Zero-day vulnerability in Windows

Integer overflow
CVE-2008-1446

According to US CERT, the targeted attacks were spotted on May 2, 2008.

Vulnerability details

Advisory: SB2008050201 - Remote code execution in Microsoft Windows Internet Printing Service

Vulnerable component: Windows

CVE-ID: CVE-2008-1446

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C

CWE-ID: CWE-190 - Integer overflow

Description:

The vulnerability allows a remote authenticated attacker to execute arbitrary code on the target system.

The weakness exists due to integer overflow in Windows Internet Printing Protocol (IPP) implementation. By sending a specially crafted HTTP POST request, a remote authenticated attacker can cause memory corruption and execute arbitrary code.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

External links:

https://technet.microsoft.com/en-us/library/security/ms08-062.aspx
http://www.kb.cert.org/vuls/id/793233
https://www.cnet.com/news/microsoft-fixes-20-flaws-with-11-patches/

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.