IBM i update for RC4 algorithm

1) Information disclosure

EUVDB-ID: #VU90

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-2808

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information communicated by target system.

The vulnerability exists due to access control error. A remote unauthenticated attacker can obtain RC4 encrypted data and conduct a brute-force key guessing attack by monitoring TLS network traffic.

Successful exploitation of this vulnerability may result in disclosure of system information.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM i: 6.1 - 7.2

CPE2.3

• cpe:2.3:o:ibm_corporation:ibm_i:6.1:*:*:*:*:*:*:*
• cpe:2.3:o:ibm_corporation:ibm_i:7.1:*:*:*:*:*:*:*
• cpe:2.3:o:ibm_corporation:ibm_i:7.2:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/646213

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.