Zero-day vulnerability in Xunlei Thunder

Heap-based buffer overflow
CVE-2007-6144

Not patched

This vulnerability was first reported on SEBUG.net. This vulnerability was used in mass SQL injection attack against Chinese websites in May 2008.

Known malware:

Exploit:HTML/IESlice.BK.

Vulnerability details

Advisory: SB20071117 - Remote code execution in Xunlei Thunder

Vulnerable component: Xunlei Thunder

CVE-ID: CVE-2007-6144

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

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Description:

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

The vulnerability exists due to boundary error in PPlayer.XPPlayer.1 ActiveX control when handling long strings passed via FlvPlayerUrl property value. A remote attacker can create a specially crafted web page, trick the victim into visiting it, cause a heap-based buffer overflow and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in compromise of vulnerable system.

Note: this vulnerability was being actively exploited.

External links:

http://betanews.com/2008/05/19/ten-thousand-servers-hit-in-sql-injection-hack/
http://www.pcworld.com/article/146048/article.html
https://forums.whatthetech.com/index.php?showtopic=91131
https://isc.sans.edu/diary/The+10.000+web+sites+infection+mystery+solved/4294
https://www.symantec.com/security_response/attacksignatures/detail.jsp?asid=50081

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.