CVE-2023-37457
CVSS 3.1 Score 7.5 of 10 (high)
Details
Summary
CVE-2023-37457 is a high-severity vulnerability that affects Asterisk, an open-source private branch exchange and telephony toolkit. The vulnerability exists in versions 18.20.0 and prior, 20.5.0 and prior, and 21.0.0, as well as certified-asterisk 18.9-cert5 and prior. It occurs when the 'update' functionality of the PJSIP_HEADER dialplan function exceeds the available buffer space, leading to memory overwrites or crashes. The vulnerability is not externally exploitable unless the dialplan is explicitly written to update a header based on data from an outside source. A patch is available at commit a1ca0268254374b515fa5992f01340f7717113fa to remediate this issue.
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