Skip Ribbon Commands
Skip to main content
Computer Emergency Response Team of Mauritius (CERT-MU)

VN-2017-38


Mozilla Firefox Multiple Bugs Let Remote Users Bypass Security Restrictions, Spoof URLs, Obtain Potentially Sensitive Information, Deny Service, and Execute Arbitrary Code
Severity Rating: High
Systems Affected:
  • Mozilla Firefox prior to 52.0
Description
Multiple vulnerabilities have been reported in Mozilla Firefox and can be exploited by remote attackers to cause denial of service condition, can delete files, bypass security controls, obtain sensitive information and spoof URLs. The vulnerabilities identified are as follows:
 
·         A remote user can exploit a flaw in ‘asm.js’ to bypass ASLR and DEP security features on the target system.
 
·         A remote user can create specially crafted content that, when loaded by the target user, will execute arbitrary code on the target user's system.
 
·         A memory corruption error may occur in handling ErrorResult.
 
·         A use-after-free memory error may occur in processing events in FontFace objects.
 
·         A use-after-free memory error may occur when using addRange.
 
·         A use-after-free memory error may occur when using ranges in selections.
 
·         A memory corruption error may occur during JavaScript garbage collection incremental sweeping.
 
·         A use-after-free memory error may occur in libGLES.
 
·         Other memory corruption errors may occur.
 
·         A remote user can delete files on the target system via a callback parameter in Mozilla Windows Updater and Maintenance Service.
 
·         A remote user can cause denial of service conditions.
 
·         A remote user can trigger a segmentation fault in Skia during some canvas operations.
 
·         A remote user can invoke the 'view-source:' protocol repeatedly in a single hyperlink to cause the browser to crash.
 
·         A remote user can trigger a segmentation fault during some bidirectional layout operations.
 
·         A remote user can trigger a null pointer dereference in HttpChannel to cause the browser to crash.
 
·         A remote server can repeatedly trigger a modal authentication prompt to cause the target connected user's browser to become non-responsive.
 
·         A remote user can obtain potentially sensitive information on the target system.
 
·         A remote user can conduct floating-point timing side channel attacks using SVG filters to access pixel values and obtain history and text information from other domains.
 
·         A remote user can load video captions from other domains.
 
·         A remote user can trigger a buffer read error in SVG filter color value operations to obtain potentially sensitive data.
 
·         A remote user can send specially crafted HTTP digest authorization responses to trigger an out-of-bounds memory read error and leak potentially sensitive information.
 
·         The file picker dialog may choose and display the wrong local default directory, allowing a remote user to obtain potentially sensitive information, such as the operating system or the local account name.
 
·         A remote user can spoof URLs via a ‘blob:’ protocol.
 
·         A remote user can spoof address bar data via drag and drop URLs.
 
·         A remote user can use a 'javascript:' url to obfuscate the addressbar location .
 
·         A remote user can spoof the contents of the print preview window.
 
·         A remote user can exploit overly permissive Gecko Media Plugin sandbox regular expression access controls to obtain data in subdirectories of ‘/private/var’.
 
·         A remote user can bypass Gecko Media Plugin sandbox restrictions when the seccomp-bpf filter is running.
 
·         A local user can create a specially crafted 'chrome.manifest' file to cause arbitrary software to added.
 
Solution
Users are advised to apply updates.
More information about the update is available on:
 
Vendor Information
Mozilla
 
CVE Information
 
List of other CVE Information is available on:
 
References
Security Tracker
 
Mozilla
 
Contact Information
 
Postal address
Mauritian Computer Emergency Response Team (CERT-MU)
National Computer Board
7th Floor, Stratton Court
La Poudriere Street
Port Louis