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amazonAmazonALAS-2018-1072
HistorySep 05, 2018 - 7:31 p.m.

Medium: libxml2

2018-09-0519:31:00
alas.aws.amazon.com
527

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.029 Low

EPSS

Percentile

90.7%

Issue Overview:

A null pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2 when parsing invalid XPath expression. Applications processing untrusted XSL format inputs with the use of libxml2 library may be vulnerable to denial of service attack due to crash of the application.(CVE-2018-14404)

Affected Packages:

libxml2

Issue Correction:
Run yum update libxml2 to update your system.

New Packages:

i686:  
    libxml2-devel-2.9.1-6.3.52.amzn1.i686  
    libxml2-static-2.9.1-6.3.52.amzn1.i686  
    libxml2-debuginfo-2.9.1-6.3.52.amzn1.i686  
    libxml2-2.9.1-6.3.52.amzn1.i686  
    libxml2-python26-2.9.1-6.3.52.amzn1.i686  
    libxml2-python27-2.9.1-6.3.52.amzn1.i686  
  
src:  
    libxml2-2.9.1-6.3.52.amzn1.src  
  
x86_64:  
    libxml2-static-2.9.1-6.3.52.amzn1.x86_64  
    libxml2-2.9.1-6.3.52.amzn1.x86_64  
    libxml2-python27-2.9.1-6.3.52.amzn1.x86_64  
    libxml2-debuginfo-2.9.1-6.3.52.amzn1.x86_64  
    libxml2-devel-2.9.1-6.3.52.amzn1.x86_64  
    libxml2-python26-2.9.1-6.3.52.amzn1.x86_64  

Additional References

Red Hat: CVE-2018-14404

Mitre: CVE-2018-14404

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.029 Low

EPSS

Percentile

90.7%