Graphviz 2.34.0 lib/cgraph/scan.l yyerror memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability classified as problematic was found in Graphviz 2.34.0. Affected by this vulnerability is the function yyerror in the library lib/cgraph/scan.l. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability.

The bug was discovered 01/08/2014. The weakness was presented 08/07/2017 by Sebastian Krahmer as not defined mailinglist post (oss-sec). It is possible to read the advisory at This vulnerability is known as CVE-2014-1235 since 01/08/2014. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 57 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 72944 (Amazon Linux AMI : graphviz (ALAS-2014-296)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350449 (Amazon Linux Security Advisory for graphviz: ALAS-2014-296).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (90198) and Tenable (72944). See 66036 for similar entry.




  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.8
VulDB Temp Score: 5.6
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NVD Base Score: 7.8
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Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 72944
Nessus Name: Amazon Linux AMI : graphviz (ALAS-2014-296)
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OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: ALAS-2014-297
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Threat Intelligenceinfo

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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍



01/08/2014 🔍
01/08/2014 +0 days 🔍
01/09/2014 +1 days 🔍
03/06/2014 +56 days 🔍
03/12/2014 +6 days 🔍
08/07/2017 +1244 days 🔍
08/07/2017 +0 days 🔍
08/08/2017 +1 days 🔍
12/15/2022 +1955 days 🔍


Advisory: d266bb2b4154d11c27252b56d86963aef4434750
Researcher: Sebastian Krahmer
Status: Not defined
Confirmation: 🔍

CVE: CVE-2014-1235 (🔍)

X-Force: 90198
SecurityFocus: 64736 - Graphviz 'yyerror()' Function Incomplete Fix Stack Buffer Overflow Vulnerability
OSVDB: 101852 - CVE-2014-1235 - Graphviz - Buffer Overflow Issue

See also: 🔍


Created: 08/08/2017 10:31 AM
Updated: 12/15/2022 09:15 AM
Changes: 08/08/2017 10:31 AM (80), 05/27/2020 12:45 PM (5), 12/15/2022 09:15 AM (5)
Complete: 🔍


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