Security Bulletin: IBM Event Streams is affected by a remote code execution vulnerability (CVE-2023-26136).

Summary

A Remote Code Execution (RCE) vulnerability in Salesforce tough-cookie could allow a remote attacker to execute arbitrary code on the system, caused by a prototype pollution flaw due to improper handling of Cookies when using CookieJar in rejectPublicSuffixes=false mode.

Vulnerability Details

CVEID:CVE-2023-26136
**DESCRIPTION:**Salesforce tough-cookie could allow a remote attacker to execute arbitrary code on the system, caused by a prototype pollution flaw due to improper handling of Cookies when using CookieJar in rejectPublicSuffixes=false mode. By adding or modifying properties of Object.prototype using a proto or constructor payload, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/259555 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)

Affected Products and Versions

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now by upgrading

IBM Event Streams (Continuous Delivery)

• Upgrade to IBM Event Streams 11.2.2 by following the upgrading and migrating documentation.

Workarounds and Mitigations

None