{"id":"CVE-2023-23916","state":"PUBLISHED","title":"An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the \"chained\" HTTP compression algorithms, meaning that a server response can","description":"An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the \"chained\" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable \"links\" in this \"decompression chain\" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a \"malloc bomb\", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors.","publishedAt":"2023-02-23T00:00:00.000Z","updatedAt":"2026-10-14T22:32:01.283Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"hackerone","products":["n/a https://github.com/curl/curl"],"affected":[{"vendor":"n/a","product":"https://github.com/curl/curl","versions":[{"version":"Fixed in 7.88.0","status":"affected"}]}],"references":["https://hackerone.com/reports/1826048","https://lists.debian.org/debian-lts-announce/2023/02/msg00035.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQKE6TXYDHOTFHLTBZ5X73GTKI7II5KO/","https://www.debian.org/security/2023/dsa-5365","https://security.netapp.com/advisory/ntap-20230309-0006/","https://security.gentoo.org/glsa/202310-12","https://cert-portal.siemens.com/productcert/html/ssa-398330.html"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:05:43.909Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/23xxx/CVE-2023-23916.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-23916","state":"PUBLISHED","datePublished":"2023-02-23T00:00:00.000Z","dateUpdated":"2026-10-14T22:32:01.283Z","assignerShortName":"hackerone","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateReserved":"2023-01-19T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the \"chained\" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable \"links\" in this \"decompression chain\" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a \"malloc bomb\", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors."}],"affected":[{"vendor":"n/a","product":"https://github.com/curl/curl","versions":[{"version":"Fixed in 7.88.0","status":"affected"}]}],"references":[{"url":"https://hackerone.com/reports/1826048"},{"url":"https://lists.debian.org/debian-lts-announce/2023/02/msg00035.html","name":"[debian-lts-announce] 20230224 [SECURITY] [DLA 3341-1] curl security update","tags":["mailing-list"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQKE6TXYDHOTFHLTBZ5X73GTKI7II5KO/","name":"FEDORA-2023-94df30cbec","tags":["vendor-advisory"]},{"url":"https://www.debian.org/security/2023/dsa-5365","name":"DSA-5365","tags":["vendor-advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20230309-0006/"},{"url":"https://security.gentoo.org/glsa/202310-12","name":"GLSA-202310-12","tags":["vendor-advisory"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","type":"CWE","lang":"en","description":"Allocation of Resources Without Limits or Throttling (CWE-770)"}]}],"providerMetadata":{"shortName":"hackerone","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateUpdated":"2023-10-11T10:06:40.617Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://hackerone.com/reports/1826048","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/02/msg00035.html","name":"[debian-lts-announce] 20230224 [SECURITY] [DLA 3341-1] curl security update","tags":["mailing-list","x_transferred"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQKE6TXYDHOTFHLTBZ5X73GTKI7II5KO/","name":"FEDORA-2023-94df30cbec","tags":["vendor-advisory","x_transferred"]},{"url":"https://www.debian.org/security/2023/dsa-5365","name":"DSA-5365","tags":["vendor-advisory","x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20230309-0006/","tags":["x_transferred"]},{"url":"https://security.gentoo.org/glsa/202310-12","name":"GLSA-202310-12","tags":["vendor-advisory","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T10:42:26.847Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-03-12T18:24:35.695221Z","id":"CVE-2023-23916","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","type":"CWE","lang":"en","description":"CWE-770 Allocation of Resources Without Limits or Throttling"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-03-12T18:25:23.845Z"}},{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-10-14T22:32:01.283Z"},"x_adpType":"supplier"}]}}}