{"id":"CVE-2024-45819","state":"PUBLISHED","title":"libxl leaks data to PVH guests via ACPI tables","description":"PVH guests have their ACPI tables constructed by the toolstack.  The\nconstruction involves building the tables in local memory, which are\nthen copied into guest memory.  While actually used parts of the local\nmemory are filled in correctly, excess space that is being allocated is\nleft with its prior contents.","publishedAt":"2024-12-19T12:00:50.271Z","updatedAt":"2024-12-31T18:57:41.513Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","source":"CISA-ADP"},"assigner":"XEN","products":["Xen Xen"],"affected":[{"vendor":"Xen","product":"Xen","defaultStatus":"unknown","versions":[{"version":"consult Xen advisory XSA-464","status":"unknown"}]}],"references":["https://xenbits.xenproject.org/xsa/advisory-464.html","http://www.openwall.com/lists/oss-security/2024/11/12/1","http://xenbits.xen.org/xsa/advisory-464.html","http://www.openwall.com/lists/oss-security/2024/11/12/10","http://www.openwall.com/lists/oss-security/2024/11/12/7"],"weaknesses":["CWE-276"],"ingestedAt":"2026-10-29T20:07:47.831Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/45xxx/CVE-2024-45819.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-45819","state":"PUBLISHED","datePublished":"2024-12-19T12:00:50.271Z","dateUpdated":"2024-12-31T18:57:41.513Z","assignerShortName":"XEN","assignerOrgId":"23aa2041-22e1-471f-9209-9b7396fa234f","dateReserved":"2024-09-09T14:43:11.826Z"},"containers":{"cna":{"title":"libxl leaks data to PVH guests via ACPI tables","descriptions":[{"lang":"en","value":"PVH guests have their ACPI tables constructed by the toolstack.  The\nconstruction involves building the tables in local memory, which are\nthen copied into guest memory.  While actually used parts of the local\nmemory are filled in correctly, excess space that is being allocated is\nleft with its prior contents."}],"affected":[{"vendor":"Xen","product":"Xen","defaultStatus":"unknown","versions":[{"version":"consult Xen advisory XSA-464","status":"unknown"}]}],"references":[{"url":"https://xenbits.xenproject.org/xsa/advisory-464.html"}],"providerMetadata":{"shortName":"XEN","orgId":"23aa2041-22e1-471f-9209-9b7396fa234f","dateUpdated":"2024-12-19T12:00:50.271Z"},"datePublic":"2024-11-12T12:00:00.000Z","impacts":[{"descriptions":[{"lang":"en","value":"An unprivileged guest may be able to access sensitive information\npertaining to the host, control domain, or other guests."}]}],"configurations":[{"lang":"en","value":"Xen versions 4.8 and onwards are vulnerable.  Xen 4.7 and older are not\nvulnerable.\n\nOnly x86 systems running PVH guests are vulnerable.  Architectures other\nthan x86 are not vulnerable.\n\nOnly PVH guests can leverage the vulnerability.  HVM and PV guests\ncannot leverage the vulnerability.  Note that PV guests when run inside\nthe (PVH) shim can't leverage the vulnerability."}],"workarounds":[{"lang":"en","value":"Running only PV or HVM guests will avoid this vulnerability."}],"credits":[{"lang":"en","type":"finder","value":"This issue was discovered by Jason Andryuk of AMD."}]},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2024/11/12/1"},{"url":"http://xenbits.xen.org/xsa/advisory-464.html"},{"url":"http://www.openwall.com/lists/oss-security/2024/11/12/10"},{"url":"http://www.openwall.com/lists/oss-security/2024/11/12/7"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-12-19T12:04:50.065Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-12-31T18:56:31.915960Z","id":"CVE-2024-45819","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-276","type":"CWE","lang":"en","description":"CWE-276 Incorrect Default Permissions"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-12-31T18:57:41.513Z"}}]}}}