CA BrightStor ARCserve Backup up to r11.5 Backup Agent dbasvr.exe memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in CA BrightStor ARCserve Backup up to r11.5. The affected element is an unknown function in the library ascore.dll of the file dbasvr.exe of the component Backup Agent. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2006-5143. Moreover, an exploit is present. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in CA BrightStor ARCserve Backup up to r11.5 (Backup Software). It has been declared as critical. This vulnerability affects an unknown code block in the library ascore.dll of the file dbasvr.exe of the component Backup Agent. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Multiple buffer overflows in CA BrightStor ARCserve Backup r11.5 SP1 and earlier, r11.1, and 9.01; BrightStor ARCserve Backup for Windows r11; BrightStor Enterprise Backup 10.5; Server Protection Suite r2; and Business Protection Suite r2 allow remote attackers to execute arbitrary code via crafted data on TCP port 6071 to the Backup Agent RPC Server (DBASVR.exe) using the RPC routines with opcode (1) 0x01, (2) 0x02, or (3) 0x18; invalid stub data on TCP port 6503 to the RPC routines with opcode (4) 0x2b or (5) 0x2d in ASCORE.dll in the Message Engine RPC Server (msgeng.exe); (6) a long hostname on TCP port 41523 to ASBRDCST.DLL in the Discovery Service (casdscsvc.exe); or unspecified vectors related to the (7) Job Engine Service.

The weakness was disclosed 10/10/2006 as confirmed advisory (CERT.org). The advisory is shared for download at kb.cert.org. This vulnerability was named CVE-2006-5143 since 10/02/2006. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

A public exploit has been developed in ANSI C. It is possible to download the exploit at securityfocus.com. It is declared as highly functional. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 22511 (CA BrightStor ARCserve Backup DBASVR for Windows Multiple Remote Buffer Overflows), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38571 (CA (Computer Associates) BrightStor ARCserve Backup Remote Buffer Overflow Vulnerability).

Applying a patch is able to eliminate this problem. A possible mitigation has been published before and not just after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 4268.

The vulnerability is also documented in the databases at X-Force (29364), Tenable (22511), SecurityFocus (BID 20365†), OSVDB (29535†) and Secunia (SA22285†). The entry VDB-32631 is pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 22511
Nessus Name: CA BrightStor ARCserve Backup DBASVR for Windows Multiple Remote Buffer Overflows
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Saint ID: exploit_info/brightstor_arcserve_ascore
Saint Name: BrightStor ARCserve Message Engine RPC server buffer overflow

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: message_engine_heap.rb
MetaSploit Name: CA BrightStor ARCserve Message Engine Heap Overflow
MetaSploit File: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

SourceFire IPS: 🔍
ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

10/02/2006 🔍
10/05/2006 +3 days 🔍
10/05/2006 +0 days 🔍
10/05/2006 +0 days 🔍
10/06/2006 +1 days 🔍
10/06/2006 +0 days 🔍
10/10/2006 +4 days 🔍
10/10/2006 +0 days 🔍
10/10/2006 +0 days 🔍
03/12/2015 +3075 days 🔍
04/23/2026 +4060 days 🔍

Sourcesinfo

Vendor: ca.com

Advisory: kb.cert.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-5143 (🔍)
GCVE (CVE): GCVE-0-2006-5143
GCVE (VulDB): GCVE-100-32632
CERT: 🔍
X-Force: 29364
SecurityFocus: 20365 - Computer Associates Products Message Engine RPC Server Multiple Buffer Overflow Vulnerabilities
Secunia: 22285
OSVDB: 29535 - CA Multiple Products ASCORE.dll Long String Remote Overflow
SecurityTracker: 1017003
Vulnerability Center: 12869 - Multiple Computer Associates Products Buffer Overflow in DABSVR.exe, Critical
Vupen: ADV-2006-3930

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

Entryinfo

Created: 03/12/2015 15:51
Updated: 04/23/2026 18:28
Changes: 03/12/2015 15:51 (84), 07/09/2019 08:57 (13), 01/14/2025 16:49 (17), 06/16/2025 01:47 (2), 04/23/2026 18:28 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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