PT-2019-6423 · Simon Tatham+2 · Putty+2

Published 2019-09-30 · Updated 2024-06-15 · CVE-2019-17069

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions PuTTY versions prior to 0.73

Description The issue is related to accessing freed memory locations, which could allow remote SSH-1 servers to cause a denial of service. This can be achieved via an SSH1 MSG DISCONNECT message. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.

Recommendations For versions prior to 0.73, update to version 0.73 or later to resolve the issue. As a temporary workaround, consider restricting access to SSH-1 servers to minimize the risk of exploitation. Avoid using the SSH1 MSG DISCONNECT message in the affected API endpoint until the issue is resolved.

Fix

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2019-2805

ALT-PU-2021-1860

ALT-PU-2023-4867

BDU:2024-04046

CVE-2019-17069

DLA-3794-1

MGASA-2020-0003

OPENSUSE-SU-2019:2276-1

OPENSUSE-SU-2019:2277-1

OPENSUSE-SU-2019:2292-1

OPENSUSE-SU-2019_2276-1

OPENSUSE-SU-2019_2277-1

OPENSUSE-SU-2024:11201-1

Affected Products

Alt Linux

Putty

Suse

References · 35

• https://osv.dev/vulnerability/ALPINE-CVE-2019-17069 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00030.html · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00020.html · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:2292-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-17069 · Security Note
• https://advisories.mageia.org/MGASA-2020-0003.html · Security Note
• https://ubuntu.com/security/CVE-2019-17069 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3794-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:2277-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11201-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00021.html · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-17069 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-17069 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-17069 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-04046 · Security Note