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amazonAmazonALAS-2017-855
HistoryJul 06, 2017 - 7:03 p.m.

Medium: sudo

2017-07-0619:03:00
alas.aws.amazon.com
18

8.2 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.002 Low

EPSS

Percentile

58.2%

Issue Overview:

It was found that the original fix for CVE-2017-1000367 was incomplete. A flaw was found in the way sudo parsed tty information from the process status file in the proc filesystem. A local user with privileges to execute commands via sudo could use this flaw to escalate their privileges to root. (CVE-2017-1000368)

Affected Packages:

sudo

Issue Correction:
Run yum update sudo to update your system.

New Packages:

i686:  
    sudo-1.8.6p3-29.27.amzn1.i686  
    sudo-debuginfo-1.8.6p3-29.27.amzn1.i686  
    sudo-devel-1.8.6p3-29.27.amzn1.i686  
  
src:  
    sudo-1.8.6p3-29.27.amzn1.src  
  
x86_64:  
    sudo-1.8.6p3-29.27.amzn1.x86_64  
    sudo-debuginfo-1.8.6p3-29.27.amzn1.x86_64  
    sudo-devel-1.8.6p3-29.27.amzn1.x86_64  

Additional References

Red Hat: CVE-2017-1000368

Mitre: CVE-2017-1000368

8.2 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.002 Low

EPSS

Percentile

58.2%