Vulnerability in Openssl
CVE-2014-3511
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.
EPSS: 0.133 (96.0th percentile) — read the EPSS interpretation.
Affected products
- Openssl — versions 1.0.0, 1.0.0a, 1.0.0b
- N/a — versions n/a
Public proof-of-concept exploits
References
- secalert@redhat.com (vendor-advisory, x_refsource_SUSE)
- secalert@redhat.com (x_refsource_CONFIRM)
- secalert@redhat.com (x_refsource_SECUNIA, third-party-advisory)
- secalert@redhat.com (x_refsource_CONFIRM)
- secalert@redhat.com (x_refsource_SECUNIA, third-party-advisory)
- secalert@redhat.com (x_refsource_HP, vendor-advisory)
- secalert@redhat.com (x_refsource_SECUNIA, third-party-advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Vendor Advisory)
- secalert@redhat.com (x_refsource_SECUNIA, third-party-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
Frequently asked questions
- What is CVE-2014-3511?
- CVE-2014-3511 is a vulnerability in Openssl. Published 2014-08-13.
- Is CVE-2014-3511 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.