VDB-101491 · CVE-2017-9073 · BID 98550

Microsoft Windows up to XP SP3/Server 2003 SP2 Remote Desktop Protocol gpkcsp.dll memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows up to XP SP3/Server 2003 SP2. It has been classified as critical. Impacted is an unknown function in the library gpkcsp.dll of the component Remote Desktop Protocol. This manipulation causes memory corruption. This vulnerability is handled as CVE-2017-9073. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Microsoft Windows up to XP SP3/Server 2003 SP2 (Operating System). It has been declared as critical. Affected by this vulnerability is an unknown code block in the library gpkcsp.dll of the component Remote Desktop Protocol. 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. The summary by CVE is:

A buffer overflow in Smart Card authentication code in gpkcsp.dll in Microsoft Windows XP through SP3 and Server 2003 through SP2 allows a remote attacker to execute arbitrary code on the target computer, provided that the computer is joined in a Windows domain and has Remote Desktop Protocol connectivity (or Terminal Services) enabled.

The bug was discovered 04/14/2017. The weakness was released 05/18/2017 by Shadow with Shadow Brokers (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is known as CVE-2017-9073 since 05/18/2017. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/25/2020).

The vulnerability was handled as a non-public zero-day exploit for at least 34 days. During that time the estimated underground price was around $25k-$100k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91367 (Microsoft Windows Remote Code Execution - Shadow Brokers (ESTEEMAUDIT) - Zero Day (Deprecated)).

Upgrading eliminates this vulnerability. Attack attempts may be identified with Snort ID 42255.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 98550†). Entry connected to this vulnerability is available at VDB-102511. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

Video

Youtube: Not available anymore

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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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: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Snort ID: 42255
Snort Message: OS-WINDOWS Microsoft Windows empty RDP cookie negotiation attempt
Snort Class: 🔍

Timelineinfo

04/14/2017 🔍
05/18/2017 +34 days 🔍
05/18/2017 +0 days 🔍
05/18/2017 +0 days 🔍
05/18/2017 +0 days 🔍
05/19/2017 +1 days 🔍
12/25/2020 +1316 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: securityfocus.com⛔
Researcher: Shadow Brokers (Shadow)
Organization: Shadow Brokers
Status: Not defined

CVE: CVE-2017-9073 (🔍)
GCVE (CVE): GCVE-0-2017-9073
GCVE (VulDB): GCVE-100-101491
SecurityFocus: 98550 - Microsoft Windows CVE-2017-9073 Remote Buffer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 05/19/2017 09:12
Updated: 12/25/2020 08:05
Changes: 05/19/2017 09:12 (54), 10/20/2019 17:00 (5), 12/25/2020 08:01 (8), 12/25/2020 08:05 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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