Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2013-4852

Severity CVSS v4.0:
Pending analysis
Type:
CWE-189 Numeric Errors
Publication date:
19/08/2013
Last modified:
11/04/2025

Description

Integer overflow in PuTTY 0.62 and earlier, WinSCP before 5.1.6, and other products that use PuTTY allows remote SSH servers to cause a denial of service (crash) and possibly execute arbitrary code in certain applications that use PuTTY via a negative size value in an RSA key signature during the SSH handshake, which triggers a heap-based buffer overflow.

Impact

Vector 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
6.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:winscp:winscp:*:*:*:*:*:*:*:* 5.1.5 (including)
cpe:2.3:a:winscp:winscp:3.7.6:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:3.8.2:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:3.8_beta:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:4.0.4:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:4.0.5:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:4.2.6:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:4.2.7:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:4.2.8:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:4.2.9:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:4.3.2:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:4.3.4:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:4.3.5:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:4.3.6:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:4.3.7:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools