CVE-2017-17847: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-c53x-x7fc-9vrp
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CVSS 7.5
CWE-347
Published
Advisory Summary

CVE-2017-17847 is a HIGH (CVSS 7.5) security vulnerability vulnerability (CWE-347: Improper Verification of Cryptographic Signature) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not verify, or incorrectly verifies, the cryptographic signature for data.. Remediation is available in the latest vendor maintenance releases.

CVE-2017-17847 at a Glance

CVE Identifier CVE-2017-17847
GHSA Identifier GHSA-c53x-x7fc-9vrp
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-347: Improper Verification of Cryptographic Signature
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2017-17847

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2017-17847, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & RFC 5280 Specification

Under RFC 5280 specifications for X.509 certificates, the Name Constraints extension defines a namespace within which all subsequent subject names in a certification path must be located. Constraints apply to various name forms including directory names, IP addresses, rfc822Name (email addresses), and uniformResourceIdentifier (URI) entries. Specifically, during certificate path validation, affected versions of Software failed to properly normalize or enforce boundary checks when domain names contained trailing dot (.) characters. Because domain names with a trailing dot signify fully qualified domain names (FQDNs), this omission allowed non-conforming certificates to be improperly validated as compliant with the defined name constraints.

Source Advisory Statement

An issue was discovered in Enigmail before 1.9.9. Signature spoofing is possible because the UI does not properly distinguish between an attachment signature, and a signature that applies to the entire containing message, aka TBE-01-021. This is demonstrated by an e-mail message with an attachment that is a signed e-mail message in message/rfc822 format.

References

NVD — CVE-2017-17847 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-17847
enigmail.net/download/other/enig... WEB
https://enigmail.net/download/other/Enigmail%20Pentest%20Report%20by%20Cure53%20-%20Excerpt.pdf
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2017/12/msg00021.html
Software Security Information SECURITY
https://lists.debian.org/debian-security-announce/2017/msg00333.html
sourceforge.net/p/enigmail/bugs/709 WEB
https://sourceforge.net/p/enigmail/bugs/709
Software Security Information SECURITY
https://www.debian.org/security/2017/dsa-4070
www.mail-archive.com/enigmail-users@enig... WEB
https://www.mail-archive.com/enigmail-users%40enigmail.net/msg04280.html
www.mail-archive.com/enigmail-users@enig... WEB
https://www.mail-archive.com/enigmail-users@enigmail.net/msg04280.html

Frequently Asked Questions

What is CVE-2017-17847?
CVE-2017-17847 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-347: Improper Verification of Cryptographic Signature.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2017-17847?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2017-17847?
CVE-2017-17847 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2017-17847?
CVE-2017-17847 is classified under CWE-347: Improper Verification of Cryptographic Signature (The product does not verify, or incorrectly verifies, the cryptographic signature for data.).
How can I check Maven dependencies for CVE-2017-17847?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
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  "schema_version" : "1.4.0",
  "id" : "GHSA-c53x-x7fc-9vrp",
  "modified" : "2025-04-20T03:50:29Z",
  "published" : "2022-05-14T03:46:15Z",
  "aliases" : [ "CVE-2017-17847" ],
  "details" : "An issue was discovered in Enigmail before 1.9.9. Signature spoofing is possible because the UI does not properly distinguish between an attachment signature, and a signature that applies to the entire containing message, aka TBE-01-021. This is demonstrated by an e-mail message with an attachment that is a signed e-mail message in message/rfc822 format.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
  } ],
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  "references" : [ {
    "type" : "ADVISORY",
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  }, {
    "type" : "WEB",
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  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2017/12/msg00021.html"
  }, {
    "type" : "WEB",
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  }, {
    "type" : "WEB",
    "url" : "https://sourceforge.net/p/enigmail/bugs/709"
  }, {
    "type" : "WEB",
    "url" : "https://www.debian.org/security/2017/dsa-4070"
  }, {
    "type" : "WEB",
    "url" : "https://www.mail-archive.com/enigmail-users%40enigmail.net/msg04280.html"
  }, {
    "type" : "WEB",
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  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-347" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2017-12-27T17:08:00Z"
  }
}