Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Vulnerabilities / Threats

Zero-Day Exploits On IE7 Could Spread To Other Microsoft Browsers

IE5, IE6, and the IE8 beta are also potentially vulnerable, software giant says

The zero-day vulnerability in Internet Explorer 7 can also be found in other versions of the Microsoft browser, but exploits can be avoided through a series of workarounds, Microsoft said yesterday.

The zero-day vulnerability reported last week has led to exploits that are still in the wild, confirmed in a security bulletin issued yesterday. Although the attacks so far have been only against versions of IE7, Microsoft also conceded that IE versions 5, 6, and the 8.2 beta are also potentially vulnerable.

"The vulnerability exists as an invalid pointer reference in the data binding function of Internet Explorer," Microsoft says. "When data binding is enabled (which is the default state), it is possible under certain conditions for an object to be released without updating the array length, leaving the potential to access the deleted object's memory space. This can cause Internet Explorer to exit unexpectedly, in a state that is exploitable."

Attacks that exploit the vulnerability continue, and there are likely to be more, Microsoft says. "Current trending indicates that there may be attempts to utilize SQL injection attacks against Websites to load attack code on those Website," the company says. Microsoft is recommending a series of "workarounds" that are designed to prevent the attacks:

  • Protected Mode in Internet Explorer 7 and Internet Explorer 8 Beta 2 in Windows Vista limits the impact of the vulnerability.

  • By default, Internet Explorer on Windows Server 2003 and Windows Server 2008 runs in a restricted mode known as Enhanced Security Configuration. This mode sets the security level for the Internet zone to High.

  • An attacker who successfully exploits this vulnerability could gain the same user rights as the local user. Users whose accounts are configured to have fewer user rights on the system could be less affected than users who operate with administrative user rights.

  • Currently known attacks cannot exploit this issue automatically through e-mail, Microsoft says.

Several reports indicate that the vulnerability was accidentally published by researchers in China, but most experts agree that the flaw was already known by many hackers before the error occurred.

Have a comment on this story? Please click "Discuss" below. If you'd like to contact Dark Reading's editors directly, send us a message Tim Wilson is Editor in Chief and co-founder of Dark Reading.com, UBM Tech's online community for information security professionals. He is responsible for managing the site, assigning and editing content, and writing breaking news stories. Wilson has been recognized as one ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Data Leak Week: Billions of Sensitive Files Exposed Online
Kelly Jackson Higgins, Executive Editor at Dark Reading,  12/10/2019
Intel Issues Fix for 'Plundervolt' SGX Flaw
Kelly Jackson Higgins, Executive Editor at Dark Reading,  12/11/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
The Year in Security: 2019
This Tech Digest provides a wrap up and overview of the year's top cybersecurity news stories. It was a year of new twists on old threats, with fears of another WannaCry-type worm and of a possible botnet army of Wi-Fi routers. But 2019 also underscored the risk of firmware and trusted security tools harboring dangerous holes that cybercriminals and nation-state hackers could readily abuse. Read more.
Flash Poll
Rethinking Enterprise Data Defense
Rethinking Enterprise Data Defense
Frustrated with recurring intrusions and breaches, cybersecurity professionals are questioning some of the industrys conventional wisdom. Heres a look at what theyre thinking about.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-5252
PUBLISHED: 2019-12-14
There is an improper authentication vulnerability in Huawei smartphones (Y9, Honor 8X, Honor 9 Lite, Honor 9i, Y6 Pro). The applock does not perform a sufficient authentication in a rare condition. Successful exploit could allow the attacker to use the application locked by applock in an instant.
CVE-2019-5235
PUBLISHED: 2019-12-14
Some Huawei smart phones have a null pointer dereference vulnerability. An attacker crafts specific packets and sends to the affected product to exploit this vulnerability. Successful exploitation may cause the affected phone to be abnormal.
CVE-2019-5264
PUBLISHED: 2019-12-13
There is an information disclosure vulnerability in certain Huawei smartphones (Mate 10;Mate 10 Pro;Honor V10;Changxiang 7S;P-smart;Changxiang 8 Plus;Y9 2018;Honor 9 Lite;Honor 9i;Mate 9). The software does not properly handle certain information of applications locked by applock in a rare condition...
CVE-2019-5277
PUBLISHED: 2019-12-13
Huawei CloudUSM-EUA V600R006C10;V600R019C00 have an information leak vulnerability. Due to improper configuration, the attacker may cause information leak by successful exploitation.
CVE-2019-5254
PUBLISHED: 2019-12-13
Certain Huawei products (AP2000;IPS Module;NGFW Module;NIP6300;NIP6600;NIP6800;S5700;SVN5600;SVN5800;SVN5800-C;SeMG9811;Secospace AntiDDoS8000;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG6000V;eSpace U1981) have an out-of-bounds read vulnerability. An attacker who logs in to the board m...