Heap-based buffer overflow in the flask_security_label function in Xen 3.3, when compiled with the XSM:FLASK module, allows unprivileged domain users (domU) to execute arbitrary code via the flask_op hypercall
Published Aug 14, 2008
6.8
MEDIUMCVSS 2.0
EPSS 2.94%
Description
Heap-based buffer overflow in the flask_security_label function in Xen 3.3, when compiled with the XSM:FLASK module, allows unprivileged domain users (domU) to execute arbitrary code via the flask_op hypercall.
Affected products
No data.
- 3.3
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the version of Xen hypervisor as shipped with Red Hat Enterprise Linux 5, as it does not support XSM.
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:M/Au:N/C:P/I:P/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 1, 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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.94% (0.02938) | 86.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.94% (0.02938) | 85.27th | v5 (v2026.06.15) |
| Mar 17, 2025 | 2.26% (0.02262) | 83.46th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.48% (0.00485) | 76.79th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.48% (0.00485) | 75.28th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.48% (0.00485) | 72.26th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.77% (0.02768) | 82.99th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.77% (0.02768) | 81.30th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.77% (0.02768) | 63.79th | v2 (v2022.01.01) |
References (12)
- http://invisiblethingslab.com/bh08/part2.pdf x_refsource_MISC
- http://secunia.com/advisories/31561 third-party-advisoryx_refsource_SECUNIA
- http://theinvisiblethings.blogspot.com/2008/08/our-xen-0wning-trilogy-highlights.html x_refsource_MISC
- http://www.nabble.com/-PATCH--XSM--FLASK--Argument-handling-bugs-in-XSM:FLASK-to18536032.html mailing-listx_refsource_MLISTPatch
- http://www.securityfocus.com/bid/30834 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1020731 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2008/2426 vdb-entryx_refsource_VUPEN
- http://xenbits.xensource.com/xen-3.3-testing.hg?rev/fa66b33f975a x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2008-3687 Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/44608 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2008-3687
- https://www.cve.org/CVERecord?id=CVE-2008-3687
| Link | Providers | Tags |
|---|---|---|
| http://invisiblethingslab.com/bh08/part2.pdf | x_refsource_MISC | |
| http://secunia.com/advisories/31561 | third-party-advisoryx_refsource_SECUNIA | |
| http://theinvisiblethings.blogspot.com/2008/08/our-xen-0wning-trilogy-highlights.html | x_refsource_MISC | |
| http://www.nabble.com/-PATCH--XSM--FLASK--Argument-handling-bugs-in-XSM:FLASK-to18536032.html | mailing-listx_refsource_MLISTPatch | |
| http://www.securityfocus.com/bid/30834 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1020731 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2008/2426 | vdb-entryx_refsource_VUPEN | |
| http://xenbits.xensource.com/xen-3.3-testing.hg?rev/fa66b33f975a | x_refsource_CONFIRM | |
| https://access.redhat.com/security/cve/CVE-2008-3687 | Vendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/44608 | vdb-entryx_refsource_XF | |
| https://nvd.nist.gov/vuln/detail/CVE-2008-3687 | ||
| https://www.cve.org/CVERecord?id=CVE-2008-3687 |
Change history (0)
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