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{"id": "CVE-2021-4156", "vendorId": null, "type": "cve", "bulletinFamily": "NVD", "title": "CVE-2021-4156", "description": "An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws.", "published": "2022-03-23T20:15:00", "modified": "2022-06-28T23:15:00", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:P"}, "cvss2": {"cvssV2": {"version": "2.0", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P", "accessVector": "NETWORK", "accessComplexity": "MEDIUM", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.8}, "severity": "MEDIUM", "exploitabilityScore": 8.6, "impactScore": 4.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}, "cvss3": {"cvssV3": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.2}, "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-4156", "reporter": "secalert@redhat.com", "references": ["https://bugzilla.redhat.com/show_bug.cgi?id=2027690", "https://github.com/libsndfile/libsndfile/pull/732/commits/4c30646abf7834e406f7e2429c70bc254e18beab", "https://github.com/libsndfile/libsndfile/issues/731", "https://lists.debian.org/debian-lts-announce/2022/06/msg00020.html"], "cvelist": ["CVE-2021-4156"], "immutableFields": [], "lastseen": "2022-06-29T01:17:17", "viewCount": 40, "enchantments": {"backreferences": {"references": [{"type": "debiancve", "idList": ["DEBIANCVE:CVE-2021-4156"]}, {"type": "nessus", "idList": ["OPENSUSE-2022-0052-1.NASL", "SUSE_SU-2022-0034-1.NASL", "SUSE_SU-2022-0052-1.NASL", "SUSE_SU-2022-14872-1.NASL"]}, {"type": "redhatcve", "idList": ["RH:CVE-2021-4156"]}, {"type": "suse", "idList": ["OPENSUSE-SU-2022:0052-1"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2021-4156"]}]}, "score": {"value": 2.4, "vector": "NONE"}, "dependencies": {"references": [{"type": "debiancve", "idList": ["DEBIANCVE:CVE-2021-4156"]}, {"type": "nessus", "idList": ["OPENSUSE-2022-0052-1.NASL", "SUSE_SU-2022-0034-1.NASL", "SUSE_SU-2022-0052-1.NASL", "SUSE_SU-2022-0052-2.NASL", "SUSE_SU-2022-14872-1.NASL"]}, {"type": "redhatcve", "idList": ["RH:CVE-2021-4156"]}, {"type": "suse", "idList": ["OPENSUSE-SU-2022:0052-1", "OPENSUSE-SU-2022:0052-2"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2021-4156"]}], "rev": 4}, "twitter": {"counter": 3, "tweets": [{"link": "https://twitter.com/threatintelctr/status/1541930262703079427", "text": " NEW: CVE-2021-4156 An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an app... (click for more) Severity: HIGH https://t.co/UoAQn5PoE8", "author": "threatintelctr", "author_photo": "https://pbs.twimg.com/profile_images/904224973987840000/dMy1x9Ho_400x400.jpg"}, {"link": "https://twitter.com/LinInfoSec/status/1541964726787346432", "text": "Debian - CVE-2021-4156: https://t.co/pQIOTrBg4s", "author": "LinInfoSec", "author_photo": "https://pbs.twimg.com/profile_images/806629896705507328/nxrtXOrp_400x400.jpg"}]}, "vulnersScore": 2.4}, "_state": {"dependencies": 0, "score": 0, "twitter": 1656469787}, "_internal": {}, "cna_cvss": {"cna": null, "cvss": {}}, "cpe": ["cpe:/a:libsndfile_project:libsndfile:1.1.10"], "cpe23": ["cpe:2.3:a:libsndfile_project:libsndfile:1.1.10:*:*:*:*:*:*:*"], "cwe": ["CWE-125"], "affectedSoftware": [{"cpeName": "libsndfile_project:libsndfile", "version": "1.1.10", "operator": "eq", "name": "libsndfile project libsndfile"}], "affectedConfiguration": [], "cpeConfiguration": {"CVE_data_version": "4.0", "nodes": [{"operator": "OR", "children": [], "cpe_match": [{"vulnerable": true, "cpe23Uri": "cpe:2.3:a:libsndfile_project:libsndfile:1.1.10:*:*:*:*:*:*:*", "cpe_name": []}]}]}, "extraReferences": [{"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2027690", "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2027690", "refsource": "MISC", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"]}, {"url": "https://github.com/libsndfile/libsndfile/pull/732/commits/4c30646abf7834e406f7e2429c70bc254e18beab", "name": "https://github.com/libsndfile/libsndfile/pull/732/commits/4c30646abf7834e406f7e2429c70bc254e18beab", "refsource": "MISC", "tags": ["Patch", "Third Party Advisory"]}, {"url": "https://github.com/libsndfile/libsndfile/issues/731", "name": "https://github.com/libsndfile/libsndfile/issues/731", "refsource": "MISC", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"]}, {"url": "https://lists.debian.org/debian-lts-announce/2022/06/msg00020.html", "name": "[debian-lts-announce] 20220628 [SECURITY] [DLA 3058-1] libsndfile security update", "refsource": "MLIST", "tags": []}]}

{"redhat": [{"lastseen": "2022-05-16T17:54:37", "description": "libsndfile is a C library for reading and writing files containing sampled sound, such as AIFF, AU, or WAV. \n\nSecurity Fix(es):\n\n* libsndfile: heap out-of-bounds read in src/flac.c in flac_buffer_copy (CVE-2021-4156)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2022-05-10T08:10:12", "type": "redhat", "title": "(RHSA-2022:1968) Moderate: libsndfile security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-4156"], "modified": "2022-05-10T10:04:39", "id": "RHSA-2022:1968", "href": "https://access.redhat.com/errata/RHSA-2022:1968", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:P"}}], "suse": [{"lastseen": "2022-04-18T12:39:48", "description": "An update that fixes one vulnerability is now available.\n\nDescription:\n\n This update for libsndfile fixes the following issues:\n\n - CVE-2021-4156: Fixed heap buffer overflow in flac_buffer_copy that could\n potentially lead to heap exploitation (bsc#1194006).\n\n\nPatch Instructions:\n\n To install this openSUSE Security Update use the SUSE recommended installation methods\n like YaST online_update or \"zypper patch\".\n\n Alternatively you can run the command listed for your product:\n\n - openSUSE Leap 15.3:\n\n zypper in -t patch openSUSE-SLE-15.3-2022-52=1", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2022-01-11T00:00:00", "type": "suse", "title": "Security update for libsndfile (important)", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-4156"], "modified": "2022-01-11T00:00:00", "id": "OPENSUSE-SU-2022:0052-1", "href": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/DAZJOOODJLFD53X2AQIEWTT3MS53WDSD/", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:P"}}, {"lastseen": "2022-06-30T18:24:20", "description": "An update that fixes one vulnerability is now available.\n\nDescription:\n\n This update for libsndfile fixes the following issues:\n\n - CVE-2021-4156: Fixed heap buffer overflow in flac_buffer_copy that could\n potentially lead to heap exploitation (bsc#1194006).\n\n\nPatch Instructions:\n\n To install this openSUSE Security Update use the SUSE recommended installation methods\n like YaST online_update or \"zypper patch\".\n\n Alternatively you can run the command listed for your product:\n\n - openSUSE Leap 15.4:\n\n zypper in -t patch openSUSE-SLE-15.4-2022-52=1", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2022-02-17T00:00:00", "type": "suse", "title": "Security update for libsndfile (important)", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-4156"], "modified": "2022-02-17T00:00:00", "id": "OPENSUSE-SU-2022:0052-2", "href": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/VSQMEWJEKHHULWEYG5BILMQK5GWMYZOS/", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:P"}}], "redhatcve": [{"lastseen": "2022-06-08T11:09:10", "description": "An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws.\n#### Mitigation\n\nOne way to mitigate the risk of this flaw is to not open untrusted sound files using libsndfile or other linked programs. \n\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2021-12-22T09:52:05", "type": "redhatcve", "title": "CVE-2021-4156", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-4156"], "modified": "2022-06-08T08:23:53", "id": "RH:CVE-2021-4156", "href": "https://access.redhat.com/security/cve/cve-2021-4156", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:P"}}], "oraclelinux": [{"lastseen": "2022-05-17T14:43:04", "description": "[1.0.28-12]\n- fix heap buffer overflow in flac (#2030507)\n[1.0.28-11]\n- a crafted wav file could cause heap buffer overflow that allowed an arbitrary code execution(#1985028)", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2022-05-17T00:00:00", "type": "oraclelinux", "title": "libsndfile security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-4156"], "modified": "2022-05-17T00:00:00", "id": "ELSA-2022-1968", "href": "http://linux.oracle.com/errata/ELSA-2022-1968.html", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:P"}}], "ubuntu": [{"lastseen": "2022-05-11T01:34:38", "description": "It was discovered that libsndfile was incorrectly performing memory \nmanagement operations and incorrectly using buffers when executing \nits FLAC codec. If a user or automated system were tricked into \nprocessing a specially crafted sound file, an attacker could \npossibly use this issue to cause a denial of service or obtain \nsensitive information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2022-05-10T00:00:00", "type": "ubuntu", "title": "libsndfile vulnerability", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-4156"], "modified": "2022-05-10T00:00:00", "id": "USN-5409-1", "href": "https://ubuntu.com/security/notices/USN-5409-1", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:P"}}], "veracode": [{"lastseen": "2022-06-29T02:01:39", "description": "libsndfile is vulnerable to denial of service. The vulnerability exists due to an out-of-bounds read in libsndfile's FLAC codec functionality allowing an attacker to crash the system by submitting a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2022-06-03T15:45:52", "type": "veracode", "title": "Denial Of Service (DoS)", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-4156"], "modified": "2022-06-29T01:49:20", "id": "VERACODE:35874", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-35874/summary", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:P"}}], "almalinux": [{"lastseen": "2022-05-19T08:33:11", "description": "libsndfile is a C library for reading and writing files containing sampled sound, such as AIFF, AU, or WAV. \n\nSecurity Fix(es):\n\n* libsndfile: heap out-of-bounds read in src/flac.c in flac_buffer_copy (CVE-2021-4156)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2022-05-10T08:10:12", "type": "almalinux", "title": "Moderate: libsndfile security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-4156"], "modified": "2022-05-10T08:10:11", "id": "ALSA-2022:1968", "href": "https://errata.almalinux.org/8/ALSA-2022-1968.html", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:P"}}], "debiancve": [{"lastseen": "2022-06-26T14:34:23", "description": "An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. 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