CVE-2008-1637

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*", "matchCriteriaId": "BFBA9267-A53C-4D1E-95BE-B69BA5C03DF3", "versionEndIncluding": "3.1.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "PowerDNS Recursor before 3.1.5 uses insufficient randomness to calculate (1) TRXID values and (2) UDP source port numbers, which makes it easier for remote attackers to poison a DNS cache, related to (a) algorithmic deficiencies in rand and random functions in external libraries, (b) use of a 32-bit seed value, and (c) choice of the time of day as the sole seeding information."}, {"lang": "es", "value": "PowerDNS Recursor anterior a 3.1.5 no emplea la suficiente aleatoriedad para calcular (1) los valores TRXID y (2) n\u00fameros de las fuentes de los puertos UDP; esto hace que sea m\u00e1s f\u00e1cil a los atacantes remotos envenenar una cach\u00e9 de DNS relacionada con (a) deficiencias algor\u00edtmicas en las funciones rand y random de librerias externas, (b) uso de una semilla de 32-bit, y (3) elecci\u00f3n del momento del d\u00eda como la \u00fanica semilla de informaci\u00f3n."}], "id": "CVE-2008-1637", "lastModified": "2026-06-16T22:52:08.737", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2008-04-02T17:44:00.000", "references": [{"source": "cve@mitre.org", "url": "http://doc.powerdns.com/changelog.html"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Patch"], "url": "http://doc.powerdns.com/powerdns-advisory-2008-01.html"}, {"source": "cve@mitre.org", "url": "http://lists.opensuse.org/opensuse-security-announce/2008-06/msg00001.html"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Vendor Advisory"], "url": "http://secunia.com/advisories/29584"}, {"source": "cve@mitre.org", "url": "http://secunia.com/advisories/29737"}, {"source": "cve@mitre.org", "url": "http://secunia.com/advisories/29764"}, {"source": "cve@mitre.org", "url": "http://secunia.com/advisories/29830"}, {"source": "cve@mitre.org", "url": "http://secunia.com/advisories/30581"}, {"source": "cve@mitre.org", "url": "http://security.gentoo.org/glsa/glsa-200804-22.xml"}, {"source": "cve@mitre.org", "url": "http://www.debian.org/security/2008/dsa-1544"}, 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"url": "https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00224.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-189"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "pdns-recursor: perdictable query ids", "id": "440247", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=440247"}, "csaw": false, "details": ["PowerDNS Recursor before 3.1.5 uses insufficient randomness to calculate (1) TRXID values and (2) UDP source port numbers, which makes it easier for remote attackers to poison a DNS cache, related to (a) algorithmic deficiencies in rand and random functions in external libraries, (b) use of a 32-bit seed value, and (c) choice of the time of day as the sole seeding information."], "name": "CVE-2008-1637", "public_date": "2008-03-31T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2008-1637"], "threat_severity": "Moderate"}

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