Microsoft warns of new IE bug; attacks under way
It's the second zero-day vulnerability in the last 60 days
Computerworld - Microsoft Corp. today warned of a critical vulnerability in Internet Explorer that is already being exploited by hackers; it was the company's second such admission in the past two months.
Internet Explorer 6 and its 2006 successor, IE7, contain a vulnerability that can be used by attackers to inject malicious code into a Windows PC. The oldest and newest of Microsoft's supported browsers, IE 5.01 and IE8, respectively, are not vulnerable to such attacks.
"At this time, we are aware of targeted attacks attempting to use this vulnerability," Microsoft acknowledged in an advisory posted simultaneously with two security updates that patched eight bugs in Windows and Office. Elsewhere, Microsoft said that the vulnerability had been publicly disclosed.
"It doesn't look like an exploit has been publicly posted," noted Andrew Storms, director of security operations at nCircle Network Security Inc., who added that Microsoft might have been made aware of the vulnerability either via a customer report or from one of the security companies that partner with it in the Microsoft Active Protections Program (MAPP). A report on the bug later today from the likes of Symantec or McAfee would indicate the latter, said Storms.
This is the second time in the last 60 days that Microsoft has admitted that hackers were exploiting an unpatched bug in IE. In mid-January, Microsoft said that a flaw in IE had been used to attack several companies' networks, including Google's and Adobe's. Microsoft patched that vulnerability, and seven others, later in the month when it issued an emergency update, often dubbed an "out-of-band" update.
As is its practice, Microsoft today did not spell out a timeline for patching the latest IE vulnerability, nor did it commit to an out-of-band fix.
Storms said it was too early to say whether Microsoft would rush a patch to users. "Generally, one of the indicators is if an exploit has gone public," he said, noting that as far as he knew, none had. "That often determines how quickly they'll patch. Of course, the way the Internet moves, [an exploit] could be posted in minutes, and then the story changes completely."
If Microsoft does not go out-of-band for this IE vulnerability, it might not issue a patch for it until May, Storms said, noting that the company will have to thoroughly test the repair job. April might be possible, he added, depending on how long Microsoft has known of the vulnerability and where it is in the fix cycle. "But then they wouldn't get a full QA cycle on the patch," he said.
Microsoft's next scheduled Patch Tuesday is April 13, five weeks from today.
Microsoft listed several recommended actions that users of IE6 and IE7 can take to defend themselves in lieu of a patch. They include modifying access to the "iepeers.dll," disabling scripting in the browsers and enabling DEP (data execution prevention).
Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer or subscribe to Gregg's RSS feed . His e-mail address is email@example.com.
- Feds declare big win over Cryptolocker ransomware
- Hackers hit more businesses through remote access accounts
- P.F. Chang's post-breach move to manual processing is telling
- Microsoft withholds monster IE update from Windows 8.1 dawdlers
- In baffling move, TrueCrypt open-source crypto project shuts down
- 'Oleg Pliss' hack makes for a perfect teachable IT moment
- Give IE the heave-ho until Microsoft patches zero-day
- Hackers find first post-retirement Windows XP-related vulnerability
- Researcher claims two hacker gangs exploiting unpatched IE bug
- Update: Third of Internet Explorer users at risk from attacks
Read more about Security in Computerworld's Security Topic Center.
- Mobile First: Securing Information Sprawl Learn how the partnership between Box and MobileIron can help you execute a "mobile first" strategy that manages and secures both mobile apps...
- Cybersecurity Imperatives: Reinvent your Network Security The Rise of CyberSecurity
- Surescripts Case Study- Securing Keys and Certificates Surescripts implemented Venafi's Trust Protection Platform™ to secure digital keys and certificates, ensure the privacy and confidentiality of electronic clinical information for its...
- Ponemon 2014 SSH Security Vulnerability Report According to research by the Ponemon Institute, 3 out of 4 enterprises have no security controls in place for SSH which leaves organizations...
- Responding to New SSL Cybersecurity Threat The featured Gartner research examines current strategies to address new SSL cybersecurity threats and vulnerabilities.
- Deep Dive into Advanced Networking and Security with Hybrid Cloud Security and networking are among the top concerns when moving workloads to the cloud. VMware vCloud® Hybrid Service™ enables you to extend your... All Security White Papers | Webcasts
Our new bimonthly Internet of Things newsletter helps you keep pace with the rapidly evolving technologies, trends and developments related to the IoT. Subscribe now and stay up to date!