OpenSSL 1.0.1 and 1.0.2 beta contain a vulnerability that could disclose sensitive private information to an attacker. This vulnerability is commonly referred to as "heartbleed."
OpenSSL versions 1.0.1 through 1.0.1f and 1.0.2 beta through 1.0.2-beta1 contain a flaw in its implementation of the TLS/DTLS heartbeat functionality (RFC6520). This flaw allows an attacker to retrieve private memory of an application that uses the vulnerable OpenSSL libssl library in chunks of up to 64k at a time. Note that an attacker can repeatedly leverage the vulnerability to increase the chances that a leaked chunk contains the intended secrets. The sensitive information that may be retrieved using this vulnerability include:
Please see the Heartbleed website for more details. Exploit code for this vulnerability is publicly available. Any service that supports STARTTLS (imap,smtp,http,pop) may also be affected.
By attacking a service that uses a vulnerable version of OpenSSL, a remote, unauthenticated attacker may be able to retrieve sensitive information, such as secret keys. By leveraging this information, an attacker may be able to decrypt, spoof, or perform man-in-the-middle attacks on network traffic that would otherwise be protected by OpenSSL.
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Disable OpenSSL heartbeat support
This vulnerability was reported by OpenSSL, who in turn credits Riku, Antti and Matti at Codenomicon and Neel Mehta of Google Security.
|Date First Published:||2014-04-08|
|Date Last Updated:||2016-05-13 15:26 UTC|