However, there is a known issue with versions (of which plenty are still running) of Internet Information Systems (IIS) software. Exploit code for this flaw is already available, and Microsoft's Jerry Bryant posted this blog that said Microsoft software engineers are diligently working on a fix:
InformationWeek's Thomas Claburn, on Friday, reported that Microsoft enhanced its warning on Internet Information Services software, stating that the vulnerabilities don't just affect older IIS versions but:
In related news, you will note that the ANS does not specify an update for the Internet Information Services FTP service vulnerability for which we released security advisory 975191 on Tuesday of this week. As noted in an earlier blog post, we have spun up our SSIRP (Software Security Incident Response Process) process to address this issue and our teams are working hard to produce an update.
So, let's hope a workable patch comes fast.
Based on additional proof-of-concept exploits that could allow denial-of-service attacks and on limited attempts to exploit the vulnerability, Microsoft now says that IIS 5.0, 5.1, 6.0, and 7.0 are vulnerable to a denial-of-service attacks.