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CVE-2009-2463

Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in...

10.0 HighFix available

Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in nsprpub/lib/libc/src/base64.c in Mozilla Firefox before 3.0.12, Thunderbird before 2.0.0.24, and SeaMonkey before 1.1.19 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors that trigger buffer overflows.

Exploit likelihood

6.43%Down 1.8 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 10.0

Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in nsprpub/lib/libc/src/base64.c in Mozilla Firefox before 3.0.12, Thunderbird before 2.0.0.24, and SeaMonkey before 1.1.19 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors that trigger buffer overflows.

Record
CVE-2009-2463
CVSS 2.0
10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-189
Updated
2026-11-02
CVE List No score

Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in nsprpub/lib/libc/src/base64.c in Mozilla Firefox before 3.0.12, Thunderbird before 2.0.0.24, and SeaMonkey before 1.1.19 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors that trigger buffer overflows.

Record
CVE-2009-2463
Updated
2026-11-02
EUVDEUVD-2009-2458 No score

Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in nsprpub/lib/libc/src/base64.c in Mozilla Firefox before 3.0.12, Thunderbird before 2.0.0.24, and SeaMonkey before 1.1.19 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors that trigger buffer overflows.

Record
EUVD-2009-2458
Updated
2026-11-03
GitHub AdvisoriesGHSA-483p-23q4-52hc No score

Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in...

Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in nsprpub/lib/libc/src/base64.c in Mozilla Firefox before 3.0.12, Thunderbird before 2.0.0.24, and SeaMonkey before 1.1.19 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors that trigger buffer overflows.

Record
GHSA-483p-23q4-52hc
Updated
2026-11-02
OSV No score

Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in nsprpub/lib/libc/src/base64.c in Mozilla Firefox before 3.0.12, Thunderbird before 2.0.0.24, and SeaMonkey before 1.1.19 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors that trigger buffer overflows.

Record
CVE-2009-2463
Updated
2026-11-02
OSVDEBIAN-CVE-2009-2463 No score

Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in nsprpub/lib/libc/src/base64.c in Mozilla Firefox before 3.0.12, Thunderbird before 2.0.0.24, and SeaMonkey before 1.1.19 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors that trigger buffer overflows.

Record
DEBIAN-CVE-2009-2463
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
nspr
Debian:12
before 4.8.2-1
4.8.2-1
nspr
Debian:13
before 4.8.2-1
4.8.2-1
nspr
Debian:14
before 4.8.2-1
4.8.2-1
nspr
Debian:5.0
From an advisory covering 2 CVEs
before 4.7.1-5, plus listed versions
4.7.1-4
4.7.1-5
icedove
Debian:5.0
From an advisory covering 6 CVEs
before 2.0.0.24-0lenny1, plus listed versions
2.0.0.19-12.0.0.19-1+kbsd2.0.0.22-0lenny12.0.0.22-12.0.0.22-1.1
2.0.0.24-0lenny1
firefox
Red Hat:enterprise_linux:4::as
From an advisory covering 11 CVEs
before 0:3.0.12-1.el4
0:3.0.12-1.el4
firefox-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 11 CVEs
before 0:3.0.12-1.el4
0:3.0.12-1.el4
firefox
Red Hat:enterprise_linux:4::desktop
From an advisory covering 11 CVEs
before 0:3.0.12-1.el4
0:3.0.12-1.el4
firefox-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 11 CVEs
before 0:3.0.12-1.el4
0:3.0.12-1.el4
firefox
Red Hat:enterprise_linux:4::es
From an advisory covering 11 CVEs
before 0:3.0.12-1.el4
0:3.0.12-1.el4
Show 101 moreShow less
Affected packages
PackageAffectedFixed
firefox-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 11 CVEs
before 0:3.0.12-1.el4
0:3.0.12-1.el4
firefox
Red Hat:enterprise_linux:4::ws
From an advisory covering 11 CVEs
before 0:3.0.12-1.el4
0:3.0.12-1.el4
firefox-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 11 CVEs
before 0:3.0.12-1.el4
0:3.0.12-1.el4
xulrunner
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 11 CVEs
before 0:1.9.0.12-1.el5_3
0:1.9.0.12-1.el5_3
xulrunner-debuginfo
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 11 CVEs
before 0:1.9.0.12-1.el5_3
0:1.9.0.12-1.el5_3
xulrunner-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 11 CVEs
before 0:1.9.0.12-1.el5_3
0:1.9.0.12-1.el5_3
xulrunner-devel-unstable
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 11 CVEs
before 0:1.9.0.12-1.el5_3
0:1.9.0.12-1.el5_3
firefox
Red Hat:enterprise_linux:5::client
From an advisory covering 11 CVEs
before 0:3.0.12-1.el5_3
0:3.0.12-1.el5_3
firefox-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 11 CVEs
before 0:3.0.12-1.el5_3
0:3.0.12-1.el5_3
xulrunner
Red Hat:enterprise_linux:5::client
From an advisory covering 11 CVEs
before 0:1.9.0.12-1.el5_3
0:1.9.0.12-1.el5_3
xulrunner-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 11 CVEs
before 0:1.9.0.12-1.el5_3
0:1.9.0.12-1.el5_3
firefox
Red Hat:enterprise_linux:5::server
From an advisory covering 11 CVEs
before 0:3.0.12-1.el5_3
0:3.0.12-1.el5_3
firefox-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 11 CVEs
before 0:3.0.12-1.el5_3
0:3.0.12-1.el5_3
xulrunner
Red Hat:enterprise_linux:5::server
From an advisory covering 11 CVEs
before 0:1.9.0.12-1.el5_3
0:1.9.0.12-1.el5_3
xulrunner-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 11 CVEs
before 0:1.9.0.12-1.el5_3
0:1.9.0.12-1.el5_3
xulrunner-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 11 CVEs
before 0:1.9.0.12-1.el5_3
0:1.9.0.12-1.el5_3
xulrunner-devel-unstable
Red Hat:enterprise_linux:5::server
From an advisory covering 11 CVEs
before 0:1.9.0.12-1.el5_3
0:1.9.0.12-1.el5_3
seamonkey
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-chat
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-debuginfo
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-devel
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-dom-inspector
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-js-debugger
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-mail
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nspr
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nspr-devel
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nss
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nss-devel
Red Hat:enterprise_linux:3::as
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-chat
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-debuginfo
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-devel
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-dom-inspector
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-js-debugger
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-mail
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nspr
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nspr-devel
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nss
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nss-devel
Red Hat:enterprise_linux:3::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-chat
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-debuginfo
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-devel
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-dom-inspector
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-js-debugger
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-mail
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nspr
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nspr-devel
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nss
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nss-devel
Red Hat:enterprise_linux:3::es
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-chat
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-debuginfo
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-devel
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-dom-inspector
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-js-debugger
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-mail
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nspr
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nspr-devel
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nss
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey-nss-devel
Red Hat:enterprise_linux:3::ws
From an advisory covering 4 CVEs
before 0:1.0.9-0.40.el3
0:1.0.9-0.40.el3
seamonkey
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-chat
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-dom-inspector
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-js-debugger
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-mail
Red Hat:enterprise_linux:4::as
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-chat
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-dom-inspector
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-js-debugger
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-mail
Red Hat:enterprise_linux:4::desktop
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-chat
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-dom-inspector
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-js-debugger
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-mail
Red Hat:enterprise_linux:4::es
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-chat
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-dom-inspector
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-js-debugger
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
seamonkey-mail
Red Hat:enterprise_linux:4::ws
From an advisory covering 4 CVEs
before 0:1.0.9-45.el4_8
0:1.0.9-45.el4_8
thunderbird
Red Hat:enterprise_linux:5::client
From an advisory covering 19 CVEs
before 0:2.0.0.24-2.el5_4
0:2.0.0.24-2.el5_4
thunderbird-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 19 CVEs
before 0:2.0.0.24-2.el5_4
0:2.0.0.24-2.el5_4
thunderbird
Red Hat:rhel_productivity:5
From an advisory covering 19 CVEs
before 0:2.0.0.24-2.el5_4
0:2.0.0.24-2.el5_4
thunderbird-debuginfo
Red Hat:rhel_productivity:5
From an advisory covering 19 CVEs
before 0:2.0.0.24-2.el5_4
0:2.0.0.24-2.el5_4
thunderbird
Red Hat:enterprise_linux:4::as
From an advisory covering 19 CVEs
before 0:1.5.0.12-25.el4
0:1.5.0.12-25.el4
thunderbird-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 19 CVEs
before 0:1.5.0.12-25.el4
0:1.5.0.12-25.el4
thunderbird
Red Hat:enterprise_linux:4::desktop
From an advisory covering 19 CVEs
before 0:1.5.0.12-25.el4
0:1.5.0.12-25.el4
thunderbird-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 19 CVEs
before 0:1.5.0.12-25.el4
0:1.5.0.12-25.el4
thunderbird
Red Hat:enterprise_linux:4::es
From an advisory covering 19 CVEs
before 0:1.5.0.12-25.el4
0:1.5.0.12-25.el4
thunderbird-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 19 CVEs
before 0:1.5.0.12-25.el4
0:1.5.0.12-25.el4
thunderbird
Red Hat:enterprise_linux:4::ws
From an advisory covering 19 CVEs
before 0:1.5.0.12-25.el4
0:1.5.0.12-25.el4
thunderbird-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 19 CVEs
before 0:1.5.0.12-25.el4
0:1.5.0.12-25.el4

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-2009-2463 is a high vulnerability (CVSS 10.0) in Mozilla Firefox, published July 22, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.43%, the 93rd percentile. Fixed in nspr 4.8.2-1.

References

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