Novell Client 4.91 nwspool.dll enumprinters memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.4	$0-$5k	0.00

A vulnerability classified as very critical was found in Novell Client 4.91. This vulnerability affects the function enumprinters in the library nwspool.dll. 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:

Stack-based buffer overflow in the EnumPrinters function in the Spooler service (nwspool.dll) in Novell Client 4.91 SP2, SP3, and SP4 for Windows allows remote attackers to execute arbitrary code via a crafted RPC request, aka Novell bug 353138, a different vulnerability than CVE-2006-5854. NOTE: this issue exists because of an incomplete fix for CVE-2007-6701.

The bug was discovered 02/11/2008. The weakness was disclosed 02/13/2008 (Website). The advisory is shared for download at zerodayinitiative.com. This vulnerability was named CVE-2008-0639 since 02/06/2008. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/06/2019). It is expected to see the exploit prices for this product decreasing in the near future.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $25k-$100k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 5262.

The vulnerability is also documented in the vulnerability database at X-Force (40431). The entry 41031 is pretty similar.

Productinfo

Vendor

Novell

Name

Client

Version

4.91

License

commercial

Support

end of life

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.4

VulDB Base Score: 10.0
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Saint ID: exploit_info/novell_client_nwspool_enumprinters
Saint Name: Novell Client nwspool.dll EnumPrinters buffer overflow

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

SourceFire IPS: 🔍
ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
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Timelineinfo

02/06/2008 🔍
02/11/2008 +5 days 🔍
02/11/2008 +0 days 🔍
02/11/2008 +0 days 🔍
02/12/2008 +1 days 🔍
02/13/2008 +1 days 🔍
02/13/2008 +0 days 🔍
03/02/2008 +18 days 🔍
03/16/2015 +2570 days 🔍
08/06/2019 +1604 days 🔍

Sourcesinfo

Vendor: novell.com

Advisory: zerodayinitiative.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-0639 (🔍)
X-Force: 40431
SecurityTracker: 1019366
Vulnerability Center: 17747 - Novell Client 4.91 SP2-SP4 for Windows Spooler Service Stack-Based Buffer Overflow, Critical
SecurityFocus: 27741 - Novell Client 'nwspool.dll' EnumPrinters RPC Request Buffer Overflow Vulnerability
Secunia: 28895
OSVDB: 41510 - Novell - Client - 'nwspool.dll' EnumPrinters RPC Request Buffer Overflow Issue
Vupen: ADV-2008-0496

See also: 🔍

Entryinfo

Created: 03/16/2015 13:43
Updated: 08/06/2019 07:28
Changes: 03/16/2015 13:43 (70), 08/06/2019 07:28 (11)
Complete: 🔍