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amazonAmazonALAS2-2020-1568
HistoryDec 08, 2020 - 8:55 p.m.

Important: librepo

2020-12-0820:55:00
alas.aws.amazon.com
20

8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.7 High

AI Score

Confidence

High

8.5 High

CVSS2

Access Vector

Access Complexity

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:S/C:C/I:C/A:C

0.002 Low

EPSS

Percentile

55.2%

Issue Overview:

A flaw was found in librepo. A directory traversal vulnerability was found where it failed to sanitize paths in remote repository metadata. An attacker controlling a remote repository may be able to copy files outside of the destination directory on the targeted system via path traversal. This flaw could potentially result in system compromise via the overwriting of critical system files. The highest threat from this flaw is to users that make use of untrusted third-party repositories. (CVE-2020-14352)

Affected Packages:

librepo

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 librepo to update your system.

New Packages:

aarch64:  
    librepo-1.8.1-8.amzn2.aarch64  
    librepo-devel-1.8.1-8.amzn2.aarch64  
    python-librepo-1.8.1-8.amzn2.aarch64  
    librepo-debuginfo-1.8.1-8.amzn2.aarch64  
  
i686:  
    librepo-1.8.1-8.amzn2.i686  
    librepo-devel-1.8.1-8.amzn2.i686  
    python-librepo-1.8.1-8.amzn2.i686  
    librepo-debuginfo-1.8.1-8.amzn2.i686  
  
src:  
    librepo-1.8.1-8.amzn2.src  
  
x86_64:  
    librepo-1.8.1-8.amzn2.x86_64  
    librepo-devel-1.8.1-8.amzn2.x86_64  
    python-librepo-1.8.1-8.amzn2.x86_64  
    librepo-debuginfo-1.8.1-8.amzn2.x86_64  

Additional References

Red Hat: CVE-2020-14352

Mitre: CVE-2020-14352

8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.7 High

AI Score

Confidence

High

8.5 High

CVSS2

Access Vector

Access Complexity

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:S/C:C/I:C/A:C

0.002 Low

EPSS

Percentile

55.2%