Denial of Service Vulnerability in PuTTY by VanDyke Software
CVE-2019-17069

7.5HIGH

Key Information:

Vendor

Putty

Status
Putty
Vendor
CVE Published:
1 October 2019

What is CVE-2019-17069?

A vulnerability in PuTTY prior to version 0.73 allows remote SSH-1 servers to trigger a denial of service condition. This exploit is realized when a malicious SSH-1 server sends an SSH1_MSG_DISCONNECT message, which can cause PuTTY to access freed memory locations, potentially leading to application instability and crashes. Users of affected versions are advised to upgrade to safeguard against this risk.

References

https://lists.tartarus.org/pipermail/putty-announce/2019/...
http://lists.opensuse.org/opensuse-security-announce/2019...
vendor-advisory
http://lists.opensuse.org/opensuse-security-announce/2019...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.