CVE-2019-6111

 

Published at: - 31-01-2019 07:29

Last modified: - 02-08-2022 05:15

Total changes: - 2

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).

Common Vulnerability Scoring System (CVSS)

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

 

Verification logic

 

Reference

• https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
• https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c
• 46193-Exploit, Third Party Advisory, VDB Entry
• 106741-Third Party Advisory, VDB Entry
• USN-3885-1-Third Party Advisory
• DSA-4387-Third Party Advisory
• https://security.netapp.com/advisory/ntap-20190213-0001/
• https://bugzilla.redhat.com/show_bug.cgi?id=1677794
• USN-3885-2-Third Party Advisory
• GLSA-201903-16-Third Party Advisory
• [debian-lts-announce] 20190325 [SECURITY] [DLA 1728-1] openssh security update-Mailing List, Third Party Advisory
• [oss-security] 20190417 Announce: OpenSSH 8.0 released-
• FEDORA-2019-0f4190cdb0-
• [mina-dev] 20190620 [jira] [Created] (SSHD-925) See if SCP vulnerability CVE-2019-6111 applies and mitigate it if so-
• [mina-dev] 20190623 [jira] [Comment Edited] (SSHD-925) See if SCP vulnerability CVE-2019-6111 applies and mitigate it if so-
• [mina-dev] 20190623 [jira] [Commented] (SSHD-925) See if SCP vulnerability CVE-2019-6111 applies and mitigate it if so-
• openSUSE-SU-2019:1602-
• FreeBSD-EN-19:10-
• [mina-dev] 20190820 [jira] [Resolved] (SSHD-925) See if SCP vulnerability CVE-2019-6111 applies and mitigate it if so-
• https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
• RHSA-2019:3702-
• [oss-security] 20220802 CVE-2022-29154: Rsync client-side arbitrary file write vulnerability.-

 

Keywords

NVD

 

CVE-2019-6111

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures