| VID |
22713 |
| Severity |
40 |
| Port |
80, ... |
| Protocol |
TCP |
| Class |
WWW |
| Detailed Description |
According to its banner, the remote host is running a version of OpenSSL 1.0.2 prior to 1.0.2g. It is, therefore, affected by the following vulnerabilities :
- A key disclosure vulnerability exists due to improper handling of cache-bank conflicts on the Intel Sandy-bridge microarchitecture. An attacker can exploit this to gain access to RSA key information. (CVE-2016-0702)
- A double-free error exists due to improper validation of user-supplied input when parsing malformed DSA private keys. A remote attacker can exploit this to corrupt memory, resulting in a denial of service condition or the execution of arbitrary code. (CVE-2016-0705)
- A NULL pointer dereference flaw exists in the BN_hex2bn() and BN_dec2bn() functions. A remote attacker can exploit this to trigger a heap corruption, resulting in the execution of arbitrary code. (CVE-2016-0797)
- A denial of service vulnerability exists due to improper handling of invalid usernames. A remote attacker can exploit this, via a specially crafted username, to leak 300 bytes of memory per connection, exhausting available memory resources. (CVE-2016-0798)
- Multiple memory corruption issues exist that allow a remote attacker to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-0799)
- A flaw exists that allows a cross-protocol Bleichenbacher padding oracle attack known as DROWN (Decrypting RSA with Obsolete and Weakened eNcryption). This vulnerability exists due to a flaw in the Secure Sockets Layer Version 2 (SSLv2) implementation, and it allows captured TLS traffic to be decrypted. A man-in-the-middle attacker can exploit this to decrypt the TSL connection by utilizing previously captured traffic and weak cryptography along with a series of specially crafted connections to an SSLv2 server that uses the same private key. (CVE-2016-0800)
* References:
https://www.openssl.org/news/secadv/20160301.txt
https://www.openssl.org/news/cl102.txt
https://drownattack.com/
https://www.drownattack.com/drown-attack-paper.pdf
* Platforms Affected:
OpenSSL 1.0.2 before 1.0.2g
Linux Any version
Unix Any version
Microsoft Windows Any version |
| Recommendation |
Upgrade to the latest version of OpenSSL (1.0.2g or later), available from the OpenSSL Web site at http://www.openssl.org/ |
| Related URL |
CVE-2016-0702,CVE-2016-0705,CVE-2016-0797,CVE-2016-0798,CVE-2016-0799,CVE-2016-0800 (CVE) |
| Related URL |
(SecurityFocus) |
| Related URL |
(ISS) |
|
