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VID 22694
Severity 30
Port 80, ...
Protocol TCP
Class WWW
Detailed Description According to its self-reported version number, the instance of Apache Tomcat 8.0 listening on the remote host is earlier than Tomcat 8.0.21 and, therefore, may be affected by the following vulnerabilities :

- A NULL pointer dereference flaw exists when the SSLv3 option isn't enabled and an SSLv3 ClientHello is received. This allows a remote attacker, using an unexpected handshake, to crash the daemon.

- The BIGNUM squaring (BN_sqr) implementation does not properly calculate the square of a BIGNUM value. This allows remote attackers to defeat cryptographic protection mechanisms.

- A NULL pointer dereference flaw exists with dtls1_get_record when handling DTLS messages. A remote attacker, using a specially crafted DTLS message, can cause a denial of service.

- A flaw exists with ECDH handshakes when using an ECDSA certificate without a ServerKeyExchange message. This allows a remote attacker to trigger a loss of forward secrecy from the ciphersuite.

- A flaw exists when accepting non-DER variations of certificate signature algorithms and signature encodings due to a lack of enforcement of matches between signed and unsigned portions. A remote attacker, by including crafted data within a certificate's unsigned portion, can bypass fingerprint-based certificate-blacklist protection mechanisms.

- A flaw exists when handling an RSA temporary key in a non-export RSA key exchange ciphersuite. This allows a remote attacker to downgrade the security of the session.

- A flaw exists when accepting DH certificates for client authentication without the CertificateVerify message. This allows a remote attacker to authenticate to the service without a private key.

- A memory leak occurs in dtls1_buffer_record when handling a saturation of DTLS records containing the same number sequence but for the next epoch. This allows a remote attacker to cause a denial of service.

- A use-after-free condition exists in the d2i_ECPrivateKey() function due to improper processing of malformed EC private key files during import. A remote attacker can exploit this to dereference or free already freed memory, resulting in a denial of service or other unspecified impact.

- An invalid read flaw exists in the ASN1_TYPE_cmp() function due to improperly performed boolean-type comparisons. A remote attacker can exploit this, via a crafted X.509 certificate to an endpoint that uses the certificate-verification feature, to cause an invalid read operation, resulting in a denial of service.

- A flaw exists in the ASN1_item_ex_d2i() function due to a failure to reinitialize 'CHOICE' and 'ADB' data structures when reusing a structure in ASN.1 parsing. This allows a remote attacker to cause an invalid write operation and memory corruption, resulting in a denial of service.

- A NULL pointer dereference flaw exists in the X509_to_X509_REQ() function due to improper processing of certificate keys. This allows a remote attacker, via a crafted X.509 certificate, to cause a denial of service.

- A NULL pointer dereference flaw exists in the PKCS#7 parsing code due to incorrect handling of missing outer ContentInfo. This allows a remote attacker, using an application that processes arbitrary PKCS#7 data and providing malformed data with ASN.1 encoding, to cause a denial of service.

- A flaw exists in servers that both support SSLv2 and enable export cipher suites due to improper implementation of SSLv2. A remote attacker can exploit this, via a crafted CLIENT-MASTER-KEY message, to cause a denial of service.

* Note: This check solely relied on the version number of the remote Web server to assess this vulnerability, so this might be a false positive.

* Platforms Affected:
Apache Tomcat Server versions prior to 8.0.21
Any operating system Any version
Recommendation Upgrade to the latest version of Apache Tomcat Server (8.0.21 or later), available from the Apache Software Foundation download site, http://tomcat.apache.org/
Related URL CVE-2014-3569,CVE-2014-3570,CVE-2014-3571,CVE-2014-3572,CVE-2014-8275,CVE-2015-0204,CVE-2015-0205,CVE-2015-0206,CVE-2015-0209,CVE-2015-0286 (CVE)
Related URL 71934,71935,71936,71937,71939,71940,71941,71942,73225,73227,73231,73232,73237,73239 (SecurityFocus)
Related URL (ISS)