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CVE-2009-0773

The JavaScript engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey...

10.0 High

The JavaScript engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1.15 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) a splice of an array that contains "some non-set elements," which causes jsarray.cpp to pass an incorrect argument to the ResizeSlots function, which triggers memory corruption; (2) vectors related to js_DecompileValueGenerator, jsopcode.cpp, defineSetter, and watch, which triggers an assertion failure or a segmentation fault; and (3) vectors related to gczeal, defineSetter, and watch, which triggers a hang.

Exploit likelihood

5.79%Down 2.4 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 10.0

The JavaScript engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1.15 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) a splice of an array that contains "some non-set elements," which causes jsarray.cpp to pass an incorrect argument to the ResizeSlots function, which triggers memory corruption; (2) vectors related to js_DecompileValueGenerator, jsopcode.cpp, defineSetter, and watch, which triggers an assertion failure or a segmentation fault; and (3) vectors related to gczeal, defineSetter, and watch, which triggers a hang.

Record
CVE-2009-0773
CVSS 2.0
10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-399
Updated
2026-11-02
CVE List No score

The JavaScript engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1.15 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) a splice of an array that contains "some non-set elements," which causes jsarray.cpp to pass an incorrect argument to the ResizeSlots function, which triggers memory corruption; (2) vectors related to js_DecompileValueGenerator, jsopcode.cpp, defineSetter, and watch, which triggers an assertion failure or a segmentation fault; and (3) vectors related to gczeal, defineSetter, and watch, which triggers a hang.

Record
CVE-2009-0773
Updated
2026-11-02
EUVDEUVD-2009-0773 No score

The JavaScript engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1.15 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) a splice of an array that contains "some non-set elements," which causes jsarray.cpp to pass an incorrect argument to the ResizeSlots function, which triggers memory corruption; (2) vectors related to js_DecompileValueGenerator, jsopcode.cpp, defineSetter, and watch, which triggers an assertion failure or a segmentation fault; and (3) vectors related to gczeal, defineSetter, and watch, which triggers a hang.

Record
EUVD-2009-0773
Updated
2026-11-03
GitHub AdvisoriesGHSA-fqq3-4hpj-9cxh No score

The JavaScript engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey...

The JavaScript engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1.15 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) a splice of an array that contains "some non-set elements," which causes jsarray.cpp to pass an incorrect argument to the ResizeSlots function, which triggers memory corruption; (2) vectors related to js_DecompileValueGenerator, jsopcode.cpp, defineSetter, and watch, which triggers an assertion failure or a segmentation fault; and (3) vectors related to gczeal, defineSetter, and watch, which triggers a hang.

Record
GHSA-fqq3-4hpj-9cxh
Updated
2026-11-02
OSVopenSUSE-SU-2024:10071-1 No score

MozillaFirefox-50.1.0-1.1 on GA media

These are all security issues fixed in the MozillaFirefox-50.1.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10071-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10218-1 No score

seamonkey-2.40-6.1 on GA media

These are all security issues fixed in the seamonkey-2.40-6.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10218-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10230-1 No score

MozillaThunderbird-45.5.1-1.1 on GA media

These are all security issues fixed in the MozillaThunderbird-45.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10230-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:14572-1 No score

firefox-esr-128.5.1-1.1 on GA media

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:14572-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
xulrunner
Debian:5.0
From an advisory covering 6 CVEs
 before 1.9.0.7-0lenny1, plus listed versions
1.9.0.5-11.9.0.6-1
1.9.0.7-0lenny1
icedove
Debian:5.0
From an advisory covering 19 CVEs
 before 2.0.0.22-0lenny1, plus listed versions
2.0.0.19-12.0.0.19-1+kbsd
2.0.0.22-0lenny1
firefox
Red Hat:enterprise_linux:4::as
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el4
0:3.0.7-1.el4
firefox-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el4
0:3.0.7-1.el4
firefox
Red Hat:enterprise_linux:4::desktop
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el4
0:3.0.7-1.el4
firefox-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el4
0:3.0.7-1.el4
firefox
Red Hat:enterprise_linux:4::es
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el4
0:3.0.7-1.el4
firefox-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el4
0:3.0.7-1.el4
firefox
Red Hat:enterprise_linux:4::ws
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el4
0:3.0.7-1.el4
firefox-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el4
0:3.0.7-1.el4
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Affected packages
PackageAffectedFixed
xulrunner
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 8 CVEs
 before 0:1.9.0.7-1.el5
0:1.9.0.7-1.el5
xulrunner-debuginfo
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 8 CVEs
 before 0:1.9.0.7-1.el5
0:1.9.0.7-1.el5
xulrunner-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 8 CVEs
 before 0:1.9.0.7-1.el5
0:1.9.0.7-1.el5
xulrunner-devel-unstable
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 8 CVEs
 before 0:1.9.0.7-1.el5
0:1.9.0.7-1.el5
firefox
Red Hat:enterprise_linux:5::client
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el5
0:3.0.7-1.el5
firefox-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el5
0:3.0.7-1.el5
xulrunner
Red Hat:enterprise_linux:5::client
From an advisory covering 8 CVEs
 before 0:1.9.0.7-1.el5
0:1.9.0.7-1.el5
xulrunner-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 8 CVEs
 before 0:1.9.0.7-1.el5
0:1.9.0.7-1.el5
firefox
Red Hat:enterprise_linux:5::server
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el5
0:3.0.7-1.el5
firefox-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 8 CVEs
 before 0:3.0.7-1.el5
0:3.0.7-1.el5
xulrunner
Red Hat:enterprise_linux:5::server
From an advisory covering 8 CVEs
 before 0:1.9.0.7-1.el5
0:1.9.0.7-1.el5
xulrunner-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 8 CVEs
 before 0:1.9.0.7-1.el5
0:1.9.0.7-1.el5
xulrunner-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 8 CVEs
 before 0:1.9.0.7-1.el5
0:1.9.0.7-1.el5
xulrunner-devel-unstable
Red Hat:enterprise_linux:5::server
From an advisory covering 8 CVEs
 before 0:1.9.0.7-1.el5
0:1.9.0.7-1.el5
MozillaFirefox
openSUSE:Tumbleweed
From an advisory covering 899 CVEs
 before 50.1.0-1.1
50.1.0-1.1
MozillaThunderbird
openSUSE:Tumbleweed
From an advisory covering 560 CVEs
 before 45.5.1-1.1
45.5.1-1.1
firefox-esr
openSUSE:Tumbleweed
From an advisory covering 1860 CVEs
 before 128.5.1-1.1
128.5.1-1.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-0773 is a high vulnerability (CVSS 10.0) in Mozilla Firefox, published March 5, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.79%, the 93rd percentile. No source names a fixed version.

References

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