#VU42656 Division by zero in PuTTY - CVE-2013-4207

Published: 2013-08-20 | Updated: 2022-10-31

Vulnerability identifier: #VU42656

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-4207

CWE-ID: CWE-369

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PuTTY
Client/Desktop applications / Software for system administration

Vendor: Simon Tatham

Description

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a division by zero error within . A remote attacker can pass specially crafted data to the application and crash it.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PuTTY: 0.45 - 0.61

External links
https://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html
https://secunia.com/advisories/54379
https://secunia.com/advisories/54533
https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-bignum-division-by-zero.html
https://www.debian.org/security/2013/dsa-2736
https://www.openwall.com/lists/oss-security/2013/08/06/11

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.