Synopsis
The remote Apache Tomcat server is affected by multiple vulnerabilities.
Description
According to its self-reported version number, the Apache Tomcat service listening on the remote host is 7.0.x prior to 7.0.57. It is, therefore, affected by the following vulnerabilities :
- A memory double-free error exists in 'd1_both.c' related to handling DTLS packets that allows denial of service attacks. (CVE-2014-3505)
- An unspecified error exists in 'd1_both.c' related to handling DTLS handshake messages that allows denial of service attacks due to large amounts of memory being consumed. (CVE-2014-3506)
- A memory leak error exists in 'd1_both.c' related to handling specially crafted DTLS packets that allows denial of service attacks. (CVE-2014-3507)
- An error exists in the 'OBJ_obj2txt' function when various 'X509_name_*' pretty printing functions are used, which leak process 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.
(CVE-2014-3509)
- A NULL pointer dereference error exists related to handling anonymous ECDH cipher suites and crafted handshake messages that allows denial of service attacks against clients. (CVE-2014-3510)
- An error exists related to handling fragmented 'ClientHello' messages that allows 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)
- Buffer overflow errors exist in 'srp_lib.c' related to handling Secure Remote Password protocol (SRP) parameters, which can allow a denial of service or have other unspecified impact. (CVE-2014-3512)
- A memory leak issue exists in 'd1_srtp.c' related to the DTLS SRTP extension handling and specially crafted handshake messages that can allow denial of service attacks. (CVE-2014-3513)
- An error exists related to the way SSL 3.0 handles padding bytes when decrypting messages encrypted using block ciphers in cipher block chaining (CBC) mode.
Man-in-the-middle attackers can decrypt a selected byte of a cipher text in as few as 256 tries if they are able to force a victim application to repeatedly send the same data over newly created SSL 3.0 connections. This is also known as the 'POODLE' issue. (CVE-2014-3566)
- A memory leak issue exists in 't1_lib.c' related to session ticket handling that can allow denial of service attacks. (CVE-2014-3567)
- An error exists related to the build configuration process and the 'no-ssl3' build option that allows servers and clients to process insecure SSL 3.0 handshake messages. (CVE-2014-3568)
- A NULL pointer dereference error exists in 't1_lib.c', related to handling Secure Remote Password protocol (SRP) ServerHello messages, which allows a malicious server to crash a client, resulting in a denial of service. (CVE-2014-5139)
Note that Nessus has not attempted to exploit these issues but has instead relied only on the application's self-reported version number.
Solution
Update to Apache Tomcat version 7.0.57 or later.