CVE-2017-14099CVE-2017-14099

Affected configuration(s):

cpe:/a:digium:asterisk:11.0.0
cpe:/a:digium:asterisk:11.0.0:beta1
cpe:/a:digium:asterisk:11.0.0:beta2
cpe:/a:digium:asterisk:11.0.0:rc1
cpe:/a:digium:asterisk:11.0.0:rc2
cpe:/a:digium:asterisk:11.0.1
cpe:/a:digium:asterisk:11.0.2
cpe:/a:digium:asterisk:11.1.0
cpe:/a:digium:asterisk:11.1.0:rc1
cpe:/a:digium:asterisk:11.1.0:rc2
cpe:/a:digium:asterisk:11.1.0:rc3
cpe:/a:digium:asterisk:11.1.1
cpe:/a:digium:asterisk:11.1.2
cpe:/a:digium:asterisk:11.2.0:rc1
cpe:/a:digium:asterisk:11.2.1
cpe:/a:digium:asterisk:11.2.2
cpe:/a:digium:asterisk:11.4.0:rc4
cpe:/a:digium:asterisk:11.6.0
cpe:/a:digium:asterisk:11.6.0:rc1
cpe:/a:digium:asterisk:11.6.0:rc2
cpe:/a:digium:asterisk:11.6.1
cpe:/a:digium:asterisk:11.7.0
cpe:/a:digium:asterisk:11.7.0:rc1
cpe:/a:digium:asterisk:11.7.0:rc2
cpe:/a:digium:asterisk:11.8.0:-
cpe:/a:digium:asterisk:11.8.0:rc1
cpe:/a:digium:asterisk:11.8.0:rc2
cpe:/a:digium:asterisk:11.8.0:rc3
cpe:/a:digium:asterisk:11.8.1
cpe:/a:digium:asterisk:11.9.0
cpe:/a:digium:asterisk:11.9.0:rc1
cpe:/a:digium:asterisk:11.9.0:rc2
cpe:/a:digium:asterisk:11.9.0:rc3
cpe:/a:digium:asterisk:11.10.0
cpe:/a:digium:asterisk:11.10.0:rc1
cpe:/a:digium:asterisk:11.10.1
cpe:/a:digium:asterisk:11.10.1:rc1
cpe:/a:digium:asterisk:11.10.2
cpe:/a:digium:asterisk:11.11.0
cpe:/a:digium:asterisk:11.11.0:rc1
cpe:/a:digium:asterisk:11.12.0
cpe:/a:digium:asterisk:11.12.0:rc1
cpe:/a:digium:asterisk:11.12.1
cpe:/a:digium:asterisk:11.13.0
cpe:/a:digium:asterisk:11.13.0:rc1
cpe:/a:digium:asterisk:11.13.1
cpe:/a:digium:asterisk:11.14.0::~~lts~~~
cpe:/a:digium:asterisk:11.14.0:rc1
cpe:/a:digium:asterisk:11.14.0:rc2
cpe:/a:digium:asterisk:11.14.1
cpe:/a:digium:asterisk:11.14.2
cpe:/a:digium:asterisk:11.15.0:rc1
cpe:/a:digium:asterisk:11.15.0:rc2
cpe:/a:digium:asterisk:11.15.1
cpe:/a:digium:asterisk:11.16.0:rc1
cpe:/a:digium:asterisk:11.17.0:rc1
cpe:/a:digium:asterisk:11.17.1
cpe:/a:digium:asterisk:11.18.0
cpe:/a:digium:asterisk:11.18.0:rc1
cpe:/a:digium:asterisk:11.19.0:rc1
cpe:/a:digium:asterisk:11.20.0:rc1
cpe:/a:digium:asterisk:11.21.0:rc1
cpe:/a:digium:asterisk:11.21.0:rc2
cpe:/a:digium:asterisk:11.21.1
cpe:/a:digium:asterisk:11.21.2
cpe:/a:digium:asterisk:11.22.0
cpe:/a:digium:asterisk:11.22.0:rc1
cpe:/a:digium:asterisk:11.23.0
cpe:/a:digium:asterisk:11.23.0:rc1
cpe:/a:digium:asterisk:11.23.1
cpe:/a:digium:asterisk:11.24.0
cpe:/a:digium:asterisk:11.24.1
cpe:/a:digium:asterisk:11.25.0
cpe:/a:digium:asterisk:11.25.1
cpe:/a:digium:asterisk:13.0.0::~~lts~~~
cpe:/a:digium:asterisk:13.0.0:beta1
cpe:/a:digium:asterisk:13.0.0:beta2
cpe:/a:digium:asterisk:13.0.0:beta3
cpe:/a:digium:asterisk:13.0.1
cpe:/a:digium:asterisk:13.0.2
cpe:/a:digium:asterisk:13.1.0
cpe:/a:digium:asterisk:13.1.0:rc1
cpe:/a:digium:asterisk:13.1.0:rc2
cpe:/a:digium:asterisk:13.1.1
cpe:/a:digium:asterisk:13.2.0
cpe:/a:digium:asterisk:13.2.0:rc1
cpe:/a:digium:asterisk:13.2.1
cpe:/a:digium:asterisk:13.3.0:rc1
cpe:/a:digium:asterisk:13.3.2
cpe:/a:digium:asterisk:13.4.0
cpe:/a:digium:asterisk:13.4.0:rc1
cpe:/a:digium:asterisk:13.5.0
cpe:/a:digium:asterisk:13.5.0:rc1
cpe:/a:digium:asterisk:13.6.0:rc1
cpe:/a:digium:asterisk:13.7.0:rc1
cpe:/a:digium:asterisk:13.7.0:rc2
cpe:/a:digium:asterisk:13.7.1
cpe:/a:digium:asterisk:13.7.2
cpe:/a:digium:asterisk:13.8.0
cpe:/a:digium:asterisk:13.8.0:rc1
cpe:/a:digium:asterisk:13.8.1
cpe:/a:digium:asterisk:13.8.2
cpe:/a:digium:asterisk:13.9.0
cpe:/a:digium:asterisk:13.9.1
cpe:/a:digium:asterisk:13.10.0
cpe:/a:digium:asterisk:13.10.0:rc1
cpe:/a:digium:asterisk:13.11.0
cpe:/a:digium:asterisk:13.11.1
cpe:/a:digium:asterisk:13.11.2
cpe:/a:digium:asterisk:13.12
cpe:/a:digium:asterisk:13.12.0
cpe:/a:digium:asterisk:13.12.1
cpe:/a:digium:asterisk:13.12.2
cpe:/a:digium:asterisk:13.13
cpe:/a:digium:asterisk:13.13.0
cpe:/a:digium:asterisk:13.13.1
cpe:/a:digium:asterisk:13.14.0
cpe:/a:digium:asterisk:13.14.0:rc1
cpe:/a:digium:asterisk:13.14.0:rc2
cpe:/a:digium:asterisk:13.14.1
cpe:/a:digium:asterisk:13.15.0
cpe:/a:digium:asterisk:13.15.0:rc1
cpe:/a:digium:asterisk:13.15.0:rc2
cpe:/a:digium:asterisk:13.15.0:rc3
cpe:/a:digium:asterisk:13.15.1
cpe:/a:digium:asterisk:13.16.0
cpe:/a:digium:asterisk:13.16.0:rc1
cpe:/a:digium:asterisk:13.16.0:rc2
cpe:/a:digium:asterisk:13.17.0
cpe:/a:digium:asterisk:13.17.0:rc1
cpe:/a:digium:asterisk:14.0
cpe:/a:digium:asterisk:14.0.0
cpe:/a:digium:asterisk:14.0.0:beta1
cpe:/a:digium:asterisk:14.0.0:beta2
cpe:/a:digium:asterisk:14.0.0:rc1
cpe:/a:digium:asterisk:14.0.0:rc2
cpe:/a:digium:asterisk:14.0.1
cpe:/a:digium:asterisk:14.0.2
cpe:/a:digium:asterisk:14.01
cpe:/a:digium:asterisk:14.1.0
cpe:/a:digium:asterisk:14.1.1
cpe:/a:digium:asterisk:14.1.2
cpe:/a:digium:asterisk:14.2
cpe:/a:digium:asterisk:14.2.0
cpe:/a:digium:asterisk:14.2.1
cpe:/a:digium:asterisk:14.3.0
cpe:/a:digium:asterisk:14.3.0:rc1
cpe:/a:digium:asterisk:14.3.0:rc2
cpe:/a:digium:asterisk:14.3.1
cpe:/a:digium:asterisk:14.4.0
cpe:/a:digium:asterisk:14.4.0:rc1
cpe:/a:digium:asterisk:14.4.0:rc2
cpe:/a:digium:asterisk:14.4.0:rc3
cpe:/a:digium:asterisk:14.4.1
cpe:/a:digium:asterisk:14.5.0
cpe:/a:digium:asterisk:14.5.0:rc1
cpe:/a:digium:asterisk:14.5.0:rc2
cpe:/a:digium:asterisk:14.6.0
cpe:/a:digium:asterisk:14.6.0:rc1
cpe:/a:digium:certified_asterisk:11.6:cert1
cpe:/a:digium:certified_asterisk:11.6:cert10
cpe:/a:digium:certified_asterisk:11.6:cert11
cpe:/a:digium:certified_asterisk:11.6:cert12
cpe:/a:digium:certified_asterisk:11.6:cert13
cpe:/a:digium:certified_asterisk:11.6:cert14
cpe:/a:digium:certified_asterisk:11.6:cert14_rc1
cpe:/a:digium:certified_asterisk:11.6:cert14_rc2
cpe:/a:digium:certified_asterisk:11.6:cert15
cpe:/a:digium:certified_asterisk:11.6:cert16
cpe:/a:digium:certified_asterisk:11.6:cert1_rc1
cpe:/a:digium:certified_asterisk:11.6:cert1_rc2
cpe:/a:digium:certified_asterisk:11.6:cert2
cpe:/a:digium:certified_asterisk:11.6:cert3
cpe:/a:digium:certified_asterisk:11.6:cert4
cpe:/a:digium:certified_asterisk:11.6:cert5
cpe:/a:digium:certified_asterisk:11.6:cert6
cpe:/a:digium:certified_asterisk:11.6:cert7
cpe:/a:digium:certified_asterisk:11.6:cert8
cpe:/a:digium:certified_asterisk:11.6:cert9
cpe:/a:digium:certified_asterisk:13.13:cert1
cpe:/a:digium:certified_asterisk:13.13:cert1_rc1
cpe:/a:digium:certified_asterisk:13.13:cert1_rc2
cpe:/a:digium:certified_asterisk:13.13:cert1_rc3
cpe:/a:digium:certified_asterisk:13.13:cert1_rc4
cpe:/a:digium:certified_asterisk:13.13:cert2
cpe:/a:digium:certified_asterisk:13.13:cert3
cpe:/a:digium:certified_asterisk:13.13:cert4

Date published: 2017-09-02T12:29:00.287-04:00

Date last modified: 2017-11-03T21:29:35.443-04:00

CVSS Score: 5.0

Principal attack vector: NETWORK

Complexity:  LOW

Reference URL: http://downloads.asterisk.org/pub/security/AST-2017-005.html

Summary: In res/res_rtp_asterisk.c in Asterisk 11.x before 11.25.2, 13.x before 13.17.1, and 14.x before 14.6.1 and Certified Asterisk 11.x before 11.6-cert17 and 13.x before 13.13-cert5, unauthorized data disclosure (media takeover in the RTP stack) is possible with careful timing by an attacker. The “strictrtp” option in rtp.conf enables a feature of the RTP stack that learns the source address of media for a session and drops any packets that do not originate from the expected address. This option is enabled by default in Asterisk 11 and above. The “nat” and “rtp_symmetric” options (for chan_sip and chan_pjsip, respectively) enable symmetric RTP support in the RTP stack. This uses the source address of incoming media as the target address of any sent media. This option is not enabled by default, but is commonly enabled to handle devices behind NAT. A change was made to the strict RTP support in the RTP stack to better tolerate late media when a reinvite occurs. When combined with the symmetric RTP support, this introduced an avenue where media could be hijacked. Instead of only learning a new address when expected, the new code allowed a new source address to be learned at all times. If a flood of RTP traffic was received, the strict RTP support would allow the new address to provide media, and (with symmetric RTP enabled) outgoing traffic would be sent to this new address, allowing the media to be hijacked. Provided the attacker continued to send traffic, they would continue to receive traffic as well.

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