NVD - CVE-2017-14099

CVE-2017-14099 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Current Description

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.

Source: MITRE
Description Last Modified: 09/02/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 3.9

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

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0

Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://downloads.asterisk.org/pub/security/AST-2017-005.html	Vendor Advisory
http://www.debian.org/security/2017/dsa-3964
http://www.securitytracker.com/id/1039251	Third Party Advisory VDB Entry
https://bugs.debian.org/873907	Issue Tracking Patch Third Party Advisory
https://issues.asterisk.org/jira/browse/ASTERISK-27013	Issue Tracking Patch Third Party Advisory
https://rtpbleed.com	Third Party Advisory
https://security.gentoo.org/glsa/201710-29

Technical Details

Vulnerability Type (View All)

Information Leak / Disclosure (CWE-200)

Vulnerable software and versions Switch to CPE 2.2

Showing 100 of 190 CPEs, view all CPEs here.

Denotes Vulnerable Software
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Change History

4 change records found - show changes

Initial Analysis - 9/20/2017 3:25:33 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 4045 characters. View Entire Change Record OR cpe:2.3:a:digium:asterisk:11.0.0::::::: cpe:2.3:a:digium:asterisk:11.0.0:beta1::::::* cpe:2.3:a:digium:asterisk:11.0.0:beta2::::::* cpe:2.3:a:digium:asterisk:11.0.0:rc1::::::* cpe:2.3:a:digium:asterisk:11.0.0:rc2::::::* cpe:2.3:a:digium:asterisk:11.0.1::::::: cpe:2.3:a:digium:asterisk:11.0.2::::::: cpe:2.3:a:digium:asterisk:11.1.0::::::: cpe:2.3:a:digium:asterisk:11.1.0:rc1::::::* *
Added	CPE Configuration		Record truncated, showing 500 of 3044 characters. View Entire Change Record OR cpe:2.3:a:digium:asterisk:13.0.0::::lts:::* cpe:2.3:a:digium:asterisk:13.0.0:beta1::::::* cpe:2.3:a:digium:asterisk:13.0.0:beta2::::::* cpe:2.3:a:digium:asterisk:13.0.0:beta3::::::* cpe:2.3:a:digium:asterisk:13.0.1::::::: cpe:2.3:a:digium:asterisk:13.0.2::::::: cpe:2.3:a:digium:asterisk:13.1.0::::::: cpe:2.3:a:digium:asterisk:13.1.0:rc1::::::* cpe:2.3:a:digium:asterisk:13.1.0:rc2::::::*
Added	CPE Configuration		Record truncated, showing 500 of 1665 characters. View Entire Change Record OR cpe:2.3:a:digium:asterisk:14.0::::::: cpe:2.3:a:digium:asterisk:14.0.0::::::: cpe:2.3:a:digium:asterisk:14.0.0:beta1::::::* cpe:2.3:a:digium:asterisk:14.0.0:beta2::::::* cpe:2.3:a:digium:asterisk:14.0.0:rc1::::::* cpe:2.3:a:digium:asterisk:14.0.0:rc2::::::* cpe:2.3:a:digium:asterisk:14.0.1::::::: cpe:2.3:a:digium:asterisk:14.0.2::::::: cpe:2.3:a:digium:asterisk:14.01::::::: *cpe:2
Added	CPE Configuration		Record truncated, showing 500 of 1392 characters. View Entire Change Record OR cpe:2.3:a:digium:certified_asterisk:11.6:cert1::::::* cpe:2.3:a:digium:certified_asterisk:11.6:cert1::::::* cpe:2.3:a:digium:certified_asterisk:11.6:cert10::::::* cpe:2.3:a:digium:certified_asterisk:11.6:cert11::::::* cpe:2.3:a:digium:certified_asterisk:11.6:cert12::::::* cpe:2.3:a:digium:certified_asterisk:11.6:cert13::::::* cpe:2.3:a:digium:certified_asterisk:11.6:cert14::::::* *cpe:2.3:a:digium:certified_aste
Added	CPE Configuration		Record truncated, showing 500 of 546 characters. View Entire Change Record OR cpe:2.3:a:digium:certified_asterisk:13.13:cert1::::::* cpe:2.3:a:digium:certified_asterisk:13.13:cert1_rc1::::::* cpe:2.3:a:digium:certified_asterisk:13.13:cert1_rc2::::::* cpe:2.3:a:digium:certified_asterisk:13.13:cert1_rc3::::::* cpe:2.3:a:digium:certified_asterisk:13.13:cert1_rc4::::::* cpe:2.3:a:digium:certified_asterisk:13.13:cert2::::::* cpe:2.3:a:digium:certified_asterisk:13.13:cert3::::::* *cpe:2.3:a:dig
Added	CVSS V2		(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Added	CVSS V3		AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Added	CWE		CWE-200
Changed	Reference Type	http://downloads.asterisk.org/pub/security/AST-2017-005.html No Types Assigned	http://downloads.asterisk.org/pub/security/AST-2017-005.html Vendor Advisory
Changed	Reference Type	http://www.securitytracker.com/id/1039251 No Types Assigned	http://www.securitytracker.com/id/1039251 Third Party Advisory, VDB Entry
Changed	Reference Type	https://bugs.debian.org/873907 No Types Assigned	https://bugs.debian.org/873907 Issue Tracking, Patch, Third Party Advisory
Changed	Reference Type	https://issues.asterisk.org/jira/browse/ASTERISK-27013 No Types Assigned	https://issues.asterisk.org/jira/browse/ASTERISK-27013 Issue Tracking, Patch, Third Party Advisory
Changed	Reference Type	https://rtpbleed.com No Types Assigned	https://rtpbleed.com Third Party Advisory

Quick Info

CVE Dictionary Entry:
CVE-2017-14099
NVD Published Date:
09/02/2017
NVD Last Modified:
11/03/2017

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-14099 Detail

Current Description

Analysis Description

Impact

References to Advisories, Solutions, and Tools

Technical Details

Vulnerable software and versions Switch to CPE 2.2

Change History

CVE Modified by MITRE - 11/3/2017 9:29:35 PM

CVE Modified by MITRE - 10/30/2017 9:29:03 PM

Initial Analysis - 9/20/2017 3:25:33 PM

CVE Modified by MITRE - 9/3/2017 9:29:00 PM

Quick Info