Race condition in OpenSSL - CVE-2014-3509

 

Race condition in OpenSSL - CVE-2014-3509

Published: August 14, 2014 / Updated: August 10, 2020


Vulnerability identifier: #VU41411
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2014-3509
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: OpenSSL Software Foundation
Affected software:
OpenSSL

Detailed vulnerability description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Race condition in the ssl_parse_serverhello_tlsext function in t1_lib.c in OpenSSL 1.0.0 before 1.0.0n and 1.0.1 before 1.0.1i, when multithreading and session resumption are used, allows remote SSL servers to cause a denial of service (memory overwrite and client application crash) or possibly have unspecified other impact by sending Elliptic Curve (EC) Supported Point Formats Extension data.


How to mitigate CVE-2014-3509

Install update from vendor's website.

Sources