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amazonAmazonALAS2-2019-1333
HistoryOct 21, 2019 - 6:01 p.m.

Medium: procps-ng

2019-10-2118:01:00
alas.aws.amazon.com
15

7 High

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

8.8 High

AI Score

Confidence

High

4.4 Medium

CVSS2

Access Vector

LOCAL

Access 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

0.0004 Low

EPSS

Percentile

9.5%

Issue Overview:

If the HOME environment variable is unset or empty, top will read its configuration file from the current working directory without any security check. If a user runs top with HOME unset in an attacker-controlled directory, the attacker could achieve privilege escalation by exploiting one of several vulnerabilities in the config_file() function.(CVE-2018-1122)

Affected Packages:

procps-ng

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update procps-ng to update your system.

New Packages:

aarch64:  
    procps-ng-3.3.10-26.amzn2.aarch64  
    procps-ng-devel-3.3.10-26.amzn2.aarch64  
    procps-ng-i18n-3.3.10-26.amzn2.aarch64  
    procps-ng-debuginfo-3.3.10-26.amzn2.aarch64  
  
i686:  
    procps-ng-3.3.10-26.amzn2.i686  
    procps-ng-devel-3.3.10-26.amzn2.i686  
    procps-ng-i18n-3.3.10-26.amzn2.i686  
    procps-ng-debuginfo-3.3.10-26.amzn2.i686  
  
src:  
    procps-ng-3.3.10-26.amzn2.src  
  
x86_64:  
    procps-ng-3.3.10-26.amzn2.x86_64  
    procps-ng-devel-3.3.10-26.amzn2.x86_64  
    procps-ng-i18n-3.3.10-26.amzn2.x86_64  
    procps-ng-debuginfo-3.3.10-26.amzn2.x86_64  

Additional References

Red Hat: CVE-2018-1122

Mitre: CVE-2018-1122

7 High

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

8.8 High

AI Score

Confidence

High

4.4 Medium

CVSS2

Access Vector

LOCAL

Access 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

0.0004 Low

EPSS

Percentile

9.5%