CVEvulnerability

CVE-2014-3511

4.3 MEDIUM Published 2014-08-13 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2014-08-13
Last modified
2026-06-17
Assigner
[email protected]
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N

Description

The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 1.0.1 before 1.0.1i allows man-in-the-middle attackers to force the use of TLS 1.0 by triggering ClientHello message fragmentation in communication between a client and server that both support later TLS versions, related to a "protocol downgrade" issue.

Affected configurations

• openssl openssl 1.0.0 • openssl openssl 1.0.0a • openssl openssl 1.0.0b • openssl openssl 1.0.0c • openssl openssl 1.0.0d • openssl openssl 1.0.0e • openssl openssl 1.0.0f • openssl openssl 1.0.0g • openssl openssl 1.0.0h • openssl openssl 1.0.0i • openssl openssl 1.0.0j • openssl openssl 1.0.0k • openssl openssl 1.0.0l • openssl openssl 1.0.0m • openssl openssl 1.0.1 • openssl openssl 1.0.1a • openssl openssl 1.0.1b • openssl openssl 1.0.1c • openssl openssl 1.0.1d • openssl openssl 1.0.1e • openssl openssl 1.0.1f • openssl openssl 1.0.1g • openssl openssl 1.0.1h

References