Heap overflow in OpenSSL

Published: 2016-05-05 | Updated: 2017-01-13

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2016-2105
CWE-ID	CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	OpenSSL Server applications / Encryption software Oracle Solaris Operating systems & Components / Operating system Oracle Linux Operating systems & Components / Operating system macOS Operating systems & Components / Operating system Oracle Access Manager Server applications / Directory software, identity management Oracle Exalogic Infrastructure Server applications / Remote management servers, RDP, SSH Oracle Enterprise Manager Ops Center Server applications / Remote management servers, RDP, SSH PeopleSoft Enterprise PeopleTools Client/Desktop applications / Office applications Oracle VM VirtualBox Server applications / Virtualization software Oracle Secure Global Desktop Client/Desktop applications / Virtualization software Oracle E-Business Suite Web applications / E-Commerce systems Oracle Commerce Guided Search Web applications / E-Commerce systems Oracle Agile Engineering Data Management Other software / Other software solutions Oracle Life Sciences Data Hub Other software / Other software solutions Oracle VM Server for x86 Server applications / Other server solutions
Vendor	OpenSSL Software Foundation Oracle Apple Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Heap overflow

EUVDB-ID: #VU640

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-2105

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote user to cause heap overflow on the target system.

The weakness is caused by insufficient input validation. By sending a great deal of input data attackers are able to cause overflow of the EVP_EncodeUpdate() function used for binary data encoding.

Successful exploitation of the vulnerability may result in heap overflow 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 Secure Global Desktop: 4.63 - 5.2

: 5.6.29 - 5.7.11

Oracle Enterprise Manager Ops Center: 12.1.4 - 12.3.2

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

Oracle Life Sciences Data Hub: 2.1

Oracle VM Server for x86: 3.2

Oracle Linux: 5 - 7

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://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.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.