CVE-2013-0757

Name: CVE-2013-0757
Creator: NVD / NIST
Published: 2013-01-13T20:55:02.01+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 60.86%

Last modified Jun 16, 2026

CVE-2013-0757 is a vulnerability of currently unknown severity. The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderbird ESR 17.x before 17.0.2, and SeaMonkey before 2.15 does not prevent modifications to the prototype of an object, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges by referencing Object.prototype.__proto__ in a crafted HTML document.. EPSS estimates a 60.86% chance of exploitation in the next 30 days.

Description

The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderbird ESR 17.x before 17.0.2, and SeaMonkey before 2.15 does not prevent modifications to the prototype of an object, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges by referencing Object.prototype.__proto__ in a crafted HTML document.

Metrics

EPSS Probability

60.86%

99.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions	Update
Mozilla	Firefox	< 17.0.2	—
Mozilla	Firefox	< 18.0	—
Mozilla	Seamonkey	< 2.15	—
Mozilla	Thunderbird	< 17.0.2	—
Mozilla	Thunderbird Esr	< 17.0.2	—
Opensuse	Opensuse	11.4	—
Opensuse	Opensuse	12.1	—
Opensuse	Opensuse	12.2	—
Suse	Linux Enterprise Desktop	10	Sp4
Suse	Linux Enterprise Desktop	11	Sp2
Suse	Linux Enterprise Server	10	Sp4
Suse	Linux Enterprise Server	11	Sp2
Suse	Linux Enterprise Software Development Kit	10	Sp4
Suse	Linux Enterprise Software Development Kit	11	Sp2
Canonical	Ubuntu Linux	10.04	—
Canonical	Ubuntu Linux	11.10	—
Canonical	Ubuntu Linux	12.04	—
Canonical	Ubuntu Linux	12.10	—

References

http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00006.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00007.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00010.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00017.htmlThird Party Advisory
http://www.mozilla.org/security/announce/2013/mfsa2013-14.htmlVendor Advisory
http://www.ubuntu.com/usn/USN-1681-1Third Party Advisory
http://www.ubuntu.com/usn/USN-1681-2Third Party Advisory
http://www.ubuntu.com/usn/USN-1681-4Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=813901Exploit, Issue Tracking, Patch, Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16939Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00006.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00007.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00010.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00017.htmlThird Party Advisory
http://www.mozilla.org/security/announce/2013/mfsa2013-14.htmlVendor Advisory
http://www.ubuntu.com/usn/USN-1681-1Third Party Advisory
http://www.ubuntu.com/usn/USN-1681-2Third Party Advisory
http://www.ubuntu.com/usn/USN-1681-4Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=813901Exploit, Issue Tracking, Patch, Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16939Third Party Advisory

Timeline

Published: Jan 13, 2013
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-0757?

How severe is CVE-2013-0757?

Severity scoring for CVE-2013-0757 is pending analysis. The EPSS model estimates a 60.86% probability of exploitation in the next 30 days.

How do I fix CVE-2013-0757?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-0757?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST