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CVE-2019-6111 Detail

Description

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).


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  5.9 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html Broken Link 
http://www.openwall.com/lists/oss-security/2019/04/18/1 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2022/08/02/1 Mailing List  Third Party Advisory 
http://www.securityfocus.com/bid/106741 Broken Link  Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2019:3702 Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=1677794 Exploit  Issue Tracking  Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf Third Party Advisory 
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c Release Notes 
https://lists.apache.org/thread.html/c45d9bc90700354b58fb7455962873c44229841880dcb64842fa7d23%40%3Cdev.mina.apache.org%3E
https://lists.apache.org/thread.html/c7301cab36a86825359e1b725fc40304d1df56dc6d107c1fe885148b%40%3Cdev.mina.apache.org%3E
https://lists.apache.org/thread.html/d540139359de999b0f1c87d05b715be4d7d4bec771e1ae55153c5c7a%40%3Cdev.mina.apache.org%3E
https://lists.apache.org/thread.html/e47597433b351d6e01a5d68d610b4ba195743def9730e49561e8cf3f%40%3Cdev.mina.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G/
https://security.gentoo.org/glsa/201903-16 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20190213-0001/ Third Party Advisory 
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt Third Party Advisory 
https://usn.ubuntu.com/3885-1/ Third Party Advisory 
https://usn.ubuntu.com/3885-2/ Third Party Advisory 
https://www.debian.org/security/2019/dsa-4387 Third Party Advisory 
https://www.exploit-db.com/exploits/46193/ Exploit  Third Party Advisory  VDB Entry 
https://www.freebsd.org/security/advisories/FreeBSD-EN-19:10.scp.asc Third Party Advisory 
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

25 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-6111
NVD Published Date:
01/31/2019
NVD Last Modified:
11/06/2023
Source:
MITRE