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  4. Web Attack: Mozilla Firefox CVE-2013-0753

Web Attack: Mozilla Firefox CVE-2013-0753

Severity: High

This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.


This signature detects attempts to exploit a use-after-free vulnerability in Mozilla Firefox, Thunderbird which could result in remote code execution.

Additional Information

Mozilla Firefox, SeaMonkey, and Thunderbird are prone to a remote code execution vulnerability that arises due to a use-after-free error in the XMLSerializer. Specifically, this issue affects the 'serializeToStream' function.


  • Firefox 18.0
  • Firefox ESR 10.0.12
  • Firefox ESR 17.0.2
  • Thunderbird 17.0.2
  • Thunderbird ESR 10.0.12
  • Thunderbird ESR 17.0.2
  • SeaMonkey 2.15
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