Security Bulletin: The Community Edition of IBM ILOG CPLEX Optimization Studio is affected by a vulnerability in libcurl (CVE-2021-22925)

Security Bulletin

Summary

The Community Edition of IBM ILOG CPLEX Optimization Studio on Windows platform only has addressed the following vulnerability: libcurl is vulnerable to a remote attack.

Vulnerability Details

CVEID: CVE-2021-22925
DESCRIPTION: cURL libcurl could allow a remote attacker to obtain sensitive information, caused by a flaw in the option parser for sending NEW_ENV variables. By sniffing the network traffic, an attacker could exploit this vulnerability to obtain TELNET stack contents, and use this information to launch further attacks against the affected system.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/206051 for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM ILOG CPLEX Optimization Studio (COS)	20.1.0.1
IBM ILOG CPLEX Optimization Studio (COS)	20.1
IBM ILOG CPLEX Optimization Studio (COS)	12.10
IBM ILOG CPLEX Optimization Studio (COS)	12.9
IBM ILOG CPLEX Optimization Studio (COS)	12.8

Remediation/Fixes

Please replace the initial DLL version with the fixed version 7.79.1 available on Fix Central.
MD checksum: 343C94A75FD43F7F04CDE8A079C58E67

How to upgrade:

locate the CPLEX binaries directory: `%CPLEX_STUDIO_DIR%/cplex/bin/x64_win64` where `%CPLEX_STUDIO_DIR%` is the location where your CPLEX is installed.
download the new `libcurl.dll`
copy `libcurl.dll` to your CPLEX binaries directory (you might need administrative rights).

Workarounds and Mitigations

There is no workaround or mitigation

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

04 Oct 2021: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Tips

Security Bulletin: The Community Edition of IBM ILOG CPLEX Optimization Studio is affected by a vulnerability in libcurl (CVE-2021-22925)