CVE-2013-0773

CRITICAL 9.3CVE-2013-0773 · Published 19/02/2013 · updated 16/06/2026

In short

CVE-2013-0773 is a CRITICAL (CVSS 9.3) vulnerability affecting firefox (mozilla), seamonkey (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 2.4%, higher than 83.8% of all vulnerabilities.
Fix: update to 17.0.3, 19.0, 2.16 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 17.0.3< 19.0`	`17.0.319.0`
seamonkey mozilla	`< 2.16`	`2.16`
thunderbird mozilla	`< 17.0.3`	`17.0.3`
thunderbird esr mozilla	`< 17.0.3`	`17.0.3`

Description

The Chrome Object Wrapper (COW) and System Only Wrapper (SOW) implementations in Mozilla Firefox before 19.0, Firefox ESR 17.x before 17.0.3, Thunderbird before 17.0.3, Thunderbird ESR 17.x before 17.0.3, and SeaMonkey before 2.16 do not prevent modifications to a prototype, which allows remote attackers to obtain sensitive information from chrome objects or possibly execute arbitrary JavaScript code with chrome privileges via a crafted web site.