CVE-2017-16994

The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel before 4.14.2 mishandles holes in hugetlb ranges, which allows local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system call.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 2.1 LOW

5.5^/10

CVSS v3.0 : MEDIUM

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://github.com/torvalds/linux/commit/373c4557d2aa362702c4c2d41288fb1e54990b7c	Patch
https://bugs.chromium.org/p/project-zero/issues/detail?id=1431	Exploit Issue Tracking Patch
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.2	Release Notes
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=373c4557d2aa362702c4c2d41288fb1e54990b7c	Patch
http://www.securityfocus.com/bid/101969	Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/43178/	Exploit Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0502
https://usn.ubuntu.com/3617-2/
https://usn.ubuntu.com/3617-1/
https://usn.ubuntu.com/3619-1/
https://usn.ubuntu.com/3617-3/
https://usn.ubuntu.com/3619-2/
https://usn.ubuntu.com/3632-1/

Advertisement

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Information

Published : 2017-11-27 11:29

Updated : 2018-04-24 18:29

NVD link : CVE-2017-16994

Mitre link : CVE-2017-16994

JSON object : View

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

Advertisement

Products Affected

linux

linux_kernel

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://github.com/torvalds/linux/commit/373c4557d2aa362702c4c2d41288fb1e54990b7c", "name": "https://github.com/torvalds/linux/commit/373c4557d2aa362702c4c2d41288fb1e54990b7c", "tags": ["Patch"], "refsource": "CONFIRM"}, {"url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1431", "name": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1431", "tags": ["Exploit", "Issue Tracking", "Patch"], "refsource": "CONFIRM"}, {"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.2", "name": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.2", "tags": ["Release Notes"], "refsource": "CONFIRM"}, {"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=373c4557d2aa362702c4c2d41288fb1e54990b7c", "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=373c4557d2aa362702c4c2d41288fb1e54990b7c", "tags": ["Patch"], "refsource": "CONFIRM"}, {"url": "http://www.securityfocus.com/bid/101969", "name": "101969", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "BID"}, {"url": "https://www.exploit-db.com/exploits/43178/", "name": "43178", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "refsource": "EXPLOIT-DB"}, {"url": "https://access.redhat.com/errata/RHSA-2018:0502", "name": "RHSA-2018:0502", "tags": [], "refsource": "REDHAT"}, {"url": "https://usn.ubuntu.com/3617-2/", "name": "USN-3617-2", "tags": [], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/3617-1/", "name": "USN-3617-1", "tags": [], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/3619-1/", "name": "USN-3619-1", "tags": [], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/3617-3/", "name": "USN-3617-3", "tags": [], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/3619-2/", "name": "USN-3619-2", "tags": [], "refsource": "UBUNTU"}, {"url": "https://usn.ubuntu.com/3632-1/", "name": "USN-3632-1", "tags": [], "refsource": "UBUNTU"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel before 4.14.2 mishandles holes in hugetlb ranges, which allows local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system call."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-200"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2017-16994", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 2.1, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "severity": "LOW", "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 1.8}}, "publishedDate": "2017-11-27T19:29Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.14.2"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2018-04-25T01:29Z"}