Vulnerability Details : CVE-2016-2563
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.
Vulnerability category: OverflowMemory CorruptionExecute codeDenial of service
Products affected by CVE-2016-2563
- cpe:2.3:a:simon_tatham:putty:*:*:*:*:*:*:*:*
- cpe:2.3:a:9bis:kitty:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-2563
1.62%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 86 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-2563
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2016-2563
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-2563
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https://security.gentoo.org/glsa/201606-01
PuTTY: Multiple vulnerabilities (GLSA 201606-01) — Gentoo security
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http://www.securitytracker.com/id/1035257
PuTTY Buffer Overflow in SCP Sink Protocol Lets Remote Authenticated Users Execute Arbitrary Code - SecurityTracker
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http://www.securityfocus.com/bid/84296
PuTTY CVE-2016-2563 Multiple Buffer Overflow Vulnerabilities
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http://lists.opensuse.org/opensuse-updates/2016-05/msg00131.html
openSUSE-SU-2016:1453-1: moderate: Security update for putty
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http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-pscp-sink-sscanf.html
PuTTY vulnerability vuln-pscp-sink-sscanfPatch
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https://github.com/tintinweb/pub/tree/master/pocs/cve-2016-2563
pub/pocs/cve-2016-2563 at master · tintinweb/pub · GitHubVendor Advisory
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http://seclists.org/fulldisclosure/2016/Mar/22
Full Disclosure: CVE-2016-2563 - PuTTY/PSCP <=0.66 buffer overflow - vuln-pscp-sink-sscanf
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