GSD-2017-7518
Vulnerability from gsd - Updated: 2023-12-13 01:21Details
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…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…