CVE-2026-14461

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "mtr", "programFiles": ["ui/asn.c"], "programRoutines": [{"name": "ipinfo_lookup()"}], "repo": "https://github.com/traviscross/mtr/", "vendor": "BitWizard", "versions": [{"lessThanOrEqual": "0.96", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "cvd@cert.pl"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "mtr is vulnerable to Out-of-bound read vulnerability in ipinfo_lookup() function. An attacker who can influence the TXT response used for AS lookups can trigger this bug by returning a DNS response that is larger than 512 bytes and uses a crafted compression pointer in the answer NAME field.\u00a0ipinfo_lookup() function uses the length of the response as the\u00a0end-of-message boundary for dn_expand() function.\u00a0The result is a reliable crash.\n\n\nThis issue exists in the mtr through version 0.96 and it was fixed in commit\u00a048e1794414d338ce47abc0f27c25ade8788af9c3."}, {"lang": "es", "value": "mtr es vulnerable a una vulnerabilidad de lectura fuera de l\u00edmites en la funci\u00f3n ipinfo_lookup(). Un atacante que puede influir en la respuesta TXT utilizada para b\u00fasquedas de AS puede activar este error al devolver una respuesta DNS que es mayor de 512 bytes y utiliza un puntero de compresi\u00f3n manipulado en el campo NAME de la respuesta. La funci\u00f3n ipinfo_lookup() utiliza la longitud de la respuesta como el l\u00edmite de fin de mensaje para la funci\u00f3n dn_expand(). El resultado es un fallo fiable.\n\nEste problema existe en mtr hasta la versi\u00f3n 0.96 y fue corregido en el commit 48e1794414d338ce47abc0f27c25ade8788af9c3."}], "id": "CVE-2026-14461", "lastModified": "2026-10-24T23:10:00.160", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.1, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cvd@cert.pl", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-14461", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-10T13:14:45.489929Z", "version": "2.0.3"}}]}, "published": "2026-07-10T11:16:32.823", "references": [{"source": "cvd@cert.pl", "url": "https://cert.pl/en/posts/2026/07/CVE-2026-14461"}, {"source": "cvd@cert.pl", "url": "https://github.com/traviscross/mtr/commit/48e1794414d338ce47abc0f27c25ade8788af9c3"}], "sourceIdentifier": "cvd@cert.pl", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "cvd@cert.pl", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank Micha\u0142 Majchrowicz and Marcin Wyczechowski (AFINE Team) for reporting this issue.", "bugzilla": {"description": "mtr: mtr: Denial of Service via crafted DNS responses", "id": "2498972", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2498972"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-823", "details": ["A flaw was found in mtr. A remote attacker, by influencing the DNS (Domain Name System) TXT response used for AS (Autonomous System) lookups, can trigger an out-of-bound read vulnerability in the `ipinfo_lookup()` function. This occurs when a DNS response larger than 512 bytes contains a crafted compression pointer in the answer NAME field. Successful exploitation leads to a reliable crash of the mtr application, resulting in a Denial of Service."], "name": "CVE-2026-14461", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "mtr", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "mtr", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "mtr", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "mtr", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "mtr", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-10T10:38:28Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-14461\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-14461\nhttps://cert.pl/en/posts/2026/07/CVE-2026-14461\nhttps://github.com/traviscross/mtr/commit/48e1794414d338ce47abc0f27c25ade8788af9c3"], "threat_severity": "Moderate"}

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