CVE-2016-2563
Description
Stack-based buffer overflow in the SCP command-line utility in PuTTY before 0.67 and KiTTY 0.66.6.3 and earlier allows remote servers to cause a denial of service (stack memory corruption) or execute arbitrary code via a crafted SCP-SINK file-size response to an SCP download request.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Putty pscp 0.66 - Stack Buffer Overwrite
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0.67-1 |
| sid | Fixed | 0.67-1 |
| forky | Fixed | 0.67-1 |
| bullseye | Fixed | 0.67-1 |
| bookworm | Fixed | 0.67-1 |
References
- https://www.suse.com/security/cve/CVE-2016-2563.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00131.html
- http://seclists.org/fulldisclosure/2016/Mar/22
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-pscp-sink-sscanf.html
- http://www.securityfocus.com/bid/84296
- http://www.securitytracker.com/id/1035257
- https://github.com/tintinweb/pub/tree/master/pocs/cve-2016-2563
- https://security.gentoo.org/glsa/201606-01
- https://security-tracker.debian.org/tracker/CVE-2016-2563
CWEs
CWE-119
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.