Canonical Ubuntu Linux 12.04 vfprintf numeric error

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability has been found in Canonical Ubuntu Linux 12.04 (Operating System) and classified as critical. Affected by this vulnerability is the function vfprintf. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect availability. The summary by CVE is:

The vfprintf function in stdio-common/vfprintf.c in libc in GNU C Library (aka glibc) 2.12 and other versions does not properly calculate a buffer length, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (stack corruption and crash) via a format string that uses positional parameters and many format specifiers.

The weakness was disclosed 02/10/2014 by Stefan Cornelius as Bug 12445 as confirmed bug report (Bugzilla). The advisory is shared at This vulnerability is known as CVE-2012-3404 since 06/14/2012. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 69599 (Amazon Linux AMI : glibc (ALAS-2012-109)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 216049 (VMWare ESXi 5.1.0 Patch Complete Update 1 Missing (KB2041632)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (69599).







CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
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Class: Numeric error
CWE: CWE-189

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 69599
Nessus Name: Amazon Linux AMI : glibc (ALAS-2012-109)
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OpenVAS ID: 881067
OpenVAS Name: CentOS Update for glibc CESA-2012:1098 centos6
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Threat Intelligenceinfo

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Recommended: no mitigation known
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06/14/2012 🔍
07/11/2012 +27 days 🔍
07/11/2012 +0 days 🔍
09/19/2012 +70 days 🔍
09/04/2013 +350 days 🔍
02/10/2014 +159 days 🔍
02/10/2014 +0 days 🔍
03/25/2015 +408 days 🔍
03/11/2022 +2543 days 🔍


Advisory: Bug 12445
Researcher: Stefan Cornelius
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-3404 (🔍)

Vulnerability Center: 36164 - GNU glibc Formatted Printing Functionality Memory Allocation Flaw Allows DoS \\ Security Bypass, Medium
SecurityFocus: 54374 - GNU glibc Formatted Printing Functionality Multiple Security Vulnerabilities


Created: 03/25/2015 04:45 PM
Updated: 03/11/2022 06:13 AM
Changes: 03/25/2015 04:45 PM (64), 04/17/2017 11:01 AM (11), 03/11/2022 06:13 AM (3)
Complete: 🔍
Cache ID: 44:102:40


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