PuTTY up to 0.72 SSH-1 SSH1_MSG_DISCONNECT Message input validation

Summaryinfo

A vulnerability labeled as problematic has been found in PuTTY up to 0.72. Impacted is an unknown function of the component SSH-1 Handler. Such manipulation as part of SSH1_MSG_DISCONNECT Message leads to input validation. This vulnerability is documented as CVE-2019-17069. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in PuTTY up to 0.72 (Connectivity Software). Affected by this issue is an unknown part of the component SSH-1 Handler. The manipulation as part of a SSH1_MSG_DISCONNECT Message leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

PuTTY before 0.73 might allow remote SSH-1 servers to cause a denial of service by accessing freed memory locations via an SSH1_MSG_DISCONNECT message.

The weakness was released 10/01/2019 (Website). The advisory is shared for download at lists.opensuse.org. This vulnerability is handled as CVE-2019-17069 since 10/01/2019. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 0.73 eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-142794 and VDB-142795. Once again VulDB remains the best source for vulnerability data.

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
• 0.71
• 0.72

License

• open-source

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

• 🔍
• 🔍
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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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