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GitHub_MCVE-2021-37624

HistoryOct 25, 2021 - 4:15 p.m.

CVE-2021-37624

2021-10-2516:15:08

CWE-306

CWE-287

GitHub_M

web.nvd.nist.gov

freeswitch

sip

authentication

message spoofing

security vulnerability

patch

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.002

Percentile

57.2%

JSON

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.10.7, FreeSWITCH does not authenticate SIP MESSAGE requests, leading to spam and message spoofing. By default, SIP requests of the type MESSAGE (RFC 3428) are not authenticated in the affected versions of FreeSWITCH. MESSAGE requests are relayed to SIP user agents registered with the FreeSWITCH server without requiring any authentication. Although this behaviour can be changed by setting the auth-messages parameter to true, it is not the default setting. Abuse of this security issue allows attackers to send SIP MESSAGE messages to any SIP user agent that is registered with the server without requiring authentication. Additionally, since no authentication is required, chat messages can be spoofed to appear to come from trusted entities. Therefore, abuse can lead to spam and enable social engineering, phishing and similar attacks. This issue is patched in version 1.10.7. Maintainers recommend that this SIP message type is authenticated by default so that FreeSWITCH administrators do not need to be explicitly set the auth-messages parameter. When following such a recommendation, a new parameter can be introduced to explicitly disable authentication.

Affected configurations

Nvd

Vulners

Node

freeswitchfreeswitchRange<1.10.7

VendorProductVersionCPE
freeswitchfreeswitch*cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
freeswitch	freeswitch	*	cpe:2.3:a:freeswitch:freeswitch::::::::

CNA Affected

[
  {
    "product": "freeswitch",
    "vendor": "signalwire",
    "versions": [
      {
        "status": "affected",
        "version": "< 1.10.7"
      }
    ]
  }
]