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UbuntuUSN-3748-1

HistoryAug 21, 2018 - 12:00 a.m.

base-files vulnerability

2018-08-2100:00:00

ubuntu.com

CVSS2

4.4

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

7.1

Confidence

High

EPSS

Percentile

5.1%

JSON

Releases

Ubuntu 18.04 ESM

Packages

base-files - Debian base system miscellaneous files

Details

Sander Bos discovered that the MOTD update script incorrectly handled
temporary files. A local attacker could use this issue to cause a denial of
service, or possibly escalate privileges if kernel symlink restrictions
were disabled.

OSVersionArchitecturePackageVersionFilename
Ubuntu18.04noarchbase-files< 10.1ubuntu2.2UNKNOWN
Ubuntu18.04noarchlsb-release-udeb< 10.1ubuntu2.2UNKNOWN

OS	Version	Architecture	Package	Version	Filename
Ubuntu	18.04	noarch	base-files	< 10.1ubuntu2.2	UNKNOWN
Ubuntu	18.04	noarch	lsb-release-udeb	< 10.1ubuntu2.2	UNKNOWN

References

ubuntu.com/security/CVE-2018-6557

CVSS2

4.4

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

7.1

Confidence

High

EPSS

Percentile

5.1%

JSON

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