libFS: Sign extension issues resulting in heap-based buffer overflow
Published Jun 15, 2013
6.8
MEDIUMCVSS 2.0
EPSS 1.26%
Description
X.org libFS 1.0.4 and earlier allows X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to an unexpected sign extension in the FSOpenServer function.
Affected products
Remediation
Red Hat statement
This issue affects the libFS package in Red Hat Enterprise Linux 5. Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not planned to be fixed in Red Hat Enterprise Linux 5 as it is now in Production 3 Phase of the support and maintenance life cycle: https://access.redhat.com/support/policy/updates/errata/
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.26% (0.01262) | 68.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.26% (0.01262) | 65.69th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.50% (0.00499) | 63.83th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.47% (0.00474) | 76.48th | v3 (v2023.03.01) |
| Jul 9, 2024 | 0.47% (0.00474) | 75.86th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.55% (0.00554) | 76.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.55% (0.00554) | 74.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
References (9)
- http://www.debian.org/security/2013/dsa-2687 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2013/05/23/3 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/60130 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-1853-1 vendor-advisoryx_refsource_UBUNTU
- http://www.x.org/wiki/Development/Security/Advisory-2013-05-23 x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2013-1996 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=960360 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2013-1996
- https://www.cve.org/CVERecord?id=CVE-2013-1996
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2013/dsa-2687 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.openwall.com/lists/oss-security/2013/05/23/3 | mailing-listx_refsource_MLIST | |
| http://www.securityfocus.com/bid/60130 | vdb-entryx_refsource_BID | |
| http://www.ubuntu.com/usn/USN-1853-1 | vendor-advisoryx_refsource_UBUNTU | |
| http://www.x.org/wiki/Development/Security/Advisory-2013-05-23 | x_refsource_CONFIRMVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2013-1996 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=960360 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2013-1996 | ||
| https://www.cve.org/CVERecord?id=CVE-2013-1996 |
Change history (0)
No recorded changes yet.