Summaryinfo

A vulnerability classified as critical has been found in PuTTY up to 0.70. Affected by this issue is some unknown functionality of the component Random Number Generator. The manipulation leads to risky encryption. This vulnerability is traded as CVE-2019-9898. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Detailsinfo

A vulnerability was found in PuTTY up to 0.70 (Connectivity Software) and classified as critical. This issue affects some unknown processing of the component Random Number Generator. The manipulation with an unknown input leads to a risky encryption vulnerability. Using CWE to declare the problem leads to CWE-327. The product uses a broken or risky cryptographic algorithm or protocol. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Potential recycling of random numbers used in cryptography exists within PuTTY before 0.71.

The bug was discovered 04/01/2019. The weakness was shared 03/21/2019 (Website). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2019-9898 since 03/20/2019. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 371709 (Putty Multiple Security Vulnerabilities).

Upgrading to version 0.71 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 107523†). The entries VDB-132085, VDB-132086, VDB-132087 and VDB-132088 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Connectivity Software

Name

• PuTTY

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31
• 0.32
• 0.33
• 0.34
• 0.35
• 0.36
• 0.37
• 0.38
• 0.39
• 0.40
• 0.41
• 0.42
• 0.43
• 0.44
• 0.45
• 0.46
• 0.47
• 0.48
• 0.49
• 0.50
• 0.51
• 0.52
• 0.53
• 0.54
• 0.55
• 0.56
• 0.57
• 0.58
• 0.59
• 0.60
• 0.61
• 0.62
• 0.63
• 0.64
• 0.65
• 0.66
• 0.67
• 0.68
• 0.69
• 0.70

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
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