Multiple vulnerability in Digium Asterisk

1) Session hijacking

EUVDB-ID: #VU8063

Risk: Low

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:Clear]

CVE-ID: CVE-2017-14099

CWE-ID: CWE-384 - Session Fixation

Exploit availability: No

Description

The vulnerability allows a remote attacker to hijack the target user's media session.

The weakness exists due to a flaw in the strict RTP support feature. A remote attacker can send specially crafted RTP traffic to provide and receive media from the session.

Mitigation

The vulnerability is addressed in the following versions:
Asterisk Open Source - 11.25.2, 13.17.1, 14.6.1.
Certified Asterisk - 11.6-cert17, 13.13-cert5.

Vulnerable software versions

Certified Asterisk: 11.6.0 - 13.13

Asterisk Open Source: 11.0.0 - 14.4.1

CPE2.3

• cpe:2.3:a:digium_linux_support_services:certified_asterisk:13.13:*:*:*:*:rv110w_wireless-n_vpn_firewall:*:*
• cpe:2.3:a:digium_linux_support_services:asterisk:11.21.0:*:*:*:*:*:*:*
• cpe:2.3:a:digium_linux_support_services:asterisk:13.15.1:*:*:*:*:*:*:*
• cpe:2.3:a:digium_linux_support_services:asterisk:14.4.1:*:*:*:*:*:*:*

External links

https://downloads.asterisk.org/pub/security/AST-2017-005.html

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.

2) Command injection

EUVDB-ID: #VU8064

Risk: High

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Amber]

CVE-ID: CVE-2017-14100

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to execute arbitrary commands on the target system.

The weakness exists due to input validation flaw in the 'app_minivm' module. A remote attacker can send supply specially crafted caller-id name and number data and execute arbitrary operating system commands.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

The vulnerability is addressed in the following versions:
Asterisk Open Source - 11.25.2, 13.17.1, 14.6.1.
Certified Asterisk - 11.6-cert17, 13.13-cert5.

Vulnerable software versions

Certified Asterisk: 11.6.0 - 13.13

Asterisk Open Source: 11.0.0 - 14.4.1

CPE2.3

External links

https://downloads.asterisk.org/pub/security/AST-2017-006.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Improper input validation

EUVDB-ID: #VU8065

Risk: Low

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

CVE-ID: CVE-2017-14098

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The weakness exists due to a flaw in 'pjsip_message_ip_updater'. A remote attacker can submit a specially crafted URI in a 'From', 'To', and 'Contact' header and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

The vulnerability is addressed in the following versions: 13.17.1, 14.6.1.

Vulnerable software versions

Asterisk Open Source: 13.15.0 - 14.4.0

CPE2.3

• cpe:2.3:a:digium_linux_support_services:asterisk:13.15.0:*:*:*:*:*:*:*
• cpe:2.3:a:digium_linux_support_services:asterisk:14.4.0:*:*:*:*:*:*:*

External links

https://downloads.asterisk.org/pub/security/AST-2017-007.html

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.