cve-2024-42491
Vulnerability from cvelistv5
Published
2024-09-05 17:17
Modified
2024-09-05 18:52
Severity ?
5.7 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Summary
Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.24.3, 20.9.3, and 21.4.3 of Asterisk and versions 18.9-cert12 and 20.7-cert2 of certified-asterisk, if Asterisk attempts to send a SIP request to a URI whose host portion starts with `.1` or `[.1]`, and res_resolver_unbound is loaded, Asterisk will crash with a SEGV. To receive a patch, users should upgrade to one of the following versions: 18.24.3, 20.9.3, 21.4.3, certified-18.9-cert12, certified-20.7-cert2. Two workarounds are available. Disable res_resolver_unbound by setting `noload = res_resolver_unbound.so` in modules.conf, or set `rewrite_contact = yes` on all PJSIP endpoints. NOTE: This may not be appropriate for all Asterisk configurations.
References
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/50bf8d4d3064930d28ecf1ce3397b14574d514d2
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/a15050650abf09c10a3c135fab148220cd41d3a0
security-advisories@github.comhttps://github.com/asterisk/asterisk/security/advisories/GHSA-v428-g3cw-7hv9
Impacted products
Vendor Product Version
asterisk asterisk Version: < 18.24.3
Version: >= 19.0.0, < 20.9.3
Version: >= 21.0.0, < 21.4.3
Version: < 18.9-cert12
Version: >= 19.0, < 20.7-cert2
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
   containers: {
      adp: [
         {
            metrics: [
               {
                  other: {
                     content: {
                        id: "CVE-2024-42491",
                        options: [
                           {
                              Exploitation: "none",
                           },
                           {
                              Automatable: "no",
                           },
                           {
                              "Technical Impact": "partial",
                           },
                        ],
                        role: "CISA Coordinator",
                        timestamp: "2024-09-05T18:48:24.364960Z",
                        version: "2.0.3",
                     },
                     type: "ssvc",
                  },
               },
            ],
            providerMetadata: {
               dateUpdated: "2024-09-05T18:52:42.844Z",
               orgId: "134c704f-9b21-4f2e-91b3-4a467353bcc0",
               shortName: "CISA-ADP",
            },
            title: "CISA ADP Vulnrichment",
         },
      ],
      cna: {
         affected: [
            {
               product: "asterisk",
               vendor: "asterisk",
               versions: [
                  {
                     status: "affected",
                     version: "< 18.24.3",
                  },
                  {
                     status: "affected",
                     version: ">= 19.0.0, < 20.9.3",
                  },
                  {
                     status: "affected",
                     version: ">= 21.0.0, < 21.4.3",
                  },
                  {
                     status: "affected",
                     version: "< 18.9-cert12",
                  },
                  {
                     status: "affected",
                     version: ">= 19.0, < 20.7-cert2",
                  },
               ],
            },
         ],
         descriptions: [
            {
               lang: "en",
               value: "Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.24.3, 20.9.3, and 21.4.3 of Asterisk and versions 18.9-cert12 and 20.7-cert2 of certified-asterisk, if Asterisk attempts to send a SIP request to a URI whose host portion starts with `.1` or `[.1]`, and res_resolver_unbound is loaded, Asterisk will crash with a SEGV. To receive a patch, users should upgrade to one of the following versions: 18.24.3, 20.9.3, 21.4.3, certified-18.9-cert12, certified-20.7-cert2. Two workarounds are available. Disable res_resolver_unbound by setting `noload = res_resolver_unbound.so` in modules.conf, or set `rewrite_contact = yes` on all PJSIP endpoints. NOTE: This may not be appropriate for all Asterisk configurations.",
            },
         ],
         metrics: [
            {
               cvssV3_1: {
                  attackComplexity: "LOW",
                  attackVector: "NETWORK",
                  availabilityImpact: "HIGH",
                  baseScore: 5.7,
                  baseSeverity: "MEDIUM",
                  confidentialityImpact: "NONE",
                  integrityImpact: "NONE",
                  privilegesRequired: "LOW",
                  scope: "UNCHANGED",
                  userInteraction: "REQUIRED",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
                  version: "3.1",
               },
            },
         ],
         problemTypes: [
            {
               descriptions: [
                  {
                     cweId: "CWE-252",
                     description: "CWE-252: Unchecked Return Value",
                     lang: "en",
                     type: "CWE",
                  },
               ],
            },
            {
               descriptions: [
                  {
                     cweId: "CWE-476",
                     description: "CWE-476: NULL Pointer Dereference",
                     lang: "en",
                     type: "CWE",
                  },
               ],
            },
         ],
         providerMetadata: {
            dateUpdated: "2024-09-05T17:17:56.961Z",
            orgId: "a0819718-46f1-4df5-94e2-005712e83aaa",
            shortName: "GitHub_M",
         },
         references: [
            {
               name: "https://github.com/asterisk/asterisk/security/advisories/GHSA-v428-g3cw-7hv9",
               tags: [
                  "x_refsource_CONFIRM",
               ],
               url: "https://github.com/asterisk/asterisk/security/advisories/GHSA-v428-g3cw-7hv9",
            },
            {
               name: "https://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4",
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4",
            },
            {
               name: "https://github.com/asterisk/asterisk/commit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742",
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://github.com/asterisk/asterisk/commit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742",
            },
            {
               name: "https://github.com/asterisk/asterisk/commit/50bf8d4d3064930d28ecf1ce3397b14574d514d2",
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://github.com/asterisk/asterisk/commit/50bf8d4d3064930d28ecf1ce3397b14574d514d2",
            },
            {
               name: "https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8",
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8",
            },
            {
               name: "https://github.com/asterisk/asterisk/commit/a15050650abf09c10a3c135fab148220cd41d3a0",
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://github.com/asterisk/asterisk/commit/a15050650abf09c10a3c135fab148220cd41d3a0",
            },
         ],
         source: {
            advisory: "GHSA-v428-g3cw-7hv9",
            discovery: "UNKNOWN",
         },
         title: "A malformed Contact or Record-Route URI in an incoming SIP request can cause Asterisk to crash when res_resolver_unbound is used",
      },
   },
   cveMetadata: {
      assignerOrgId: "a0819718-46f1-4df5-94e2-005712e83aaa",
      assignerShortName: "GitHub_M",
      cveId: "CVE-2024-42491",
      datePublished: "2024-09-05T17:17:56.961Z",
      dateReserved: "2024-08-02T14:13:04.619Z",
      dateUpdated: "2024-09-05T18:52:42.844Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
   "vulnerability-lookup:meta": {
      nvd: "{\"cve\":{\"id\":\"CVE-2024-42491\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2024-09-05T18:15:05.707\",\"lastModified\":\"2024-09-06T12:08:21.290\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.24.3, 20.9.3, and 21.4.3 of Asterisk and versions 18.9-cert12 and 20.7-cert2 of certified-asterisk, if Asterisk attempts to send a SIP request to a URI whose host portion starts with `.1` or `[.1]`, and res_resolver_unbound is loaded, Asterisk will crash with a SEGV. To receive a patch, users should upgrade to one of the following versions: 18.24.3, 20.9.3, 21.4.3, certified-18.9-cert12, certified-20.7-cert2. Two workarounds are available. Disable res_resolver_unbound by setting `noload = res_resolver_unbound.so` in modules.conf, or set `rewrite_contact = yes` on all PJSIP endpoints. NOTE: This may not be appropriate for all Asterisk configurations.\"},{\"lang\":\"es\",\"value\":\"Asterisk es una centralita privada (PBX) de código abierto. En versiones anteriores a las 18.24.3, 20.9.3 y 21.4.3 de Asterisk y las versiones 18.9-cert12 y 20.7-cert2 de certificate-asterisk, si Asterisk intenta enviar una solicitud SIP a una URI cuya parte de host comienza con `.1` o `[.1]`, y res_resolver_unbound está cargado, Asterisk se bloqueará con un SEGV. Para recibir un parche, los usuarios deben actualizar a una de las siguientes versiones: 18.24.3, 20.9.3, 21.4.3, certificate-18.9-cert12, certificate-20.7-cert2. Hay dos workarounds disponibles. Deshabilite res_resolver_unbound configurando `noload = res_resolver_unbound.so` en modules.conf, o configure `rewrite_contact = yes` en todos los endpoints PJSIP. NOTA: Esto puede no ser apropiado para todas las configuraciones de Asterisk.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H\",\"baseScore\":5.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.1,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-252\"},{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"references\":[{\"url\":\"https://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/asterisk/asterisk/commit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/asterisk/asterisk/commit/50bf8d4d3064930d28ecf1ce3397b14574d514d2\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/asterisk/asterisk/commit/a15050650abf09c10a3c135fab148220cd41d3a0\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/asterisk/asterisk/security/advisories/GHSA-v428-g3cw-7hv9\",\"source\":\"security-advisories@github.com\"}]}}",
      vulnrichment: {
         containers: "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-42491\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-05T18:48:24.364960Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-05T18:52:38.660Z\"}}], \"cna\": {\"title\": \"A malformed Contact or Record-Route URI in an incoming SIP request can cause Asterisk to crash when res_resolver_unbound is used\", \"source\": {\"advisory\": \"GHSA-v428-g3cw-7hv9\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.7, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"asterisk\", \"product\": \"asterisk\", \"versions\": [{\"status\": \"affected\", \"version\": \"< 18.24.3\"}, {\"status\": \"affected\", \"version\": \">= 19.0.0, < 20.9.3\"}, {\"status\": \"affected\", \"version\": \">= 21.0.0, < 21.4.3\"}, {\"status\": \"affected\", \"version\": \"< 18.9-cert12\"}, {\"status\": \"affected\", \"version\": \">= 19.0, < 20.7-cert2\"}]}], \"references\": [{\"url\": \"https://github.com/asterisk/asterisk/security/advisories/GHSA-v428-g3cw-7hv9\", \"name\": \"https://github.com/asterisk/asterisk/security/advisories/GHSA-v428-g3cw-7hv9\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4\", \"name\": \"https://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/asterisk/asterisk/commit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742\", \"name\": \"https://github.com/asterisk/asterisk/commit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/asterisk/asterisk/commit/50bf8d4d3064930d28ecf1ce3397b14574d514d2\", \"name\": \"https://github.com/asterisk/asterisk/commit/50bf8d4d3064930d28ecf1ce3397b14574d514d2\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8\", \"name\": \"https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/asterisk/asterisk/commit/a15050650abf09c10a3c135fab148220cd41d3a0\", \"name\": \"https://github.com/asterisk/asterisk/commit/a15050650abf09c10a3c135fab148220cd41d3a0\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.24.3, 20.9.3, and 21.4.3 of Asterisk and versions 18.9-cert12 and 20.7-cert2 of certified-asterisk, if Asterisk attempts to send a SIP request to a URI whose host portion starts with `.1` or `[.1]`, and res_resolver_unbound is loaded, Asterisk will crash with a SEGV. To receive a patch, users should upgrade to one of the following versions: 18.24.3, 20.9.3, 21.4.3, certified-18.9-cert12, certified-20.7-cert2. Two workarounds are available. Disable res_resolver_unbound by setting `noload = res_resolver_unbound.so` in modules.conf, or set `rewrite_contact = yes` on all PJSIP endpoints. NOTE: This may not be appropriate for all Asterisk configurations.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-252\", \"description\": \"CWE-252: Unchecked Return Value\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476: NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2024-09-05T17:17:56.961Z\"}}}",
         cveMetadata: "{\"cveId\": \"CVE-2024-42491\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-09-05T18:52:42.844Z\", \"dateReserved\": \"2024-08-02T14:13:04.619Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2024-09-05T17:17:56.961Z\", \"assignerShortName\": \"GitHub_M\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


Log in or create an account to share your comment.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.