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CVE-2019-6109

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Date: January 30, 2019

An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.

Language: Python

Severity Score

Related Resources (20)

https://security.netapp.com/advisory/ntap-20190213-0001/
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://nvd.nist.gov/vuln/detail/CVE-2019-6109
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G/
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
https://usn.ubuntu.com/3885-1/
https://security-tracker.debian.org/tracker/CVE-2019-6109
https://security.gentoo.org/glsa/201903-16
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G/
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c
https://access.redhat.com/security/cve/CVE-2019-6109
https://security.alpinelinux.org/vuln/CVE-2019-6109
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c
https://www.debian.org/security/2019/dsa-4387
https://access.redhat.com/errata/RHSA-2019:3702
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-6109
https://www.mend.io/vulnerability-database/CVE-2019-6109

Severity Score

Weakness Type (CWE)

Improper Access Control

CWE-284

Improper Encoding or Escaping of Output

CWE-116

Top Fix

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Upgrade to version openssh - 8.0p1-1;openssh - 8.2p1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): HIGH
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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