Synopsis
The remote service is affected by multiple vulnerabilities.
Description
According to its banner, the remote web server uses a version of OpenSSL 1.0.0 prior to 1.0.0m. The OpenSSL library is, therefore, reportedly affected by the following vulnerabilities :
- An error exists in the function 'ssl3_read_bytes' that could allow data to be injected into other sessions or allow denial of service attacks. Note this issue is only exploitable if 'SSL_MODE_RELEASE_BUFFERS' is enabled. (CVE-2010-5298)
- An error exists related to the implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA) that could allow nonce disclosure via the 'FLUSH+RELOAD' cache side-channel attack. (CVE-2014-0076)
- A buffer overflow error exists related to invalid DTLS fragment handling that could lead to execution of arbitrary code. Note this issue only affects OpenSSL when used as a DTLS client or server. (CVE-2014-0195)
- An error exists in the function 'do_ssl3_write' that could allow a NULL pointer to be dereferenced leading to denial of service attacks. Note this issue is exploitable only if 'SSL_MODE_RELEASE_BUFFERS' is enabled. (CVE-2014-0198)
- An error exists related to DTLS handshake handling that could lead to denial of service attacks. Note this issue only affects OpenSSL when used as a DTLS client.
(CVE-2014-0221)
- An unspecified error exists that could allow an attacker to cause usage of weak keying material leading to simplified man-in-the-middle attacks.
(CVE-2014-0224)
- An unspecified error exists related to anonymous ECDH ciphersuites that could allow denial of service attacks. Note this issue only affects OpenSSL TLS clients. (CVE-2014-3470)
- An integer underflow condition exists in the EVP_DecodeUpdate() function due to improper validation of base64 encoded input when decoding. This allows a remote attacker, using maliciously crafted base64 data, to cause a segmentation fault or memory corruption, resulting in a denial of service or possibly the execution of arbitrary code. (CVE-2015-0292)
Solution
Upgrade to OpenSSL 1.0.0m or later.
Plugin Details
File Name: openssl_1_0_0m.nasl
Risk Information
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Temporal Vector: E:F/RL:OF/RC:C
Vulnerability Information
CPE: cpe:/a:openssl:openssl
Required KB Items: openssl/port
Exploit Ease: Exploits are available
Patch Publication Date: 4/7/2014
Vulnerability Publication Date: 2/24/2014
Exploitable With
Core Impact
Reference Information
CVE: CVE-2010-5298, CVE-2014-0076, CVE-2014-0195, CVE-2014-0198, CVE-2014-0221, CVE-2014-0224, CVE-2014-3470, CVE-2015-0292
BID: 66363, 66801, 67193, 67898, 67899, 67900, 67901, 73228