Vulnerability CVE-2017-14099 - CERT Civis.Net

Vulnerability Name:

CVE-2017-14099 (CCN-131246)

Assigned:

2017-05-17

Published:

2017-05-17

Updated:

2017-11-04

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.

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): None Availibility (A): None

Vulnerability Type:

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2017-14099

Source: CONFIRM
Type: Vendor Advisory
http://downloads.asterisk.org/pub/security/AST-2017-005.html

Source: CCN
Type: Asterisk Project Security Advisory - AST-2017-005
Media takeover in RTP stack

Source: DEBIAN
Type: UNKNOWN
DSA-3964

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1039251

Source: CONFIRM
Type: Issue Tracking, Patch, Third Party Advisory
https://bugs.debian.org/873907

Source: XF
Type: UNKNOWN
asterisk-rtpstack-info-disc(131246)

Source: CONFIRM
Type: Issue Tracking, Patch, Third Party Advisory
https://issues.asterisk.org/jira/browse/ASTERISK-27013

Source: MISC
Type: Third Party Advisory
https://rtpbleed.com

Source: GENTOO
Type: UNKNOWN
GLSA-201710-29

Vulnerable Configuration:

Configuration 1:

cpe:/a:digium:asterisk:13.0.0:*:*:*:lts:*:*:*

OR cpe:/a:digium:asterisk:13.0.0:beta1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.0.0:beta2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.0.0:beta3:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.0.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.0.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.1.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.1.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.1.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.1.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.2.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.2.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.2.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.3.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.3.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.4.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.4.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.5.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.5.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.6.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.7.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.7.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.7.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.7.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.8.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.8.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.8.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.8.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.9.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.9.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.10.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.10.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.11.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.11.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.11.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.12:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.12.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.12.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.12.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.13:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.13.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.13.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.14.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.14.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.14.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.14.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.15.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.15.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.15.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.15.0:rc3:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.15.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.16.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.16.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.16.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.17.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:13.17.0:rc1:*:*:*:*:*:*

Configuration 2:

cpe:/a:digium:asterisk:14.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.0.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.0.0:beta1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.0.0:beta2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.0.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.0.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.0.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.0.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.01:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.1.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.1.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.1.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.02:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.2.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.2.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.3.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.3.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.3.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.3.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.4.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.4.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.4.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.4.0:rc3:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.4.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.5.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.5.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.5.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.6.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:14.6.0:rc1:*:*:*:*:*:*

Configuration 3:

cpe:/a:digium:asterisk:11.0.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.0.0:beta1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.0.0:beta2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.0.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.0.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.0.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.0.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.1.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.1.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.1.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.1.0:rc3:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.1.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.1.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.2.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.2.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.2.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.4.0:rc4:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.6.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.6.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.6.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.6.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.7.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.7.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.7.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.8.0:-:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.8.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.8.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.8.0:rc3:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.8.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.9.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.9.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.9.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.9.0:rc3:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.10.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.10.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.10.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.10.1:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.10.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.11.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.11.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.12.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.12.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.12.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.13.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.13.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.13.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.14.0:*:*:*:lts:*:*:*

OR cpe:/a:digium:asterisk:11.14.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.14.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.14.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.14.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.15.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.15.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.15.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.16.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.17.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.17.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.18.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.18.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.19.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.20.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.21.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.21.0:rc2:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.21.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.21.2:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.22.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.22.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.23.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.23.0:rc1:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.23.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.24.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.24.1:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.25.0:*:*:*:*:*:*:*

OR cpe:/a:digium:asterisk:11.25.1:*:*:*:*:*:*:*

Configuration 4:

cpe:/a:digium:certified_asterisk:11.6:cert1:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert10:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert11:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert12:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert13:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert14:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert14_rc1:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert14_rc2:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert15:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert16:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert1_rc1:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert1_rc2:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert2:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert3:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert4:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert5:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert6:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert7:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert8:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:11.6:cert9:*:*:*:*:*:*

Configuration 5:

cpe:/a:digium:certified_asterisk:13.13:cert1:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:13.13:cert1_rc1:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:13.13:cert1_rc2:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:13.13:cert1_rc3:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:13.13:cert1_rc4:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:13.13:cert2:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:13.13:cert3:*:*:*:*:*:*

OR cpe:/a:digium:certified_asterisk:13.13:cert4:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.xenial:def:2017140990000000	V	CVE-2017-14099 on Ubuntu 16.04 LTS (xenial) - low.	2017-09-02
oval:com.ubuntu.artful:def:201714099000	V	CVE-2017-14099 on Ubuntu 17.10 (artful) - untriaged.	2017-09-02
oval:com.ubuntu.xenial:def:201714099000	V	CVE-2017-14099 on Ubuntu 16.04 LTS (xenial) - low.	2017-09-02
oval:com.ubuntu.disco:def:2017140990000000	V	CVE-2017-14099 on Ubuntu 19.04 (disco) - low.	2017-09-02
oval:com.ubuntu.bionic:def:201714099000	V	CVE-2017-14099 on Ubuntu 18.04 LTS (bionic) - low.	2017-09-02
oval:com.ubuntu.cosmic:def:2017140990000000	V	CVE-2017-14099 on Ubuntu 18.10 (cosmic) - low.	2017-09-02
oval:com.ubuntu.cosmic:def:201714099000	V	CVE-2017-14099 on Ubuntu 18.10 (cosmic) - low.	2017-09-02
oval:com.ubuntu.bionic:def:2017140990000000	V	CVE-2017-14099 on Ubuntu 18.04 LTS (bionic) - low.	2017-09-02
oval:com.ubuntu.trusty:def:201714099000	V	CVE-2017-14099 on Ubuntu 14.04 LTS (trusty) - low.	2017-09-02