CVE-2021-41991 (GCVE-0-2021-41991)
Vulnerability from cvelistv5
Published
2021-10-18 13:44
Modified
2024-08-04 03:22
Severity ?
Summary
The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.
References
cve@mitre.orghttps://cert-portal.siemens.com/productcert/pdf/ssa-539476.pdfPatch, Third Party Advisory
cve@mitre.orghttps://github.com/strongswan/strongswan/releases/tag/5.9.4Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/10/msg00014.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FJSATD2R2XHTG4P63GCMQ2N7EWKMME5/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WQSQ3BEC22NF4NCDZVCT4P3Q2ZIAJXGJ/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3TQ32JLJOBJDB2EJKSX2PBPB5NFG2D4/
cve@mitre.orghttps://www.debian.org/security/2021/dsa-4989Third Party Advisory
cve@mitre.orghttps://www.strongswan.org/blog/2021/10/18/strongswan-vulnerability-%28cve-2021-41991%29.html
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-539476.pdfPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/strongswan/strongswan/releases/tag/5.9.4Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/10/msg00014.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FJSATD2R2XHTG4P63GCMQ2N7EWKMME5/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WQSQ3BEC22NF4NCDZVCT4P3Q2ZIAJXGJ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3TQ32JLJOBJDB2EJKSX2PBPB5NFG2D4/
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4989Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.strongswan.org/blog/2021/10/18/strongswan-vulnerability-%28cve-2021-41991%29.html
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

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         descriptions: "[{\"lang\": \"en\", \"value\": \"The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.\"}, {\"lang\": \"es\", \"value\": \"La cach\\u00e9 de certificados en memoria en strongSwan versiones anteriores a 5.9.4, presenta un desbordamiento de enteros remoto al recibir muchas peticiones con diferentes certificados para llenar la cach\\u00e9 y posteriormente desencadenar la sustituci\\u00f3n de las entradas de la cach\\u00e9. El c\\u00f3digo intenta seleccionar una entrada de cach\\u00e9 menos usada mediante un generador de n\\u00fameros aleatorios, pero esto no es realizado correctamente. Una ejecuci\\u00f3n de c\\u00f3digo remota  podr\\u00eda ser una peque\\u00f1a posibilidad\"}]",
         id: "CVE-2021-41991",
         lastModified: "2024-11-21T06:27:02.090",
         metrics: "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 3.6}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:N/I:N/A:P\", \"baseScore\": 5.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 10.0, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
         published: "2021-10-18T14:15:10.333",
         references: "[{\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-539476.pdf\", \"source\": \"cve@mitre.org\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/strongswan/strongswan/releases/tag/5.9.4\", \"source\": \"cve@mitre.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2021/10/msg00014.html\", \"source\": \"cve@mitre.org\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FJSATD2R2XHTG4P63GCMQ2N7EWKMME5/\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WQSQ3BEC22NF4NCDZVCT4P3Q2ZIAJXGJ/\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3TQ32JLJOBJDB2EJKSX2PBPB5NFG2D4/\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://www.debian.org/security/2021/dsa-4989\", \"source\": \"cve@mitre.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.strongswan.org/blog/2021/10/18/strongswan-vulnerability-%28cve-2021-41991%29.html\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-539476.pdf\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/strongswan/strongswan/releases/tag/5.9.4\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2021/10/msg00014.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FJSATD2R2XHTG4P63GCMQ2N7EWKMME5/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WQSQ3BEC22NF4NCDZVCT4P3Q2ZIAJXGJ/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3TQ32JLJOBJDB2EJKSX2PBPB5NFG2D4/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://www.debian.org/security/2021/dsa-4989\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.strongswan.org/blog/2021/10/18/strongswan-vulnerability-%28cve-2021-41991%29.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
         sourceIdentifier: "cve@mitre.org",
         vulnStatus: "Modified",
         weaknesses: "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-190\"}]}]",
      },
      nvd: "{\"cve\":{\"id\":\"CVE-2021-41991\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-10-18T14:15:10.333\",\"lastModified\":\"2024-11-21T06:27:02.090\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.\"},{\"lang\":\"es\",\"value\":\"La caché de certificados en memoria en strongSwan versiones anteriores a 5.9.4, presenta un desbordamiento de enteros remoto al recibir muchas peticiones con diferentes certificados para llenar la caché y posteriormente desencadenar la sustitución de las entradas de la caché. El código intenta seleccionar una entrada de caché menos usada mediante un generador de números aleatorios, pero esto no es realizado correctamente. Una ejecución de código remota  podría ser una pequeña 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   },
}


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