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.
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Affected Vendors & Products
References
History
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2023-09-15T19:34:32.429Z
Updated: 2024-08-02T18:24:54.547Z
Reserved: 2023-08-08T13:46:25.242Z
Link: CVE-2023-40019
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2023-09-15T20:15:09.637
Modified: 2023-09-21T18:04:04.783
Link: CVE-2023-40019
Redhat
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