CVE catalog
CVE-2017-6542
putty: CVE-2017-6542
- Severity
- Critical · CVSS 9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 21.82% · Oct 25, 2026
The ssh_agent_channel_data function in PuTTY before 0.68 allows remote attackers to have unspecified impact via a large length value in an agent protocol message and leveraging the ability to connect to the Unix-domain socket representing the forwarded agent connection, which trigger a buffer overflow.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | putty | sid | 0.85-3 | fixed |
| Debian | putty | forky | 0.85-3 | fixed |
| Debian | putty | trixie | 0.83-3 | fixed |
| Debian | putty | bookworm | 0.78-2+deb12u2 | fixed |
| Debian | putty | bookworm-security | 0.78-2+deb12u1 | fixed |
| Alpine | putty | 3.2 | 0.68-r0 | fixed |
| Alpine | putty | 3.3 | 0.68-r0 | fixed |
| Alpine | putty | 3.4 | 0.68-r0 | fixed |
| Alpine | putty | 3.5 | 0.68-r0 | fixed |
| Opensuse | putty | tumbleweed | 0.76-1.2 | fixed |
| Ubuntu | putty | 16.04 | 0.65-2 | vulnerable |
| Ubuntu | putty | 16.04 | 0.66-1 | vulnerable |
| Ubuntu | putty | 16.04 | 0.66-2 | vulnerable |
| Ubuntu | putty | 16.04 | 0.66-3 | vulnerable |
| Ubuntu | putty | 16.04 | 0.66-4 | vulnerable |
| Ubuntu | putty | 16.04 | 0.67-1 | vulnerable |
| Ubuntu | putty | 16.04 | 0.67-2 | vulnerable |
| Ubuntu | putty | 16.04 | 0.67-3build0.16.04.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | putty | source | sid | 0.67-3 | not yet assigned | Not reported | [857642] |
| Debian | putty | source | forky | 0.67-3 | not yet assigned | Not reported | [857642] |
| Debian | putty | source | trixie | 0.67-3 | not yet assigned | Not reported | [857642] |
| Debian | putty | source | bookworm | 0.67-3 | not yet assigned | Not reported | [857642] |
| Alpine | putty | apk | 3.2 | 0.68-r0 | Not reported | ALPINE-CVE-2017-6542 | Not reported |
| Alpine | putty | apk | 3.3 | 0.68-r0 | Not reported | ALPINE-CVE-2017-6542 | Not reported |
| Alpine | putty | apk | 3.4 | 0.68-r0 | Not reported | ALPINE-CVE-2017-6542 | Not reported |
| Alpine | putty | apk | 3.5 | 0.68-r0 | Not reported | ALPINE-CVE-2017-6542 | Not reported |
| Opensuse | putty | rpm | tumbleweed | 0.76-1.2 | Not reported | OPENSUSE-SU-2024:11201-1 | Not reported |
| Ubuntu | putty | deb | 16.04 | 0.67-3build0.16.04.1 | Not reported | UBUNTU-CVE-2017-6542 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [pterm]Fixed
Source package: [putty]
Details (4)
0.78-2+deb12u2· amd64 · bookwormFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u2· arm64 · bookwormFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
- [putty]Fixed
Details (4)
0.78-2+deb12u2· amd64 · bookwormFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u2· arm64 · bookwormFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
- [putty-doc]Fixed
Source package: [putty]
Details (4)
0.78-2+deb12u2· all · bookwormFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u2· all · bookwormFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· all · bookworm-securityFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· all · bookworm-securityFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
- [putty-tools]Fixed
Source package: [putty]
Details (4)
0.78-2+deb12u2· amd64 · bookwormFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u2· arm64 · bookwormFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.67-3dsa · putty · debian · bookworm; dsa · putty · debian · 12
[Debian 13 (Trixie)]
- [pterm]Fixed
Source package: [putty]
Details (2)
0.83-3· amd64 · trixieFixed · Fixed:
0.67-3dsa · putty · debian · 13
0.83-3· arm64 · trixieFixed · Fixed:
0.67-3dsa · putty · debian · 13
- [putty]Fixed
Details (2)
0.83-3· amd64 · trixieFixed · Fixed:
0.67-3dsa · putty · debian · 13
0.83-3· arm64 · trixieFixed · Fixed:
0.67-3dsa · putty · debian · 13
- [putty-doc]Fixed
Source package: [putty]
Details (2)
0.83-3· all · trixieFixed · Fixed:
0.67-3dsa · putty · debian · 13
0.83-3· all · trixieFixed · Fixed:
0.67-3dsa · putty · debian · 13
- [putty-tools]Fixed
Source package: [putty]
Details (2)
0.83-3· amd64 · trixieFixed · Fixed:
0.67-3dsa · putty · debian · 13
0.83-3· arm64 · trixieFixed · Fixed:
0.67-3dsa · putty · debian · 13
[openSUSE Tumbleweed]
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2024_11201-1.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2017-6542]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2017-6542]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2017-6542]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:11201-1]
- [https://security-tracker.debian.org/tracker/CVE-2017-6542]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]