CVE-2019-6110

Description

In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred.

CVSS breakdown

Affected products

• NetApp / element_software
• NetApp / ontap_select_deploy
• NetApp / storage_automation_store
• OpenBSD / OpenSSH7.9
• Siemens / scalance_x204rna_eec_firmware3.2.7
• Siemens / scalance_x204rna_firmware3.2.7
• winscp / winscp5.13

Exploits & proofs of concept

• exploit-dbSCP Client - Multiple Vulnerabilities (SSHtranger Things)by Mark E. Haase
• exploit-dbOpenSSH SCP Client - Write Arbitrary Filesby Harry Sintonen

References

• MISChttps://security.netapp.com/advisory/ntap-20190213-0001/
• MISChttps://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c
• MISChttps://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c
• VENDOR_ADVISORYhttps://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
• EXPLOIThttps://www.exploit-db.com/exploits/46193/
• MISChttps://security.gentoo.org/glsa/201903-16
• MISChttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf