Microsoft » Internet Explorer » 6.0.2900 : Security Vulnerabilities, CVEs, CVSS score >= 5

Microsoft Internet Explorer 6 through 9, and 10 Consumer Preview, allows remote attackers to bypass Protected Mode or cause a denial of service (memory corruption) by leveraging access to a Low integrity process, as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2012.

The JavaScript implementation in Microsoft Internet Explorer 8.0 and earlier does not properly restrict the set of values contained in the object returned by the getComputedStyle method, which allows remote attackers to obtain sensitive information about visited web pages by calling this method.

Microsoft Internet Explorer 6 and 7 does not initialize certain data structures during execution of the createElement method, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via crafted JavaScript code, as demonstrated by setting the (1) outerHTML or (2) value property of an object returned by createElement.

Microsoft Internet Explorer 6, 6 SP1, 7, and 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, leading to memory corruption, aka "HTML Object Memory Corruption Vulnerability."

Microsoft Internet Explorer 5.01 SP4, 6, and 6 SP1 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, leading to memory corruption, aka "Uninitialized Memory Corruption Vulnerability."

Microsoft Internet Explorer 6, 6 SP1, 7, and 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, leading to memory corruption, aka "Uninitialized Memory Corruption Vulnerability," a different vulnerability than CVE-2009-2530 and CVE-2009-2531.

Microsoft Internet Explorer 6 through 6.0.2900.2180 and 7 through 7.0.6000.16711 allows remote attackers to cause a denial of service (application hang) via a JavaScript loop that configures the home page by using the setHomePage method and a DHTML behavior property.

Microsoft Internet Explorer 6 through 6.0.2900.2180, and 7.0.6000.16711, allows remote attackers to cause a denial of service (CPU consumption) via an automatically submitted form containing a KEYGEN element, a related issue to CVE-2009-1828.

Microsoft Internet Explorer 6.0.2900.2180 and earlier allows remote attackers to cause a denial of service (CPU consumption and application hang) via JavaScript code with a long string value for the hash property (aka location.hash), a related issue to CVE-2008-5715.

Microsoft Internet Explorer 6.0.2900.2180 and earlier allows remote attackers to cause a denial of service (CPU and memory consumption) via a long Unicode string argument to the write method, a related issue to CVE-2009-2479. NOTE: it was later reported that 7.0.6000.16473 and earlier are also affected.

Microsoft Internet Explorer before 8 displays a cached certificate for a (1) 4xx or (2) 5xx CONNECT response page returned by a proxy server, which allows man-in-the-middle attackers to spoof an arbitrary https site by letting a browser obtain a valid certificate from this site during one request, and then sending the browser a crafted 502 response page upon a subsequent request.

Microsoft Internet Explorer before 8 uses the HTTP Host header to determine the context of a document provided in a (1) 4xx or (2) 5xx CONNECT response from a proxy server, which allows man-in-the-middle attackers to execute arbitrary web script by modifying this CONNECT response, aka an "SSL tampering" attack.

Microsoft Internet Explorer 7 and earlier allows remote attackers to bypass the "File Download - Security Warning" dialog box and download arbitrary .exe files by placing a '?' (question mark) followed by a non-.exe filename after the .exe filename, as demonstrated by (1) .txt, (2) .cda, (3) .log, (4) .dif, (5) .sol, (6) .htt, (7) .itpc, (8) .itms, (9) .dvr-ms, (10) .dib, (11) .asf, (12) .tif, and unspecified other extensions, a different issue than CVE-2004-1331. NOTE: this issue might not cross privilege boundaries, although it does bypass an intended protection mechanism.

Microsoft Internet Explorer 5.01 through 7 allows remote attackers to execute arbitrary code via "unexpected method calls to HTML objects," aka "DHTML Object Memory Corruption Vulnerability."

Microsoft Internet Explorer 5.01 through 7 allows remote attackers to execute arbitrary code via a crafted website using Javascript that creates, modifies, deletes, and accesses document objects using the tags property, which triggers heap corruption, related to uninitialized or deleted objects, a different issue than CVE-2007-3902 and CVE-2007-3903, and a variant of "Uninitialized Memory Corruption Vulnerability."

Microsoft Internet Explorer 6 and 7 allows remote attackers to execute arbitrary code via uninitialized or deleted objects used in repeated calls to the (1) cloneNode or (2) nodeValue JavaScript function, a different issue than CVE-2007-3902 and CVE-2007-5344, a variant of "Uninitialized Memory Corruption Vulnerability."

Use-after-free vulnerability in the CRecalcProperty function in mshtml.dll in Microsoft Internet Explorer 5.01 through 7 allows remote attackers to execute arbitrary code by calling the setExpression method and then modifying the outerHTML property of an HTML element, one variant of "Uninitialized Memory Corruption Vulnerability."

Microsoft Internet Explorer allows remote attackers to cause a denial of service (crash) via an IFRAME with a certain XML file and XSL stylesheet that triggers a crash in mshtml.dll when a refresh is called, probably a null pointer dereference.

Microsoft Internet Explorer 6.0.2900 SP2 and earlier allows remote attackers to cause a denial of service (crash) via a table element with a CSS attribute that sets the position, which triggers an "unhandled exception" in mshtml.dll.

Cross-site scripting (XSS) vulnerability in Microsoft Internet Explorer allows remote attackers to inject arbitrary web script or HTML via a UTF-7 encoded URL that is returned in a large HTTP 404 error message without an explicit charset, a related issue to CVE-2006-0032.

Unspecified versions of Internet Explorer allow remote attackers to cause a denial of service (crash) via an IFRAME with a src tag containing a "File://" URI followed by an 8-bit character. NOTE: some third parties were unable to verify this issue.

The scripting engine in Internet Explorer allows remote attackers to cause a denial of service (resource consumption) and possibly execute arbitrary code via a web page that contains a recurrent call to an infinite loop in Javascript or VBscript, which consumes the stack, as demonstrated by resetting the "location" variable within the loop.

The CLSID_ApprenticeICW control allows remote attackers to cause a denial of service (Internet Explorer crash) by creating a COM object of the class associated with the control's CLSID, which is not intended for use within Internet Explorer.

Buffer overflow in the PNG image rendering component of Microsoft Internet Explorer allows remote attackers to execute arbitrary code via a crafted PNG file.

Windows Explorer and Internet Explorer in Windows 2000 SP1 allows remote attackers to cause a denial of service (CPU consumption) via a malformed Windows Metafile (WMF) file.