CVE-2022-27666

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{"affected_release": [{"advisory": "RHSA-2022:5344", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-372.13.1.rt7.170.el8_6", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-06-28T00:00:00Z"}, {"advisory": "RHSA-2022:5219", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-06-28T00:00:00Z"}, {"advisory": "RHSA-2022:5316", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-372.13.1.el8_6", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-06-30T00:00:00Z"}, {"advisory": "RHSA-2022:4924", "cpe": "cpe:/o:redhat:rhel_e4s:8.1", "package": "kernel-0:4.18.0-147.67.1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions", "release_date": "2022-06-07T00:00:00Z"}, {"advisory": "RHSA-2022:4942", "cpe": "cpe:/o:redhat:rhel_e4s:8.1", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions", "release_date": "2022-06-08T00:00:00Z"}, {"advisory": "RHSA-2022:5224", "cpe": "cpe:/a:redhat:rhel_eus:8.2::nfv", "package": "kernel-rt-0:4.18.0-193.87.1.rt13.137.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2022-06-28T00:00:00Z"}, {"advisory": "RHSA-2022:5220", "cpe": "cpe:/o:redhat:rhel_eus:8.2", "package": "kernel-0:4.18.0-193.87.1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2022-06-28T00:00:00Z"}, {"advisory": "RHSA-2022:5476", "cpe": "cpe:/o:redhat:rhel_eus:8.2", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2022-07-01T00:00:00Z"}, {"advisory": "RHSA-2022:4835", "cpe": "cpe:/a:redhat:rhel_eus:8.4::nfv", "package": "kernel-rt-0:4.18.0-305.49.1.rt7.121.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2022-05-31T00:00:00Z"}, {"advisory": "RHSA-2022:4809", "cpe": "cpe:/o:redhat:rhel_eus:8.4", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2022-05-31T00:00:00Z"}, {"advisory": "RHSA-2022:4829", "cpe": "cpe:/o:redhat:rhel_eus:8.4", "package": "kernel-0:4.18.0-305.49.1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2022-05-31T00:00:00Z"}, {"advisory": "RHSA-2022:5249", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-70.17.1.el9_0", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-07-01T00:00:00Z"}, {"advisory": "RHSA-2022:5267", "cpe": "cpe:/a:redhat:enterprise_linux:9::nfv", "package": "kernel-rt-0:5.14.0-70.17.1.rt21.89.el9_0", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-06-28T00:00:00Z"}, {"advisory": "RHSA-2022:5214", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-06-28T00:00:00Z"}, {"advisory": "RHSA-2022:5249", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-70.17.1.el9_0", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-07-01T00:00:00Z"}, {"advisory": "RHSA-2022:5316", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "kernel-0:4.18.0-372.13.1.el8_6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2022-06-30T00:00:00Z"}, {"advisory": "RHSA-2022:5678", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "redhat-virtualization-host-0:4.5.1-202207170705_8.6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2022-07-21T00:00:00Z"}], "bugzilla": {"description": "kernel: buffer overflow in IPsec ESP transformation code", "id": "2061633", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2061633"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-122", "details": ["A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation threat.", "A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation threat."], "mitigation": {"lang": "en:us", "value": "The given exploit needs CAP_NET_ADMIN to set up IPsec SA and a user namespace is used to get that capability, so disabling unprivileged user namespaces gives some protection.\n~~~\nOn non-containerized deployments of Red Hat Enterprise Linux 8, you can disable user namespaces by setting user.max_user_namespaces to 0:\n# echo \"user.max_user_namespaces=0\" > /etc/sysctl.d/userns.conf\n# sysctl -p /etc/sysctl.d/userns.conf\nOn containerized deployments, such as Red Hat OpenShift Container Platform, do not use this mitigation as the functionality is needed to be enabled.\n~~~\nNote: If the target system is already using IPsec and has SA configured, then no additional privileges are needed to exploit the issue."}, "name": "CVE-2022-27666", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2022-03-11T06:30:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-27666\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-27666\nhttps://github.com/torvalds/linux/commit/ebe48d368e97d007bfeb76fcb065d6cfc4c96645"], "threat_severity": "Important"}

{}