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Multiple serious vulnerabilities have been found in Mozilla Thunderbird. Malicious users can exploit these vulnerabilities to obtain sensitive information, run arbitrary code, cause a denial of service, spoof user interface and gain privilege escalation.

Below is a complete list of vulnerabilities

  1. Memory corruption vulnerability in JIT code allocation can be exploited remotely to bypass ASLR and DEP protections and cause a denial of service as a result;
  2. Use-after-free vulnerability can be exploited remotely while manipulating XSL in XSLT documents;
  3. Incorrect handling of sharing hash codes between pages in java script vulnerability can be exploited remotely to cause a denial of service;
  4. Use-after-free vulnerability can be exploited remotely via fuzzing during DOM manipulation of SVG content;
  5. Insecure methods in the Json Viewer in the Developer Tools can be exploited remotely to allow a potential privilege escalation;
  6. Use-after-free vulnerability in the Media Decoder can be exploited remotely to obtain sensitive information;
  7. Improper handling of some Unicode characters in URLs can be exploited remotely to allow spoofing of domain names in the location bar;
  8. Memory corruption vulnerability can be exploited remotely to run arbitrary code;

Technical details

Vulnerability (5) can be caused by using insecure methods of creating a communication channel for copying and viewing JSON or HTTP headers data.

NB: This vulnerabilities have no public CVSS rating so rating can be changed by the time.

NB: At this moment Mozilla just reserved CVE numbers for this vulnerabilities. Information can be changed soon.

Original advisories


Public exploits exist for this vulnerability.

Related products

CVE list

  • CVE-2017-5375
  • CVE-2017-5376
  • CVE-2017-5378
  • CVE-2017-5380
  • CVE-2017-5390
  • CVE-2017-5396
  • CVE-2017-5383
  • CVE-2017-5373

Read more

Find out the statistics of the vulnerabilities spreading in your region on statistics.securelist.com

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