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amazonAmazonALAS-2021-1483
HistoryFeb 23, 2021 - 8:18 p.m.

Important: subversion

2021-02-2320:18:00
alas.aws.amazon.com
15

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.007 Low

EPSS

Percentile

80.3%

Issue Overview:

A null-pointer-dereference flaw was found in mod_authz_svn of subversion. This flaw allows a remote, unauthenticated attacker to cause a denial of service in some server configurations. The highest threat from this vulnerability is to system availability. (CVE-2020-17525)

Affected Packages:

subversion

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

New Packages:

i686:  
    subversion-ruby-1.9.7-1.61.amzn1.i686  
    subversion-libs-1.9.7-1.61.amzn1.i686  
    mod24_dav_svn-1.9.7-1.61.amzn1.i686  
    subversion-tools-1.9.7-1.61.amzn1.i686  
    subversion-1.9.7-1.61.amzn1.i686  
    subversion-python27-1.9.7-1.61.amzn1.i686  
    subversion-perl-1.9.7-1.61.amzn1.i686  
    subversion-python26-1.9.7-1.61.amzn1.i686  
    subversion-javahl-1.9.7-1.61.amzn1.i686  
    subversion-debuginfo-1.9.7-1.61.amzn1.i686  
    subversion-devel-1.9.7-1.61.amzn1.i686  
  
src:  
    subversion-1.9.7-1.61.amzn1.src  
  
x86_64:  
    subversion-debuginfo-1.9.7-1.61.amzn1.x86_64  
    subversion-perl-1.9.7-1.61.amzn1.x86_64  
    subversion-python27-1.9.7-1.61.amzn1.x86_64  
    subversion-1.9.7-1.61.amzn1.x86_64  
    subversion-tools-1.9.7-1.61.amzn1.x86_64  
    subversion-ruby-1.9.7-1.61.amzn1.x86_64  
    subversion-devel-1.9.7-1.61.amzn1.x86_64  
    mod24_dav_svn-1.9.7-1.61.amzn1.x86_64  
    subversion-javahl-1.9.7-1.61.amzn1.x86_64  
    subversion-python26-1.9.7-1.61.amzn1.x86_64  
    subversion-libs-1.9.7-1.61.amzn1.x86_64  

Additional References

Red Hat: CVE-2020-17525

Mitre: CVE-2020-17525

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.007 Low

EPSS

Percentile

80.3%