CVE-2019-18790

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 22-11-2019 06:15

Last modified: - 13-05-2022 10:56

Total changes: - 6

Description

An issue was discovered in channels/chan_sip.c in Sangoma Asterisk 13.x before 13.29.2, 16.x before 16.6.2, and 17.x before 17.0.1, and Certified Asterisk 13.21 before cert5. A SIP request can be sent to Asterisk that can change a SIP peer's IP address. A REGISTER does not need to occur, and calls can be hijacked as a result. The only thing that needs to be known is the peer's name; authentication details such as passwords do not need to be known. This vulnerability is only exploitable when the nat option is set to the default, or auto_force_rport.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Low

Attack complexity

Network

Attack vector

None

Availability

Low

Confidentiality

Low

Integrity

None

Privileges required

Unchanged

Scope

None

User interaction

6.5

Base score

3.9

2.5

Exploitability score

Impact score

Verification logic

vendor=digium AND product=certified_asterisk AND version=13.21.0 AND update=cert4

vendor=digium AND product=certified_asterisk AND version=13.21.0 AND update=cert3

vendor=digium AND product=certified_asterisk AND version=13.21.0 AND update=cert2

vendor=digium AND product=certified_asterisk AND version=13.21.0 AND update=cert1

vendor=digium AND product=certified_asterisk AND version=13.21.0 AND update=rc1

vendor=digium AND product=asterisk AND versionStartIncluding=13.0.0 AND versionEndExcluding=13.29.2

vendor=digium AND product=asterisk AND versionStartIncluding=16.0.0 AND versionEndExcluding=16.6.2

vendor=digium AND product=asterisk AND versionStartIncluding=17.0.0 AND versionEndExcluding=17.0.1

vendor=digium AND product=certified_asterisk AND version=13.21.0

vendor=Debian AND product=debian_linux AND version=8.0

vendor=Debian AND product=debian_linux AND version=9.0

Reference

https://www.asterisk.org/downloads/security-advisories
http://downloads.asterisk.org/pub/security/AST-2019-006.html
[debian-lts-announce] 20191130 [SECURITY] [DLA 2017-1] asterisk security update-Mailing List, Third Party Advisory
[debian-lts-announce] 20220403 [SECURITY] [DLA 2969-1] asterisk security update-Mailing List, Third Party Advisory

Keywords

CVE-2019-18790

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2019-18790

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures