medium
6.8
CWE
189 119 190
Advisory Published
Updated

CVE-2013-4852: Buffer Overflow

First published: Mon Aug 19 2013(Updated: )

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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
WinSCP<=5.1.5
WinSCP=3.7.6
WinSCP=3.8.2
WinSCP=3.8_beta
WinSCP=4.0.4
WinSCP=4.0.5
WinSCP=4.2.6
WinSCP=4.2.7
WinSCP=4.2.8
WinSCP=4.2.9
WinSCP=4.3.2
WinSCP=4.3.4
WinSCP=4.3.5
WinSCP=4.3.6
WinSCP=4.3.7
WinSCP=4.3.8
WinSCP=4.3.9
WinSCP=4.4.0
WinSCP=5.0-beta
WinSCP=5.0.1-beta
WinSCP=5.0.2-beta
WinSCP=5.0.3-beta
WinSCP=5.0.4-beta
WinSCP=5.0.5-beta
WinSCP=5.0.6-beta
WinSCP=5.0.7-beta
WinSCP=5.0.8-rc
WinSCP=5.0.9-rc
WinSCP=5.1
WinSCP=5.1.1
WinSCP=5.1.2
WinSCP=5.1.3
WinSCP=5.1.4
Debian Debian Linux=6.0
Debian Debian Linux=7.0
Debian Debian Linux=7.1
openSUSE=12.3
PuTTY=0.45
PuTTY=0.46
PuTTY=0.47
PuTTY=0.48
PuTTY=0.49
PuTTY=0.50
PuTTY=0.51
PuTTY=0.52
PuTTY=0.53b
PuTTY=0.54
PuTTY=0.55
PuTTY=0.56
PuTTY=0.57
PuTTY=0.58
PuTTY=0.59
PuTTY=0.60
PuTTY=0.61
PuTTY=2010-06-01-r8967
PuTTY<=0.62
PuTTY=0.53

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2013-4852?

    CVE-2013-4852 is classified as a high-severity vulnerability due to its potential for denial of service and possible arbitrary code execution.

  • How do I fix CVE-2013-4852?

    To fix CVE-2013-4852, you should upgrade to the latest version of PuTTY or WinSCP that is not affected by this vulnerability.

  • What products are impacted by CVE-2013-4852?

    CVE-2013-4852 affects PuTTY versions 0.62 and earlier, as well as multiple versions of WinSCP prior to 5.1.6.

  • What types of attacks can exploit CVE-2013-4852?

    CVE-2013-4852 can be exploited by remote SSH servers to crash affected applications or potentially execute arbitrary code.

  • What is the nature of the vulnerability in CVE-2013-4852?

    CVE-2013-4852 involves an integer overflow vulnerability that occurs during RSA key signature processing.

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