Fixed in StarWind Command Center v2 build 7024

Workaround

Update StarWind Command Center to the build 7024 or higher.

Obtaining Software Fixes 

Software updates will be available in StarWind release notes – https://www.starwindsoftware.com/release-notes-build. To update the software, perform the steps described at the following link  – https://knowledgebase.starwindsoftware.com/guidance/upgrading-from-any-starwind-version-to-any-starwind-version/ or contact support to perform an update. You can submit a support request using the following link https://www.starwindsoftware.com/support-form or contact Support directly via email support@starwind.com or via phone +1 617 829 4499.

Status of Notice

Final

StarWind will continue to update information regarding this vulnerability as new details become available.

This vulnerability article should be considered as the single source of current, up-to-date, authorized and accurate information posted by StarWind Software.

Revision History 

Revision # Date Comments
1.0 2022-05-03 Initial Public Release