Microsoft Office Excel 2003/2007/2010 SerAuxErrBar File memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Microsoft Office Excel 2003/2007/2010 and classified as critical. This vulnerability affects the function SerAuxErrBar. Performing a manipulation as part of File results in memory corruption. This vulnerability was named CVE-2012-1885. In addition, an exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Microsoft Office Excel 2003/2007/2010 (Office Suite Software). This affects the function SerAuxErrBar. The manipulation as part of a File leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Heap-based buffer overflow in Microsoft Excel 2003 SP3, 2007 SP2 and SP3, and 2010 SP1; Office 2008 and 2011 for Mac; and Office Compatibility Pack SP2 and SP3 allows remote attackers to execute arbitrary code via a crafted spreadsheet, aka "Excel SerAuxErrBar Heap Overflow Vulnerability."

The issue has been introduced in 11/17/2003. The weakness was presented 11/13/2012 by Sean Larsson (iDefense) with iDEFENSE Labs as MS12-076 as confirmed bulletin (Microsoft Technet). The advisory is shared at technet.microsoft.com. The public release was coordinated in cooperation with Microsoft. This vulnerability is uniquely identified as CVE-2012-1885 since 03/22/2012. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a private exploit are known.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 3284 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 62909 (MS12-076: Vulnerabilities in Microsoft Excel Could Allow Remote Code Execution (2720184) (Mac OS X)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 110195 (Microsoft Excel Remote Code Execution Vulnerabilities (MS12-076)).

Applying the patch MS12-076 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 12647.

The vulnerability is also documented in the databases at X-Force (78075), Tenable (62909), SecurityFocus (BID 56425†), OSVDB (87270†) and Secunia (SA51242†). See VDB-6934, VDB-6935 and VDB-62914 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.0

VulDB Base Score: 10.0
VulDB Temp Score: 9.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 62909
Nessus Name: MS12-076: Vulnerabilities in Microsoft Excel Could Allow Remote Code Execution (2720184) (Mac OS X)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 902930
OpenVAS Name: Microsoft Office Remote Code Execution Vulnerabilities (2720184)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS12-076
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

11/17/2003 🔍
03/22/2012 +3048 days 🔍
11/08/2012 +231 days 🔍
11/13/2012 +5 days 🔍
11/13/2012 +0 days 🔍
11/13/2012 +0 days 🔍
11/13/2012 +0 days 🔍
11/13/2012 +0 days 🔍
11/13/2012 +0 days 🔍
11/14/2012 +1 days 🔍
11/14/2012 +0 days 🔍
11/15/2012 +1 days 🔍
04/19/2021 +3077 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS12-076
Researcher: Sean Larsson (iDefense)
Organization: iDEFENSE Labs
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2012-1885 (🔍)
GCVE (CVE): GCVE-0-2012-1885
GCVE (VulDB): GCVE-100-6933

OVAL: 🔍
IAVM: 🔍

X-Force: 78075
SecurityFocus: 56425 - Microsoft Excel 'SerAuxErrBar' Heap Overflow Remote Code Execution Vulnerability
Secunia: 51242 - Microsoft Office Excel Multiple Vulnerabilities, Highly Critical
OSVDB: 87270
SecurityTracker: 1027752 - Microsoft Excel Buffer Overflow, Memory Corruption, and Use-After-Free Errors Let Remote Users Execute Arbitrary Code
Vulnerability Center: 37229 - [MS12-076] Microsoft Excel and Office Heap-Based Buffer Overflow Allows Remote Code Execution, Critical

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 11/15/2012 17:02
Updated: 04/19/2021 11:09
Changes: 11/15/2012 17:02 (98), 04/21/2017 11:30 (8), 04/19/2021 11:09 (2)
Complete: 🔍
Committer:
Cache ID: 216:37A:103

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