gsd-2017-7518
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2017-7518", "description": "A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.", "id": "GSD-2017-7518", "references": [ "https://www.suse.com/security/cve/CVE-2017-7518.html", "https://www.debian.org/security/2017/dsa-3981", "https://access.redhat.com/errata/RHSA-2018:0412", "https://access.redhat.com/errata/RHSA-2018:0395", "https://ubuntu.com/security/CVE-2017-7518", "https://advisories.mageia.org/CVE-2017-7518.html", "https://linux.oracle.com/cve/CVE-2017-7518.html" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2017-7518" ], "details": "A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.", "id": "GSD-2017-7518", "modified": "2023-12-13T01:21:06.459301Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "secalert@redhat.com", "ID": "CVE-2017-7518", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Kernel:", "version": { "version_data": [ { "version_value": "4.12" } ] } } ] }, "vendor_name": "[UNKNOWN]" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this." } ] }, "impact": { "cvss": [ [ { "vectorString": "5.5/CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.0" } ], [ { "vectorString": "5.4/AV:A/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0" } ] ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-250" } ] } ] }, "references": { "reference_data": [ { "name": "RHSA-2018:0412", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2018:0412" }, { "name": "https://access.redhat.com/articles/3290921", "refsource": "CONFIRM", "url": "https://access.redhat.com/articles/3290921" }, { "name": "USN-3619-2", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/3619-2/" }, { "name": "RHSA-2018:0395", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2018:0395" }, { "name": "USN-3754-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/3754-1/" }, { "name": "1038782", "refsource": "SECTRACK", "url": "http://www.securitytracker.com/id/1038782" }, { "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518", "refsource": "CONFIRM", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518" }, { "name": "[oss-security] 20170623 CVE-2017-7518 Kernel: KVM: debug exception via syscall emulation", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2017/06/23/5" }, { "name": "USN-3619-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/3619-1/" }, { "name": "DSA-3981", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2017/dsa-3981" }, { "name": "[kvm] 20170622 [PATCH] KVM: x86: fix singlestepping over syscall", "refsource": "MLIST", "url": "https://www.spinics.net/lists/kvm/msg151817.html" }, { "name": "99263", "refsource": "BID", "url": "http://www.securityfocus.com/bid/99263" } ] } }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndExcluding": "4.12", "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "secalert@redhat.com", "ID": "CVE-2017-7518" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-755" } ] } ] }, "references": { "reference_data": [ { "name": "[kvm] 20170622 [PATCH] KVM: x86: fix singlestepping over syscall", "refsource": "MLIST", "tags": [ "Mailing List", "Patch" ], "url": "https://www.spinics.net/lists/kvm/msg151817.html" }, { "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518", "refsource": "CONFIRM", "tags": [ "Issue Tracking", "Patch", "Third Party Advisory" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518" }, { "name": "https://access.redhat.com/articles/3290921", "refsource": "CONFIRM", "tags": [ "Permissions Required", "Third Party Advisory" ], "url": "https://access.redhat.com/articles/3290921" }, { "name": "[oss-security] 20170623 CVE-2017-7518 Kernel: KVM: debug exception via syscall emulation", "refsource": "MLIST", "tags": [ "Mailing List", "Patch", "Third Party Advisory" ], "url": "http://www.openwall.com/lists/oss-security/2017/06/23/5" }, { "name": "DSA-3981", "refsource": "DEBIAN", "tags": [ "Third Party Advisory" ], "url": "https://www.debian.org/security/2017/dsa-3981" }, { "name": "USN-3619-2", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/3619-2/" }, { "name": "USN-3619-1", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/3619-1/" }, { "name": "RHSA-2018:0412", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2018:0412" }, { "name": "RHSA-2018:0395", "refsource": "REDHAT", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2018:0395" }, { "name": "1038782", "refsource": "SECTRACK", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securitytracker.com/id/1038782" }, { "name": "99263", "refsource": "BID", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/99263" }, { "name": "USN-3754-1", "refsource": "UBUNTU", "tags": [ "Third Party Advisory" ], "url": "https://usn.ubuntu.com/3754-1/" } ] } }, "impact": { "baseMetricV2": { "cvssV2": { "accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0" }, "exploitabilityScore": 3.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "MEDIUM", "userInteractionRequired": false }, "baseMetricV3": { "cvssV3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.0" }, "exploitabilityScore": 1.8, "impactScore": 5.9 } }, "lastModifiedDate": "2019-10-09T23:29Z", "publishedDate": "2018-07-30T15:29Z" } } }
Loading...
Loading...
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.