PuTTY 0.64 ssh dh Group Exchange denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in PuTTY 0.64. The affected element is an unknown function of the component ssh dh Group Exchange Handler. Such manipulation leads to denial of service. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in PuTTY 0.64 (Connectivity Software). It has been rated as problematic. Affected by this issue is an unknown function of the component ssh dh Group Exchange Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was published 06/15/2015 as File 132319 (Packetstorm). The advisory is available at packetstormsecurity.com. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

After immediately, there has been an exploit disclosed. The exploit is available at exploit-db.com. It is declared as proof-of-concept. The code used by the exploit is:

dh_gex_reply_msg = '\x00\x00\x02\x3c' ## pl
dh_gex_reply_msg += '\x09' ## padding len
dh_gex_reply_msg += '\x21' ## dh gex reply
dh_gex_reply_msg += '\x00\x00\xff\xff' ## dh host key len
dh_gex_reply_msg += 'A'*600
 
client.sendall(dh_gex_reply_msg)

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 databases at X-Force (103850) and Exploit-DB (37291). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

06/15/2015 🔍
06/15/2015 +0 days 🔍
06/16/2015 +1 days 🔍
09/23/2018 +1195 days 🔍

Sourcesinfo

Advisory: File 132319
Status: Not defined

GCVE (VulDB): GCVE-100-75950
X-Force: 103850 - PuTTY SSH denial of service

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

Entryinfo

Created: 06/16/2015 11:50
Updated: 09/23/2018 08:48
Changes: 06/16/2015 11:50 (42), 09/23/2018 08:48 (4)
Complete: 🔍
Cache ID: 216:587:103

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