SynopsisThe remote Windows host contains a program that is affected by multiple vulnerabilities.
DescriptionThe version of stunnel installed on the remote host is prior to version 5.03. It is, therefore, affected by the following vulnerabilities in the bundled OpenSSL library :
- A memory double-free error exists related to handling DTLS packets that allows denial of service attacks.
- An unspecified error exists related to handling DTLS handshake messages that allows denial of service attacks due to large amounts of memory being consumed.
- A memory leak error exists related to handling specially crafted DTLS packets that allows denial of service attacks. (CVE-2014-3507)
- An error exists related to 'OBJ_obj2txt' and the pretty printing 'X509_name_*' functions which leak stack data, resulting in an information disclosure. (CVE-2014-3508)
- An error exists related to 'ec point format extension' handling and multithreaded clients that allows freed memory to be overwritten during a resumed session.
- A NULL pointer dereference error exists related to handling anonymous ECDH cipher suites and crafted handshake messages that allow denial of service attacks against clients. (CVE-2014-3510)
- An error exists related to handling fragmented 'ClientHello' messages that could allow a man-in-the-middle attacker to force usage of TLS 1.0 regardless of higher protocol levels being supported by both the server and the client. (CVE-2014-3511)
- A buffer overflow error exists related to handling Secure Remote Password protocol (SRP) parameters having unspecified impact. (CVE-2014-3512)
- A NULL pointer dereference error exists related to handling Secure Remote Password protocol (SRP) that allows a malicious server to crash a client, resulting in a denial of service. (CVE-2014-5139
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
SolutionUpgrade to stunnel version 5.03 or later.