Multiple vulnerabilities in Asterisk



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID N/A
CWE-ID CWE-835
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Asterisk Open Source
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor Digium (Linux Support Services)

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Infinite loop

EUVDB-ID: #VU13261

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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

The vulnerability exists due to an error when processing malicious input. A remote attacker can send specially crafted data via TCP/TLS or abruptly disconnect to trigger an iostream read error and cause the target service to enter an infinite loop and become unusable.

Mitigation

Update to version 15.4.1.

Vulnerable software versions

Asterisk Open Source: 15.0.0 - 15.2.2

CPE2.3 External links

https://downloads.asterisk.org/pub/security/AST-2018-007.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.

2) Information disclosure

EUVDB-ID: #VU13262

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: N/A

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to an error when the system is configured with endpoint-specific access control list (ACL) rules. A remote attacker can send a SIP request to cause the system to return a 403 Forbidden response and disclose the existence of the PJSIP endpoint.

Mitigation

Update to version 13.21.1, 14.7.7 or 15.4.1.

Vulnerable software versions

Asterisk Open Source: 13.0.0 - 15.2.2

CPE2.3 External links

https://downloads.asterisk.org/pub/security/AST-2018-008.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.



###SIDEBAR###