F5 BIG-IP update for OpenSSL

1) Null pointer dereference

EUVDB-ID: #VU14163

Risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-10708

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to improper processing of out-of-sequence NEWKEYS messages, as defined in the kex.c and packet.c source code files. A remote attacker can send an out-of-sequence NEWKEYS message, trigger a NULL pointer dereference condition and cause the sshd daemon to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

BIG-IP: 11.0.0 HF1 - 14.0.1.1

CPE2.3

• cpe:2.3:h:f5_networks:big-ip:11.0.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:11.1.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:11.2.1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:11.3.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:11.4.1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:11.5.10:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:11.6.5.3:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:12.1.5.3:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:13.1.3:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:14.0.1.1:*:*:*:*:*:*:*

External links

https://my.f5.com/manage/s/article/K32485746

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.