PT-2019-5477 · Simon Tatham+1 · Putty+1

Published 2019-03-21 · Updated 2019-05-07 · CVE-2019-9895

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions PuTTY versions prior to 0.71

Description The issue is related to a buffer overflow in the cryptographic protection tool PuTTY, which can be triggered remotely. This can allow an attacker to impact the confidentiality, integrity, and availability of protected information. The buffer overflow exists in server-to-client forwarding on Unix systems.

Recommendations For PuTTY versions prior to 0.71, update to version 0.71 or later to resolve the issue. As a temporary workaround, consider restricting the use of server-to-client forwarding until a patch is available.

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2020-03216

CVE-2019-9895

DSA-4423-1

MGASA-2019-0153

OPENSUSE-SU-2019:1113-1

OPENSUSE-SU-2019:1123-1

OPENSUSE-SU-2019_1113-1

Affected Products

Putty

Suse

References · 37

• https://osv.dev/vulnerability/openSUSE-SU-2019:1113-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-9895 · Security Note
• https://osv.dev/vulnerability/DSA-4423-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-9895 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/36LWQ3NPFIV7DC7TC4KFPRYRH2OR7SZ2 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36LWQ3NPFIV7DC7TC4KFPRYRH2OR7SZ2 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-9895 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/LDO3F267P347E6U2IILFCYW7JPTLCCES · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-9895 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0153 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-03216 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2019:1123-1 · Vendor Advisory
• https://debian.org/security/2019/dsa-4423 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2019-0153.html · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-9895 · Vendor Advisory