CVE-2013-0757
CriticalPublic exploitMozilla: Chrome Object Wrapper (COW) bypass through changing prototype (MFSA 2013-14)
Published Jan 8, 2013 · Updated Aug 6, 2024
Key Facts
Patch immediately- CVE-2013-0757 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Firefox (Mozilla), Seamonkey (Mozilla), Thunderbird (Mozilla) and 22 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 61% probability of exploitation in the next 30 days.
- Fixed versions are available, including firefox-esr 128.5.1-1.1, firefox-esr-branding-upstream 128.5.1-1.1, firefox-esr-translations-common 128.5.1-1.1.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
61%
Higher than 99.1% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2013-0757 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Affected Products
38 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| FirefoxMozilla | See advisory | 17.0.2 |
| SeamonkeyMozilla | See advisory | 2.15 |
| ThunderbirdMozilla | See advisory | 17.0.2 |
| Thunderbird EsrMozilla | See advisory | 17.0.2 |
| Ubuntu LinuxCanonical | 10.04, 11.10, 12.04, 12.10 | n/a |
Patched Releases
firefox-esr
128.5.1-1.1
firefox-esr-branding-upstream
128.5.1-1.1
firefox-esr-translations-common
128.5.1-1.1
firefox-esr-translations-other
128.5.1-1.1
Firefox
17.0.2
Seamonkey
2.15, 2.40-6.1
Thunderbird
17.0.2
Thunderbird Esr
17.0.2
MozillaFirefox
50.1.0-1.1
MozillaFirefox-branding-upstream
50.1.0-1.1
MozillaFirefox-buildsymbols
50.1.0-1.1
MozillaFirefox-devel
50.1.0-1.1
MozillaFirefox-translations-common
50.1.0-1.1
MozillaFirefox-translations-other
50.1.0-1.1
MozillaThunderbird
45.5.1-1.1
MozillaThunderbird-buildsymbols
45.5.1-1.1
MozillaThunderbird-devel
45.5.1-1.1
MozillaThunderbird-translations-common
45.5.1-1.1
MozillaThunderbird-translations-other
45.5.1-1.1
seamonkey-dom-inspector
2.40-6.1
seamonkey-irc
2.40-6.1
seamonkey-translations-common
2.40-6.1
seamonkey-translations-other
2.40-6.1
Timeline
Publicly disclosed
Jan 8, 2013
Last updated
Aug 6, 2024
Weakness Type
- CWE-20 Improper Input Validation
References
- advisorySUSE-SU-2013:0048
- advisorySUSE-SU-2013:0049
- advisoryopenSUSE-SU-2013:0131
- advisoryopenSUSE-SU-2013:0149
- advisoryoval:org.mitre.oval:def:16939
FAQ
Common Questions.
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 JavaSc…
Affected: Firefox (Mozilla); Seamonkey (Mozilla); Thunderbird (Mozilla), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including firefox-esr 128.5.1-1.1, firefox-esr-branding-upstream 128.5.1-1.1, firefox-esr-translations-common 128.5.1-1.1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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