Buffer Over-read in OpenSSL

1) Buffer Over-read

EUVDB-ID: #VU642

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-2176

CWE-ID: CWE-126 - Buffer over-read

Exploit availability: No

Description

The vulnerability allows a remote to cause buffer over-read on the target system.

The weakness exists due to overread in applications using the X509_NAME_oneline() function on EBCDIC systems. The vulnerability leads to arbitrary stack data return to the buffer.

Successful exploitation of the weakness results in buffer over-read on the vulnerable system.

Mitigation

Update 1.0.1 to 1.0.1t.
Update 1.0.2 to 1.0.2h.

Vulnerable software versions

OpenSSL: 1.0.1 - 1.0.2

Oracle Solaris: 10 - 11.3

Oracle Access Manager: 10.1.4.2 - 11.1.1.7

Oracle Exalogic Infrastructure: 1.0 - 2.0

PeopleSoft Enterprise PeopleTools: 8.53 - 8.55

Oracle VM VirtualBox: 5.0.20

Oracle E-Business Suite: 12.1.3

Oracle Agile Engineering Data Management: 6.1.3.0 - 6.2.0.0

Oracle Commerce Guided Search: 6.2.2 - 6.5.2

Primavera P6 Professional Project Management: 8.3 - 16.0

macOS: 10.11 - 10.11.5

External links

http://www.openssl.org/news/secadv/20160503.txt
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://support.apple.com/cs-cz/HT206903

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.