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CVE-2008-5012

16
FAUCET Score

CVE-2008-5012 describes a vulnerability in Mozilla Firefox 2.x, Thunderbird 2.x, and SeaMonkey 1.x where improper handling of HTTP redirects within a canvas element allows attackers to bypass the same-origin policy. This enables unauthorized access to images not directly accessible to the attacker, and can be leveraged to enumerate client-side software. The vulnerability has a CVSS score of 5.0 (Medium), indicating a network-based attack with low complexity and potential for partial confidentiality impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.0.0.17CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
0.8CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.8:*:*:*:*:*:*:*
0.9CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.9:*:*:*:*:*:*:*
0.9CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.9:rc:*:*:*:*:*:*
0.9.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.9.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.04%
Probability of exploitation in next 30 days
EPSS Percentile
79.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0204 is in the 68th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: seamonkey-0:1.0.9-0.21.el2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: seamonkey-0:1.0.9-0.25.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.12-17.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.9-28.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:2.0.0.18-1.el5
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2008-5012Moderate

Mozilla Image stealing via canvas and HTTP redirect

Nov 12, 2008

References

lists.opensuse.org / opensuse-security-announce/2008-11/msg00004.html
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
scarybeastsecurity.blogspot.com / 2008/11/firefox-cross-domain-image-theft-and.html
scary.beasts.org / security/CESA-2008-009.html
secunia.com / advisories/32684
secunia.com / advisories/32693
secunia.com / advisories/32694
secunia.com / advisories/32714
secunia.com / advisories/32715
secunia.com / advisories/32778
secunia.com / advisories/32798
secunia.com / advisories/32845
secunia.com / advisories/32853
secunia.com / advisories/33433
secunia.com / advisories/33434
secunia.com / advisories/34501
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10750
sunsolve.sun.com / search/document.do
redhat.com / archives/fedora-package-announce/2008-November/msg00366.html
ubuntu.com / usn/usn-667-1
debian.org / security/2008/dsa-1669
debian.org / security/2008/dsa-1671
debian.org / security/2009/dsa-1696
debian.org / security/2009/dsa-1697
mandriva.com / security/advisories
mandriva.com / security/advisories
mozilla.org / security/announce/2008/mfsa2008-48.html
Vendor Advisory
redhat.com / support/errata/RHSA-2008-0976.html
redhat.com / support/errata/RHSA-2008-0977.html
securityfocus.com / archive/1/498468
securityfocus.com / bid/32281
securityfocus.com / bid/32351
securitytracker.com / id
us-cert.gov / cas/techalerts/TA08-319A.html
US Government Resource
vupen.com / english/advisories/2008/3146
vupen.com / english/advisories/2009/0977