Executive Summary

Name CVE-2017-14099 First vendor Publication 2017-09-02
Vendor Cve Last vendor Modification 2017-11-04

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact None Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14099

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-200 Information Exposure

CPE : Common Platform Enumeration

Application 161
Application 28

Nessus® Vulnerability Scanner

Date Description
2017-10-30 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201710-29.nasl - Type : ACT_GATHER_INFO
2017-10-20 Name : A telephony application running on the remote host is affected by an informat...
File : asterisk_ast_2017_008.nasl - Type : ACT_GATHER_INFO
2017-09-20 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_c2ea3b319d7511e7bb13001999f8d30b.nasl - Type : ACT_GATHER_INFO
2017-09-05 Name : A telephony application running on the remote host is affected by multiple vu...
File : asterisk_ast_2017_005-007.nasl - Type : ACT_GATHER_INFO
2017-09-05 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3964.nasl - Type : ACT_GATHER_INFO
2017-09-05 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_c599f95c8ee511e78be8001999f8d30b.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
CONFIRM http://downloads.asterisk.org/pub/security/AST-2017-005.html
DEBIAN http://www.debian.org/security/2017/dsa-3964
GENTOO https://security.gentoo.org/glsa/201710-29
MISC https://rtpbleed.com
SECTRACK http://www.securitytracker.com/id/1039251

Alert History

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Date Informations
2020-05-23 00:56:01
  • Multiple Updates
2017-11-09 01:00:36
  • Multiple Updates
2017-11-04 09:23:48
  • Multiple Updates
2017-10-31 13:25:29
  • Multiple Updates
2017-10-31 09:22:06
  • Multiple Updates
2017-10-21 13:25:07
  • Multiple Updates
2017-09-21 13:25:07
  • Multiple Updates
2017-09-21 00:25:11
  • Multiple Updates
2017-09-06 13:25:19
  • Multiple Updates
2017-09-04 09:23:50
  • Multiple Updates
2017-09-02 21:24:38
  • First insertion