CVE-2016-10027: fedoraproject fedora Race Condition

Vulnerability summary

CVE-2016-10027 is a medium (CVSS 5.9) Race Condition vulnerability in fedoraproject fedora. EPSS estimates a 1.51% chance of exploitation in the next 30 days, higher than 74.1% of scored vulnerabilities.

Timeline

1. 12-01-2017
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

Race condition in the XMPP library in Smack before 4.1.9, when the SecurityMode.required TLS setting has been set, allows man-in-the-middle attackers to bypass TLS protections and trigger use of cleartext for client authentication by stripping the "starttls" feature from a server response.

• CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.