Information disclosure in HPE NonStop Application Server for Java (NSASJ)

1) Information disclosure

EUVDB-ID: #VU1914

Risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:F/RL:O/RC:C]

CVE-ID: CVE-2016-0800

CWE-ID: CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to decrypt sensitive information.

The vulnerability exists due to usage of weak SSLv2 protocol, which requires to send a ServerVerify message before establishing that a client possesses certain plaintext RSA data. A remote attacker can decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle.

The vulnerability is dubbed "DROWN" attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

NonStop Application Server for Java (NSASJ): All versions

External links

http://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=emr_na-c05176765

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.