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Fencer Vulns
high 7.5

CVE-2008-0304 json

Heap-based buffer overflow in Mozilla Thunderbird before 2.0.0.12 and SeaMonkey before 1.1.8 might allow remote attackers to execute arbitr…

published 2008-02-29 18 y ago modified 2026-06-16 4 mo ago also EUVD-2008-0314

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.0%
EPSS 6.0% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

Heap-based buffer overflow in Mozilla Thunderbird before 2.0.0.12 and SeaMonkey before 1.1.8 might allow remote attackers to execute arbitrary code via a crafted external-body MIME type in an e-mail message, related to an incorrect memory allocation during message preview.

Patch / fix

  • thunderbird RHEL 4 1.5.0.12-8.el4
  • thunderbird RHEL 5 PRODUCTIVITY, RHEL 5 1.5.0.12-8.el5
  • seamonkey RHEL 2.1 1.0.9-0.9.el2
  • seamonkey RHEL 3 1.0.9-0.9.el3
  • seamonkey RHEL 4 1.0.9-9.el4
  • seamonkey-nss RHEL 2.1 1.0.9-0.9.el2
  • seamonkey-nss RHEL 3 1.0.9-0.9.el3
  • seamonkey-chat RHEL 2.1 1.0.9-0.9.el2

red hat advisories RHSA-2008:0105RHSA-2008:0104

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2008-0304 updated

thunderbird/seamonkey: MIME External-Body Heap Overflow Vulnerability

  • Red Hat Desktop version 3 seamonkey 1.0.9-0.9.el3, seamonkey-nss 1.0.9-0.9.el3, seamonkey-chat 1.0.9-0.9.el3, seamonkey-mail 1.0.9-0.9.el3, seamonkey-nspr 1.0.9-0.9.el3, seamonkey-js-debugger 1.0.9-0.9.el3, +1 more Red Hat Enterprise Linux AS (Advanced Server) version 2.1 seamonkey 1.0.9-0.9.el2, seamonkey-nss 1.0.9-0.9.el2, seamonkey-chat 1.0.9-0.9.el2, seamonkey-mail 1.0.9-0.9.el2, seamonkey-nspr 1.0.9-0.9.el2, seamonkey-js-debugger 1.0.9-0.9.el2, +1 more Red Hat Enterprise Linux AS version 3 seamonkey 1.0.9-0.9.el3, seamonkey-nss 1.0.9-0.9.el3, seamonkey-chat 1.0.9-0.9.el3, seamonkey-mail 1.0.9-0.9.el3, seamonkey-nspr 1.0.9-0.9.el3, seamonkey-js-debugger 1.0.9-0.9.el3, +1 more Red Hat Enterprise Linux AS version 4 seamonkey 1.0.9-9.el4, seamonkey-chat 1.0.9-9.el4, seamonkey-mail 1.0.9-9.el4, thunderbird 1.5.0.12-8.el4, seamonkey-js-debugger 1.0.9-9.el4, seamonkey-dom-inspector 1.0.9-9.el4
    fixed: vendor fix RHSA-2008:0104
  • Red Hat Enterprise Linux Desktop (v. 5 client) thunderbird 1.5.0.12-8.el5
    fixed: vendor fix RHSA-2008:0105
  • Red Hat Enterprise Linux Desktop version 4 seamonkey 1.0.9-9.el4, seamonkey-chat 1.0.9-9.el4, seamonkey-mail 1.0.9-9.el4, thunderbird 1.5.0.12-8.el4, seamonkey-js-debugger 1.0.9-9.el4, seamonkey-dom-inspector 1.0.9-9.el4 Red Hat Enterprise Linux ES version 2.1 seamonkey 1.0.9-0.9.el2, seamonkey-nss 1.0.9-0.9.el2, seamonkey-chat 1.0.9-0.9.el2, seamonkey-mail 1.0.9-0.9.el2, seamonkey-nspr 1.0.9-0.9.el2, seamonkey-js-debugger 1.0.9-0.9.el2, +1 more Red Hat Enterprise Linux ES version 3 seamonkey 1.0.9-0.9.el3, seamonkey-nss 1.0.9-0.9.el3, seamonkey-chat 1.0.9-0.9.el3, seamonkey-mail 1.0.9-0.9.el3, seamonkey-nspr 1.0.9-0.9.el3, seamonkey-js-debugger 1.0.9-0.9.el3, +1 more Red Hat Enterprise Linux ES version 4 seamonkey 1.0.9-9.el4, seamonkey-chat 1.0.9-9.el4, seamonkey-mail 1.0.9-9.el4, thunderbird 1.5.0.12-8.el4, seamonkey-js-debugger 1.0.9-9.el4, seamonkey-dom-inspector 1.0.9-9.el4
    fixed: vendor fix RHSA-2008:0104
  • Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird 1.5.0.12-8.el5
    fixed: vendor fix RHSA-2008:0105
  • Red Hat Enterprise Linux WS version 2.1 seamonkey 1.0.9-0.9.el2, seamonkey-nss 1.0.9-0.9.el2, seamonkey-chat 1.0.9-0.9.el2, seamonkey-mail 1.0.9-0.9.el2, seamonkey-nspr 1.0.9-0.9.el2, seamonkey-js-debugger 1.0.9-0.9.el2, +1 more Red Hat Enterprise Linux WS version 3 seamonkey 1.0.9-0.9.el3, seamonkey-nss 1.0.9-0.9.el3, seamonkey-chat 1.0.9-0.9.el3, seamonkey-mail 1.0.9-0.9.el3, seamonkey-nspr 1.0.9-0.9.el3, seamonkey-js-debugger 1.0.9-0.9.el3, +1 more Red Hat Enterprise Linux WS version 4 seamonkey 1.0.9-9.el4, seamonkey-chat 1.0.9-9.el4, seamonkey-mail 1.0.9-9.el4, thunderbird 1.5.0.12-8.el4, seamonkey-js-debugger 1.0.9-9.el4, seamonkey-dom-inspector 1.0.9-9.el4 Red Hat Linux Advanced Workstation 2.1 seamonkey 1.0.9-0.9.el2, seamonkey-nss 1.0.9-0.9.el2, seamonkey-chat 1.0.9-0.9.el2, seamonkey-mail 1.0.9-0.9.el2, seamonkey-nspr 1.0.9-0.9.el2, seamonkey-js-debugger 1.0.9-0.9.el2, +1 more
    fixed: vendor fix RHSA-2008:0104

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

6.05% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.