Memory leak in Libxul, as used in Mozilla Firefox 3.0.5 and other products, allows remote attackers to cause a denial of service (memory consumption and browser hang) via a long CLASS attribute in an HR element in an HTML document
Published Jan 2, 2009
5.0
MEDIUMCVSS 2.0
EPSS 2.07%
Description
Memory leak in Libxul, as used in Mozilla Firefox 3.0.5 and other products, allows remote attackers to cause a denial of service (memory consumption and browser hang) via a long CLASS attribute in an HR element in an HTML document.
Affected products
Remediation
Red Hat statement
Red Hat does not consider a crash of a client application such as Firefox to be a security issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.07% (0.02068) | 80.73th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.07% (0.02068) | 78.86th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.50% (0.00501) | 63.89th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.72% (0.00716) | 81.18th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.72% (0.00716) | 79.91th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.72% (0.00716) | 77.47th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
References (6)
- http://jbrownsec.blogspot.com/2008/12/new-year-research-are-upon-us.html x_refsource_MISC
- http://www.packetstormsecurity.org/0812-exploits/mzff_libxul_ml.txt x_refsource_MISCExploit
- https://access.redhat.com/security/cve/CVE-2008-5822 Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/47758 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2008-5822
- https://www.cve.org/CVERecord?id=CVE-2008-5822
| Link | Providers | Tags |
|---|---|---|
| http://jbrownsec.blogspot.com/2008/12/new-year-research-are-upon-us.html | x_refsource_MISC | |
| http://www.packetstormsecurity.org/0812-exploits/mzff_libxul_ml.txt | x_refsource_MISCExploit | |
| https://access.redhat.com/security/cve/CVE-2008-5822 | Vendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/47758 | vdb-entryx_refsource_XF | |
| https://nvd.nist.gov/vuln/detail/CVE-2008-5822 | ||
| https://www.cve.org/CVERecord?id=CVE-2008-5822 |
Change history (0)
No recorded changes yet.