CVE-2023-40019

2023-09-1520:15:09

CWE-770

[email protected]

web.nvd.nist.gov

freeswitch

cve-2023-40019

denial of service

re-invite

sdp

codec

vulnerability

patch

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

13.3%

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 1.10.10, FreeSWITCH allows authorized users to cause a denial of service attack by sending re-INVITE with SDP containing duplicate codec names. When a call in FreeSWITCH completes codec negotiation, the codec_string channel variable is set with the result of the negotiation. On a subsequent re-negotiation, if an SDP is offered that contains codecs with the same names but with different formats, there may be too many codec matches detected by FreeSWITCH leading to overflows of its internal arrays. By abusing this vulnerability, an attacker is able to corrupt stack of FreeSWITCH leading to an undefined behavior of the system or simply crash it. Version 1.10.10 contains a patch for this issue.

Affected configurations

Vulners

NVD

Node

signalwirefreeswitchRange<1.10.10

VendorProductVersionCPE
signalwirefreeswitch*cpe:2.3:a:signalwire:freeswitch:*:*:*:*:*:*:*:*

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

CNA Affected

[
  {
    "vendor": "signalwire",
    "product": "freeswitch",
    "versions": [
      {
        "version": "< 1.10.10",
        "status": "affected"
      }
    ]
  }
]