CVE-2023-37457 (GCVE-0-2023-37457)

Vulnerability from cvelistv5 – Published: 2023-12-14 19:43 – Updated: 2025-02-13 17:01
VLAI?
Title
Asterisk's PJSIP_HEADER dialplan function can overwrite memory/cause crash when using 'update'
Summary
Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk versions 18.20.0 and prior, 20.5.0 and prior, and 21.0.0; as well as ceritifed-asterisk 18.9-cert5 and prior, the 'update' functionality of the PJSIP_HEADER dialplan function can exceed the available buffer space for storing the new value of a header. By doing so this can overwrite memory or cause a crash. This is not externally exploitable, unless dialplan is explicitly written to update a header based on data from an outside source. If the 'update' functionality is not used the vulnerability does not occur. A patch is available at commit a1ca0268254374b515fa5992f01340f7717113fa.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
Impacted products
Vendor Product Version
asterisk asterisk Affected: <= 18.20.0
Affected: >= 19.0.0, <= 20.5.0
Affected: = 21.0.0
Affected: <= 18.9-cert5
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          "dateUpdated": "2024-08-02T17:16:30.273Z",
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            "tags": [
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            "url": "https://lists.debian.org/debian-lts-announce/2023/12/msg00019.html"
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2023-12-29T00:06:20.393Z",
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      "source": {
        "advisory": "GHSA-98rc-4j27-74hh",
        "discovery": "UNKNOWN"
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      "title": "Asterisk\u0027s PJSIP_HEADER dialplan function can overwrite memory/cause crash when using \u0027update\u0027"
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  "cveMetadata": {
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    "cveId": "CVE-2023-37457",
    "datePublished": "2023-12-14T19:43:30.945Z",
    "dateReserved": "2023-07-06T13:01:36.996Z",
    "dateUpdated": "2025-02-13T17:01:26.636Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.1"
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.