Amazon Linux AMI update for graphviz

Published: 2019-05-20

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2019-11023
CWE-ID	CWE-476
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Amazon Linux AMI Operating systems & Components / Operating system
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU18637

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-11023

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dreference error in the agroot() function within cgraphobj.c of the libcgraph.a. A remote attacker can pass specially crafted GraphML input to the affected application and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

i686:
    graphviz-R-2.38.0-18.51.amzn1.i686
    graphviz-debuginfo-2.38.0-18.51.amzn1.i686
    graphviz-graphs-2.38.0-18.51.amzn1.i686
    graphviz-lua-2.38.0-18.51.amzn1.i686
    graphviz-tcl-2.38.0-18.51.amzn1.i686
    graphviz-python26-2.38.0-18.51.amzn1.i686
    graphviz-java-2.38.0-18.51.amzn1.i686
    graphviz-gd-2.38.0-18.51.amzn1.i686
    graphviz-php54-2.38.0-18.51.amzn1.i686
    graphviz-python27-2.38.0-18.51.amzn1.i686
    graphviz-ruby-2.38.0-18.51.amzn1.i686
    graphviz-2.38.0-18.51.amzn1.i686
    graphviz-doc-2.38.0-18.51.amzn1.i686
    graphviz-perl-2.38.0-18.51.amzn1.i686
    graphviz-guile-2.38.0-18.51.amzn1.i686
    graphviz-devel-2.38.0-18.51.amzn1.i686

src:
    graphviz-2.38.0-18.51.amzn1.src

x86_64:
    graphviz-lua-2.38.0-18.51.amzn1.x86_64
    graphviz-ruby-2.38.0-18.51.amzn1.x86_64
    graphviz-graphs-2.38.0-18.51.amzn1.x86_64
    graphviz-gd-2.38.0-18.51.amzn1.x86_64
    graphviz-2.38.0-18.51.amzn1.x86_64
    graphviz-devel-2.38.0-18.51.amzn1.x86_64
    graphviz-tcl-2.38.0-18.51.amzn1.x86_64
    graphviz-doc-2.38.0-18.51.amzn1.x86_64
    graphviz-guile-2.38.0-18.51.amzn1.x86_64
    graphviz-python27-2.38.0-18.51.amzn1.x86_64
    graphviz-java-2.38.0-18.51.amzn1.x86_64
    graphviz-debuginfo-2.38.0-18.51.amzn1.x86_64
    graphviz-python26-2.38.0-18.51.amzn1.x86_64
    graphviz-R-2.38.0-18.51.amzn1.x86_64
    graphviz-perl-2.38.0-18.51.amzn1.x86_64
    graphviz-php54-2.38.0-18.51.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3

cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*

External links

https://alas.aws.amazon.com/ALAS-2019-1207.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.