CVE-2017-12855: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-c6pm-8crm-3rr8
Share
CVSS 6.5
CWE-200
Published
Advisory Summary

CVE-2017-12855 is a MODERATE (CVSS 6.5) security vulnerability vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.. Remediation is available in the latest vendor maintenance releases.

CVE-2017-12855 at a Glance

CVE Identifier CVE-2017-12855
GHSA Identifier GHSA-c6pm-8crm-3rr8
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.5

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

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

How to Fix CVE-2017-12855

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-2017-12855, 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 & Technical Analysis

This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Xen maintains the _GTF_{read,writ}ing bits as appropriate, to inform the guest that a grant is in use. A guest is expected not to modify the grant details while it is in use, whereas the guest is free to modify/reuse the grant entry when it is not in use. Under some circumstances, Xen will clear the status bits too early, incorrectly informing the guest that the grant is no longer in use. A guest may prematurely believe that a granted frame is safely private again, and reuse it in a way which contains sensitive information, while the domain on the far end of the grant is still using the grant. Xen 4.9, 4.8, 4.7, 4.6, and 4.5 are affected.

References

NVD — CVE-2017-12855 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-12855
support.citrix.com/article/ctx225941 WEB
https://support.citrix.com/article/CTX225941
Software Security Information SECURITY
http://www.debian.org/security/2017/dsa-3969
Software Security Information SECURITY
http://www.securityfocus.com/bid/100341
Software Security Information SECURITY
http://www.securitytracker.com/id/1039177
xenbits.xen.org/xsa/advisory-230.ht... WEB
http://xenbits.xen.org/xsa/advisory-230.html

Frequently Asked Questions

What is CVE-2017-12855?
CVE-2017-12855 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2017-12855?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2017-12855?
CVE-2017-12855 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
What CWE is associated with CVE-2017-12855?
CVE-2017-12855 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check Maven dependencies for CVE-2017-12855?
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 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-c6pm-8crm-3rr8",
  "modified" : "2022-05-17T00:24:10Z",
  "published" : "2022-05-17T00:24:10Z",
  "aliases" : [ "CVE-2017-12855" ],
  "details" : "Xen maintains the _GTF_{read,writ}ing bits as appropriate, to inform the guest that a grant is in use. A guest is expected not to modify the grant details while it is in use, whereas the guest is free to modify/reuse the grant entry when it is not in use. Under some circumstances, Xen will clear the status bits too early, incorrectly informing the guest that the grant is no longer in use. A guest may prematurely believe that a granted frame is safely private again, and reuse it in a way which contains sensitive information, while the domain on the far end of the grant is still using the grant. Xen 4.9, 4.8, 4.7, 4.6, and 4.5 are affected.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-12855"
  }, {
    "type" : "WEB",
    "url" : "https://support.citrix.com/article/CTX225941"
  }, {
    "type" : "WEB",
    "url" : "http://www.debian.org/security/2017/dsa-3969"
  }, {
    "type" : "WEB",
    "url" : "http://www.securityfocus.com/bid/100341"
  }, {
    "type" : "WEB",
    "url" : "http://www.securitytracker.com/id/1039177"
  }, {
    "type" : "WEB",
    "url" : "http://xenbits.xen.org/xsa/advisory-230.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2017-08-15T16:29:00Z"
  }
}