CVE-2017-18257

The __get_data_block function in fs/f2fs/data.c in the Linux kernel before 4.11 allows local users to cause a denial of service (integer overflow and loop) via crafted use of the open and fallocate system calls with an FS_IOC_FIEMAP ioctl.

CVSS v3 5.5 MEDIUM
CVSS v2.0 4.9 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

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

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.9^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b86e33075ed1909d8002745b56ecf73b833db143	Patch
https://github.com/torvalds/linux/commit/b86e33075ed1909d8002745b56ecf73b833db143	Patch
https://usn.ubuntu.com/3696-1/
https://usn.ubuntu.com/3696-2/
https://www.debian.org/security/2018/dsa-4188	Third Party Advisory

Configurations

Configuration 1 (hide)

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

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2018-04-04 17:29

Updated : 2018-07-04 01:29

NVD link : CVE-2017-18257

Mitre link : CVE-2017-18257

CVE.ORG link : CVE-2017-18257

JSON object : View

Products Affected

debian

debian_linux

linux

linux_kernel

CWE

CWE-190

Integer Overflow or Wraparound

{"id": "CVE-2017-18257", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"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:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2018-04-04T17:29:01.520", "references": [{"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b86e33075ed1909d8002745b56ecf73b833db143", "tags": ["Patch"], "source": "cve@mitre.org"}, {"url": "https://github.com/torvalds/linux/commit/b86e33075ed1909d8002745b56ecf73b833db143", "tags": ["Patch"], "source": "cve@mitre.org"}, {"url": "https://usn.ubuntu.com/3696-1/", "source": "cve@mitre.org"}, {"url": "https://usn.ubuntu.com/3696-2/", "source": "cve@mitre.org"}, {"url": "https://www.debian.org/security/2018/dsa-4188", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "The __get_data_block function in fs/f2fs/data.c in the Linux kernel before 4.11 allows local users to cause a denial of service (integer overflow and loop) via crafted use of the open and fallocate system calls with an FS_IOC_FIEMAP ioctl."}, {"lang": "es", "value": "La funci\u00f3n __get_data_block en fs/f2fs/data.c en el kernel de Linux, en versiones anteriores a la 4.11, permite que usuarios locales provoquen una denegaci\u00f3n de servicio (desbordamiento de enteros y bucle) mediante el uso manipulado de las llamadas del sistema open y fallocate con un ioctl FS_IOC_FIEMAP."}], "lastModified": "2018-07-04T01:29:02.040", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "68E74529-58C5-4D73-8176-DDDF25C71F22", "versionEndExcluding": "4.11"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}