CVE-2020-15216— Signature Validation Bypass in goxmldsig
Quick assessment
Affected
russellhaering goxmldsig
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
goxmldsig是个人开发者的一个Go语言编写的数字签名库。该库继承了 SAML2.0，不需要命令行工具即可进行签名的生成和验证功能。 goxmldsig (XML Digital Signatures implemented in pure Go) 1.1.0之前版本存在数据伪造问题漏洞，该漏洞允许攻击者可以完全绕过签名验证，并将经过更改的文件作为签名文件传递出去。
Possible ATT&CK Techniques 1 AI
T1553 · Subvert Trust Controls
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I. Basic Information for CVE-2020-15216
Vulnerability Information
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Vulnerability Title
Signature Validation Bypass in goxmldsig
Source: CVE Program / CVE List V5
Vulnerability Description
In goxmldsig (XML Digital Signatures implemented in pure Go) before version 1.1.0, with a carefully crafted XML file, an attacker can completely bypass signature validation and pass off an altered file as a signed one. A patch is available, all users of goxmldsig should upgrade to at least revision f6188febf0c29d7ffe26a0436212b19cb9615e64 or version 1.1.0
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
goxmldsig 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
goxmldsig是个人开发者的一个Go语言编写的数字签名库。该库继承了 SAML2.0，不需要命令行工具即可进行签名的生成和验证功能。 goxmldsig (XML Digital Signatures implemented in pure Go) 1.1.0之前版本存在数据伪造问题漏洞，该漏洞允许攻击者可以完全绕过签名验证，并将经过更改的文件作为签名文件传递出去。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| russellhaering | goxmldsig | < 1.1.0 | - |
|
II. Public POCs for CVE-2020-15216
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2020-15216 (1)
Vendor Advisories for CVE-2020-15216 (1)
Mailing List Discussions for CVE-2020-15216 (2)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZECBFD4M4PHBMBOCMSQ537NOU37QOVWP/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUH33FPUXED3FHYL25BJOQPRKFGPOMS2/ vendor-advisory x_refsource_FEDORA
Other References for CVE-2020-15216 (1)
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https://pkg.go.dev/github.com/russellhaering/goxmldsig?tab=overview x_refsource_MISC
IV. Related Vulnerabilities
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V. Comments for CVE-2020-15216
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