{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-6387", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2024-06-27T13:41:03.421Z", "datePublished": "2024-07-01T12:37:25.431Z", "dateUpdated": "2024-09-14T02:09:26.419Z" }, "containers": { "cna": { "title": "Openssh: regresshion - race condition in ssh allows rce/dos", "metrics": [ { "other": { "content": { "value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period." } ], "affected": [ { "repo": "https://anongit.mindrot.org/openssh.git", "versions": [ { "status": "affected", "version": "8.5p1", "versionType": "custom", "lessThanOrEqual": "9.7p1" } ], "packageName": "OpenSSH", "collectionURL": "https://www.openssh.com/", "defaultStatus": "unaffected" }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openssh", "defaultStatus": "affected", "versions": [ { "version": "0:8.7p1-38.el9_4.1", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/o:redhat:enterprise_linux:9::baseos", "cpe:/a:redhat:enterprise_linux:9::appstream" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openssh", "defaultStatus": "affected", "versions": [ { "version": "0:8.7p1-38.el9_4.1", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/o:redhat:enterprise_linux:9::baseos", "cpe:/a:redhat:enterprise_linux:9::appstream" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openssh", "defaultStatus": "affected", "versions": [ { "version": "0:8.7p1-12.el9_0.1", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/o:redhat:rhel_e4s:9.0::baseos", "cpe:/a:redhat:rhel_e4s:9.0::appstream" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Extended Update Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openssh", "defaultStatus": "affected", "versions": [ { "version": "0:8.7p1-30.el9_2.4", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/o:redhat:rhel_eus:9.2::baseos", "cpe:/a:redhat:rhel_eus:9.2::appstream" ] }, { "vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4.13", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhcos", "defaultStatus": "affected", "versions": [ { "version": "413.92.202407091321-0", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:openshift:4.13::el8", "cpe:/a:redhat:openshift:4.13::el9" ] }, { "vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4.14", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhcos", "defaultStatus": "affected", "versions": [ { "version": "414.92.202407091253-0", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:openshift:4.14::el9", "cpe:/a:redhat:openshift:4.14::el8" ] }, { "vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4.15", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhcos", "defaultStatus": "affected", "versions": [ { "version": "415.92.202407091355-0", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:openshift:4.15::el8", "cpe:/a:redhat:openshift:4.15::el9" ] }, { "vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4.16", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhcos", "defaultStatus": "affected", "versions": [ { "version": "416.94.202407081958-0", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:openshift:4.16::el9" ] }, { "vendor": "Red Hat", "product": "Red Hat Ceph Storage 5", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openssh", "defaultStatus": "unaffected", "cpes": [ "cpe:/a:redhat:ceph_storage:5" ] }, { "vendor": "Red Hat", "product": "Red Hat Ceph Storage 6", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openssh", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:ceph_storage:6" ] }, { "vendor": "Red Hat", "product": "Red Hat Ceph Storage 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openssh", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:ceph_storage:7" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openssh", "defaultStatus": "unaffected", "cpes": [ "cpe:/o:redhat:enterprise_linux:6" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openssh", "defaultStatus": "unaffected", "cpes": [ "cpe:/o:redhat:enterprise_linux:7" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openssh", "defaultStatus": "unaffected", "cpes": [ "cpe:/o:redhat:enterprise_linux:8" ] } ], "references": [ { "url": "https://access.redhat.com/errata/RHSA-2024:4312", "name": "RHSA-2024:4312", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2024:4340", "name": "RHSA-2024:4340", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2024:4389", "name": "RHSA-2024:4389", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2024:4469", "name": "RHSA-2024:4469", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2024:4474", "name": "RHSA-2024:4474", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2024:4479", "name": "RHSA-2024:4479", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2024:4484", "name": "RHSA-2024:4484", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2024-6387", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2294604", "name": "RHBZ#2294604", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] }, { "url": "https://santandersecurityresearch.github.io/blog/sshing_the_masses.html" }, { "url": "https://www.openssh.com/txt/release-9.8" }, { "url": "https://www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt" } ], "datePublic": "2024-07-01T08:00:00+00:00", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-364", "description": "Signal Handler Race Condition", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-364: Signal Handler Race Condition", "workarounds": [ { "lang": "en", "value": "The below process can protect against a Remote Code Execution attack by disabling the LoginGraceTime parameter on Red Hat Enterprise Linux 9. However, the sshd server is still vulnerable to a Denial of Service if an attacker exhausts all the connections.\n\n1) As root user, open the /etc/ssh/sshd_config\n2) Add or edit the parameter configuration:\n~~~\nLoginGraceTime 0\n~~~\n3) Save and close the file\n4) Restart the sshd daemon:\n~~~\nsystemctl restart sshd.service\n~~~\n\nSetting LoginGraceTime to 0 disables the SSHD server's ability to drop connections if authentication is not completed within the specified timeout. If this mitigation is implemented, it is highly recommended to use a tool like 'fail2ban' alongside a firewall to monitor log files and manage connections appropriately.\n\nIf any of the mitigations mentioned above is used, please note that the removal of LoginGraceTime parameter from sshd_config is not automatic when the updated package is installed." } ], "timeline": [ { "lang": "en", "time": "2024-06-27T00:00:00+00:00", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2024-07-01T08:00:00+00:00", "value": "Made public." } ], "credits": [ { "lang": "en", "value": "Red Hat would like to thank Qualys Threat Research Unit (TRU) (Qualys) for reporting this issue." } ], "providerMetadata": { "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2024-09-14T02:09:26.419Z" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-07-02T13:18:34.695298Z", "id": "CVE-2024-6387", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-02T13:18:46.662Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-19T07:47:51.801Z" }, "title": "CVE Program Container", "references": [ { "url": "http://www.openwall.com/lists/oss-security/2024/07/01/12", "tags": [ "x_transferred" ] }, { "url": "http://www.openwall.com/lists/oss-security/2024/07/01/13", "tags": [ "x_transferred" ] }, { "url": "http://www.openwall.com/lists/oss-security/2024/07/02/1", "tags": [ "x_transferred" ] }, { "url": "http://www.openwall.com/lists/oss-security/2024/07/03/1", "tags": [ "x_transferred" ] }, { "url": "http://www.openwall.com/lists/oss-security/2024/07/03/11", "tags": [ "x_transferred" ] }, { "url": 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