{"id":"CVE-2023-7256","state":"PUBLISHED","title":"Double-free in libpcap before 1.10.5 with remote packet capture support.","description":"In affected libpcap versions during the setup of a remote packet capture the internal function sock_initaddress() calls getaddrinfo() and possibly freeaddrinfo(), but does not clearly indicate to the caller function whether freeaddrinfo() still remains to be called after the function returns.  This makes it possible in some scenarios that both the function and its caller call freeaddrinfo() for the same allocated memory block.  A similar problem was reported in Apple libpcap, to which Apple assigned CVE-2023-40400.","publishedAt":"2024-08-30T23:44:04.383Z","updatedAt":"2024-09-03T20:07:34.599Z","severity":{"score":4.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","source":"Tcpdump"},"assigner":"Tcpdump","products":["The Tcpdump Group libpcap"],"affected":[{"vendor":"The Tcpdump Group","product":"libpcap","defaultStatus":"unaffected","versions":[{"version":"1.8.x","status":"affected"},{"version":"1.9.x","status":"affected"},{"version":"1.10.x","status":"affected","lessThanOrEqual":"1.10.4","versionType":"semver"}],"modules":["remote packet capture"],"repo":"https://github.com/the-tcpdump-group/libpcap/"}],"references":["https://github.com/the-tcpdump-group/libpcap/commit/262e4f34979872d822ccedf9f318ed89c4d31c03","https://github.com/the-tcpdump-group/libpcap/commit/2aa69b04d8173b18a0e3492e0c8f2f7fabdf642d"],"weaknesses":["CWE-415"],"ingestedAt":"2026-10-29T20:06:42.242Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/7xxx/CVE-2023-7256.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-7256","state":"PUBLISHED","datePublished":"2024-08-30T23:44:04.383Z","dateUpdated":"2024-09-03T20:07:34.599Z","assignerShortName":"Tcpdump","assignerOrgId":"cfdbb673-b408-4d03-89c1-c3d73ed80896","dateReserved":"2024-04-11T15:02:51.577Z"},"containers":{"cna":{"title":"Double-free in libpcap before 1.10.5 with remote packet capture support.","descriptions":[{"lang":"en","value":"In affected libpcap versions during the setup of a remote packet capture the internal function sock_initaddress() calls getaddrinfo() and possibly freeaddrinfo(), but does not clearly indicate to the caller function whether freeaddrinfo() still remains to be called after the function returns.  This makes it possible in some scenarios that both the function and its caller call freeaddrinfo() for the same allocated memory block.  A similar problem was reported in Apple libpcap, to which Apple assigned CVE-2023-40400."}],"affected":[{"vendor":"The Tcpdump Group","product":"libpcap","defaultStatus":"unaffected","versions":[{"version":"1.8.x","status":"affected"},{"version":"1.9.x","status":"affected"},{"version":"1.10.x","status":"affected","lessThanOrEqual":"1.10.4","versionType":"semver"}],"modules":["remote packet capture"],"repo":"https://github.com/the-tcpdump-group/libpcap/"}],"references":[{"url":"https://github.com/the-tcpdump-group/libpcap/commit/262e4f34979872d822ccedf9f318ed89c4d31c03","tags":["patch"]},{"url":"https://github.com/the-tcpdump-group/libpcap/commit/2aa69b04d8173b18a0e3492e0c8f2f7fabdf642d","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"MEDIUM","baseScore":4.4,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-415","description":"CWE-415 Double Free","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Tcpdump","orgId":"cfdbb673-b408-4d03-89c1-c3d73ed80896","dateUpdated":"2024-08-30T23:44:04.383Z"},"configurations":[{"lang":"en","value":"The problem is specific to the remote packet capture code, which is not enabled in the default build configuration."}],"credits":[{"lang":"en","type":"reporter","value":"Dora Sweet"}],"exploits":[{"lang":"en","value":"A functional exploit exists."}],"solutions":[{"lang":"en","value":"Upgrade to libpcap 1.10.5."}],"source":{"discovery":"EXTERNAL"},"workarounds":[{"lang":"en","value":"Do not build libpcap with remote packet capture support."}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-09-03T20:03:11.759531Z","id":"CVE-2023-7256","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-03T20:07:34.599Z"}}]}}}