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.

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.

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.

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.

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.

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.

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.

Updated putty package fixes security vulnerability:

Many versions of PSCP in PuTTY prior to 0.67 have a stack corruption vulnerability in their treatment of the 'sink' direction (i.e. downloading from server to client) of the old-style SCP protocol. In order for this vulnerability to be exploited, the user must connect to a malicious server and attempt to download any file (CVE-2016-2563).

The putty package has been updated to version 0.67 to fix this issue and a few other bugs. The halibut package has been updated to version 1.1 to build the documentation.

Many versions of PSCP in PuTTY prior to 0.67 have a stack corruption vulnerability in their treatment of the 'sink' direction (i.e. downloading from server to client) of the old-style SCP protocol. In order for this vulnerability to be exploited, the user must connect to a malicious server and attempt to download any file (CVE-2016-2563).

FileZilla was vulnerable to this issue as it bundles a copy of PuTTY. The filezilla package has been updated to version 3.16.1, which fixes this issue and has many other fixes and enhancements.