SB2017011346 - Race condition in Smack

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Main Vulnerability Database SB2017011346

SB2017011346 - Race condition in Smack

Published: January 13, 2017 Updated: August 14, 2025

Security Bulletin ID SB2017011346
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Race condition (CVE-ID: CVE-2016-10027)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to a race condition in the XMPP library in Smack, when the SecurityMode.required TLS setting has been set. A remote attacker can exploit the race to bypass TLS protections and trigger use of cleartext for client authentication by stripping the "starttls" feature from a server response.


Remediation

Install update from vendor's website.

References