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ClosedXML

latest

See release notes https://github.com/ClosedXML/ClosedXML/releases/tag/0.105.0 ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.

License: Permissive (MIT)

Published:

See on NuGet

SAFE Assessment

Compliance

Licenses

No license compliance issues

Secrets

No sensitive information found

Security

Vulnerabilities

No known vulnerabilities detected

Hardening

No application hardening issues

Threats

Tampering

No evidence of software tampering

Malware

No evidence of malware inclusion

List of software quality issues with the number of affected components.

Policies

Info

Problem

Uniform Resource Locators (URLs) are structured addresses that point to locations and assets on the internet. URLs allow software developers to build complex applications that exchange data with servers that can be hosted in multiple geographical regions. URLs can commonly be found embedded in documentation, configuration files, source code and compiled binaries. One or more embedded URLs were discovered to link to raw files hosted on GitHub. Attackers often abuse popular web services to host malicious payloads. Since code-sharing services URLs are typically allowed by security solutions, using them for payload delivery increases the odds that the malicious code will reach the user. While the presence of code-sharing service locations does not imply malicious intent, all of their uses in a software package should be documented and approved. An increasing number of software supply chain attacks in the open source space leverages the GitHub service to deliver malicious payloads.

Prevalence in NuGet community

22 packages

found in

Top 100

461 packages

found in

Top 1k

3748 packages

found in

Top 10k

62.8k packages

in community

Next steps

Investigate reported detections.

If the software should not include these network references, investigate your build and release environment for software supply chain compromise.

You should delay the software release until the investigation is completed, or until the issue is risk accepted.

Consider an alternative delivery mechanism for software packages.

Problem

Digital signatures are applied to applications, packages and documents as a cryptographically secured authenticity record. Signatures verify the origin and the integrity of the object they apply to. The integrity validation relies on the cryptographic strength of the encryption and the hash verification algorithm. If either of the two is considered weak by current standards, there is a chance the signed object could be maliciously modified, without triggering the integrity failure check.

Prevalence in NuGet community

100 packages

found in

Top 100

899 packages

found in

Top 1k

8997 packages

found in

Top 10k

755.66k packages

in community

Next steps

Create signatures with strong ECC key-length of at least 224 bits, or RSA key-length of at least 2048 bits, and use SHA256 as the hashing algorithm. While encryption key-length upgrade does require you to obtain a new certificate, the hashing algorithm can freely be selected during signing.

With Microsoft SignTool, you can specify the hashing algorithm using the /fd SHA256 parameter.

Problem

Digital signatures are applied to applications, packages and documents as a cryptographically secured authenticity record. Signatures are made using digital certificates, which can either be purchased from certificate authorities or be self-issued. When a certificate is purchased from a certificate authority, the subject that requests it goes through an identity validation process. Depending on the certificate type, those checks can be basic or extended. Confirming the subject identity is a multi-step process, and the requesting subject can be mapped to its legal entity name only through extended validation of submitted documents. Extended identity validation typically costs more, and it takes longer for a certificate to be issued when this process is correctly followed.

Prevalence in NuGet community

100 packages

found in

Top 100

898 packages

found in

Top 1k

8984 packages

found in

Top 10k

754.38k packages

in community

Next steps

Consider the benefits of acquiring extended validation certificates. Operating systems tend to be more trusting of software packages signed in this way. Certain security warnings and prompts might also be automatically suppressed. This reduces the number of support tickets for organizations that opt to use extended validation certificates.

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List of software quality issues with the number of affected components.

Policies

Info

Problem

Prevalence in NuGet community

22 packages

found in

Top 100

461 packages

found in

Top 1k

3748 packages

found in

Top 10k

62.8k packages

in community

Next steps

Investigate reported detections.

If the software should not include these network references, investigate your build and release environment for software supply chain compromise.

You should delay the software release until the investigation is completed, or until the issue is risk accepted.

Consider an alternative delivery mechanism for software packages.

Problem

Prevalence in NuGet community

100 packages

found in

Top 100

899 packages

found in

Top 1k

8997 packages

found in

Top 10k

755.66k packages

in community

Next steps

With Microsoft SignTool, you can specify the hashing algorithm using the /fd SHA256 parameter.

Problem

Prevalence in NuGet community

100 packages

found in

Top 100

898 packages

found in

Top 1k

8984 packages

found in

Top 10k

754.38k packages

in community

ClosedXML

SAFE Assessment

Compliance

Security

Threats

TH17127Detected presence of files containing URLs that link to raw files on GitHub.hunting

Problem

Prevalence in NuGet community

Next steps

SQ20119Detected digital signatures that rely on a weak digest algorithm for integrity validation.signatures

Problem

Prevalence in NuGet community

Next steps

SQ20121Detected digital signatures that have not been performed with an extended validation certificate.signatures

Problem

Prevalence in NuGet community

Next steps

Did you know...

TH17127Detected presence of files containing URLs that link to raw files on GitHub.hunting

Problem

Prevalence in NuGet community

Next steps

SQ20119Detected digital signatures that rely on a weak digest algorithm for integrity validation.signatures

Problem

Prevalence in NuGet community

Next steps

SQ20121Detected digital signatures that have not been performed with an extended validation certificate.signatures

Problem

Prevalence in NuGet community

Next steps