Zero-day vulnerability in Windows

Buffer overflow
CVE-2008-4250

According to Symantec, first exploitation of this vulnerability was detected on 2008-02-05. The vulnerability was used by the ConямБcker worm.

Known malware:

Trojan (Gimmiv.A) and a Trojan searching for non-patched machines on LAN (Arpoc.A)
W32.Downadup aka ConямБcker
W32.Downadup.B
W32.Fujacks.CE
W32.Neeris.C
W32.Wapomi.B

Vulnerability details

Advisory: SB2008102301 - Remote code execution in Microsoft Windows

Vulnerable component: Windows

CVE-ID: CVE-2008-4250

CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

CWE-ID: CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Description:

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

The weakness exists due to buffer overflow during path canonicalization in Windows Server service. By sending a specially crafted RCP request, a remote attacker can cause memory corruption and execute arbitrary code with privileges of system account.

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

Note: this vulnerability was being actively exploited.

Public Exploits:

Vulnerability Scanning SaaS

Vulnerability scanning SaaS service is online 3-rd generation vulnerability scanner with scheduled assessments and vulnerability subscription. You can use service to check security of your network perimeter.