{ "document": { "aggregate_severity": { "text": "Moderate" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" }, { "category": "details", "text": "CVE-2023-45802: fix deferred memory reclaim of reset HTTP/2 streams", "title": "Details" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1778873714", "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1778873714" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/advisories/2026/clsa-2026_1778873714.json" } ], "tracking": { "current_release_date": "2026-05-15T19:35:47Z", "generator": { "date": "2026-05-15T19:35:47Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2026:1778873714", "initial_release_date": "2026-05-15T19:35:47Z", "revision_history": [ { "date": "2026-05-15T19:35:47Z", "number": "1", "summary": "Initial version" } ], "status": "final", "version": "1" }, "title": "mod_http2: Fix of CVE-2023-45802" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "AlmaLinux 9.2", "product": { "name": "AlmaLinux 9.2", "product_id": "AlmaLinux-9.2", "product_identification_helper": { "cpe": "cpe:2.3:o:almalinux:almalinux:9.2:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "AlmaLinux" } ], "category": "vendor", "name": "AlmaLinux OS Foundation" }, { "branches": [ { "branches": [ { "category": "product_version", "name": "mod_http2-0:1.15.19-4.el9.4.tuxcare.els3.x86_64", "product": { "name": "mod_http2-0:1.15.19-4.el9.4.tuxcare.els3.x86_64", "product_id": "mod_http2-0:1.15.19-4.el9.4.tuxcare.els3.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/mod_http2@1.15.19-4.el9.4.tuxcare.els3?arch=x86_64" } } }, { "category": "product_version", "name": "mod_http2-0:1.15.19-4.el9.4.tuxcare.els2.x86_64", "product": { "name": "mod_http2-0:1.15.19-4.el9.4.tuxcare.els2.x86_64", "product_id": "mod_http2-0:1.15.19-4.el9.4.tuxcare.els2.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/mod_http2@1.15.19-4.el9.4.tuxcare.els2?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "mod_http2-0:1.15.19-4.el9.4.tuxcare.els3.x86_64 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:mod_http2-0:1.15.19-4.el9.4.tuxcare.els3.x86_64" }, "product_reference": "mod_http2-0:1.15.19-4.el9.4.tuxcare.els3.x86_64", "relates_to_product_reference": "AlmaLinux-9.2" }, { "category": "default_component_of", "full_product_name": { "name": "mod_http2-0:1.15.19-4.el9.4.tuxcare.els2.x86_64 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:mod_http2-0:1.15.19-4.el9.4.tuxcare.els2.x86_64" }, "product_reference": "mod_http2-0:1.15.19-4.el9.4.tuxcare.els2.x86_64", "relates_to_product_reference": "AlmaLinux-9.2" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-45802", "cwe": { "id": "CWE-404", "name": "Improper Resource Shutdown or Release" }, "notes": [ { "category": "description", "text": "When a HTTP/2 stream was reset (RST frame) by a client, there was a time window were the request's memory resources were not reclaimed immediately. Instead, de-allocation was deferred to connection close. A client could send new requests and resets, keeping the connection busy and open and causing the memory footprint to keep on growing. On connection close, all resources were reclaimed, but the process might run out of memory before that.\n\nThis was found by the reporter during testing of CVE-2023-44487 (HTTP/2 Rapid Reset Exploit) with their own test client. During \"normal\" HTTP/2 use, the probability to hit this bug is very low. The kept memory would not become noticeable before the connection closes or times out.\n\nUsers are recommended to upgrade to version 2.4.58, which fixes the issue.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AlmaLinux-9.2:mod_http2-0:1.15.19-4.el9.4.tuxcare.els3.x86_64" ], "known_affected": [ "AlmaLinux-9.2:mod_http2-0:1.15.19-4.el9.4.tuxcare.els2.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-45802" }, { "category": "external", "summary": "https://httpd.apache.org/security/vulnerabilities_24.html", "url": "https://httpd.apache.org/security/vulnerabilities_24.html" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html", "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/" }, { "category": "external", "summary": "https://security.netapp.com/advisory/ntap-20231027-0011/", "url": "https://security.netapp.com/advisory/ntap-20231027-0011/" } ], "release_date": "2023-10-23T07:15:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-05-15T19:35:17.676953Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1778873714", "product_ids": [ "AlmaLinux-9.2:mod_http2-0:1.15.19-4.el9.4.tuxcare.els3.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1778873714" }, { "category": "none_available", "date": "2023-10-23T07:15:00Z", "details": "Affected", "product_ids": [ "AlmaLinux-9.2:mod_http2-0:1.15.19-4.el9.4.tuxcare.els2.x86_64" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "AlmaLinux-9.2:mod_http2-0:1.15.19-4.el9.4.tuxcare.els3.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ] } ] }