CVE-2019-6111: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-jr78-hfw4-xp7g
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CVSS 5.9
CWE-22
Published
Advisory Summary

CVE-2019-6111 is a MODERATE (CVSS 5.9) security vulnerability vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.. Remediation is available in the latest vendor maintenance releases.

CVE-2019-6111 at a Glance

CVE Identifier CVE-2019-6111
GHSA Identifier GHSA-jr78-hfw4-xp7g
Severity MODERATE
CVSS v3.1 Base Score 5.9
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.9

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

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
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-2019-6111

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-2019-6111, 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. 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

An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file).

References

NVD — CVE-2019-6111 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-6111
Software Security Information SECURITY
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
Software Security Information SECURITY
https://www.freebsd.org/security/advisories/FreeBSD-EN-19:10.scp.asc
www.exploit-db.com/exploits/46193 WEB
https://www.exploit-db.com/exploits/46193
Software Security Information SECURITY
https://www.debian.org/security/2019/dsa-4387
usn.ubuntu.com/3885-2 WEB
https://usn.ubuntu.com/3885-2
usn.ubuntu.com/3885-1 WEB
https://usn.ubuntu.com/3885-1
sintonen.fi/advisories/scp-clie... WEB
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
Software Security Information SECURITY
https://security.netapp.com/advisory/ntap-20190213-0001
Software Security Information SECURITY
https://security.gentoo.org/glsa/201903-16
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
lists.apache.org/thread.html/e475974... WEB
https://lists.apache.org/thread.html/e47597433b351d6e01a5d68d610b4ba195743def9730e49561e8cf3f@%3Cdev.mina.apache.org%3E
lists.apache.org/thread.html/e475974... WEB
https://lists.apache.org/thread.html/e47597433b351d6e01a5d68d610b4ba195743def9730e49561e8cf3f%40%3Cdev.mina.apache.org%3E
lists.apache.org/thread.html/d540139... WEB
https://lists.apache.org/thread.html/d540139359de999b0f1c87d05b715be4d7d4bec771e1ae55153c5c7a@%3Cdev.mina.apache.org%3E
lists.apache.org/thread.html/d540139... WEB
https://lists.apache.org/thread.html/d540139359de999b0f1c87d05b715be4d7d4bec771e1ae55153c5c7a%40%3Cdev.mina.apache.org%3E
lists.apache.org/thread.html/c7301ca... WEB
https://lists.apache.org/thread.html/c7301cab36a86825359e1b725fc40304d1df56dc6d107c1fe885148b@%3Cdev.mina.apache.org%3E
lists.apache.org/thread.html/c7301ca... WEB
https://lists.apache.org/thread.html/c7301cab36a86825359e1b725fc40304d1df56dc6d107c1fe885148b%40%3Cdev.mina.apache.org%3E
lists.apache.org/thread.html/c45d9bc... WEB
https://lists.apache.org/thread.html/c45d9bc90700354b58fb7455962873c44229841880dcb64842fa7d23@%3Cdev.mina.apache.org%3E
lists.apache.org/thread.html/c45d9bc... WEB
https://lists.apache.org/thread.html/c45d9bc90700354b58fb7455962873c44229841880dcb64842fa7d23%40%3Cdev.mina.apache.org%3E
cvsweb.openbsd.org/src/usr.bin/ssh/scp... WEB
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c
cert-portal.siemens.com/productcert/pdf/ssa... WEB
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-412672.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=1677794
access.redhat.com/errata/rhsa-2019:37... WEB
https://access.redhat.com/errata/RHSA-2019:3702
Software Security Information SECURITY
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2019/04/18/1
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/08/02/1
Software Security Information SECURITY
http://www.securityfocus.com/bid/106741

Frequently Asked Questions

What is CVE-2019-6111?
CVE-2019-6111 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2019-6111?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2019-6111?
CVE-2019-6111 has a CVSS v3.1 base score of 5.9 (MODERATE) with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2019-6111?
CVE-2019-6111 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Maven dependencies for CVE-2019-6111?
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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}