CVE-2017-6542 is a critical buffer overflow vulnerability in PuTTY before version 0.68, specifically within the ssh_agent_channel_data function, affecting various openSUSE and PuTTY distributions. This flaw allows remote attackers to achieve high impact on confidentiality, integrity, and availability by sending a large length value in an agent protocol message and connecting to the Unix-domain socket of a forwarded agent connection. With a CVSS score of 9.8, it is easily exploitable over the network with low attack complexity and no user interaction required. While not listed on CISA's KEV catalog, an exploit (EDB-42137) is publicly available, though there is no evidence of active exploitation, Metasploit modules, or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 0.67CPE matchmatch criteria | cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:* | ||
42.2CPE matchmatch criteria | cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:* | ||
42.1CPE matchmatch criteria | cpe:2.3:o:opensuse_project:leap:42.1:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.