libxslt: math.random() in xslt uses unseeded randomness
Published Apr 5, 2017
5.3
MEDIUMCVSS 3.0
EPSS 2.39%
Description
In libxslt 1.1.29 and earlier, the EXSLT math.random function was not initialized with a random seed during startup, which could cause usage of this function to produce predictable outputs.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
libxslt
Will not fix
Red Hat Enterprise Linux 6
libxslt
Will not fix
Red Hat Enterprise Linux 7
libxslt
Will not fix
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
libxslt
Will not fix
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
libxslt
Will not fix
Red Hat Enterprise MRG 2
libxslt
Will not fix
Red Hat OpenStack Platform 10 (Newton)
libxslt
Will not fix
Red Hat OpenStack Platform 8 (Liberty)
libxslt
Will not fix
Red Hat OpenStack Platform 9 (Mitaka)
libxslt
Will not fix
Red Hat Storage 3
libxslt
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libxslt | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | libxslt | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | libxslt | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | libxslt | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | libxslt | Will not fix | n/a |
| Red Hat Enterprise MRG 2 | libxslt | Will not fix | n/a |
| Red Hat OpenStack Platform 10 (Newton) | libxslt | Will not fix | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | libxslt | Will not fix | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | libxslt | Will not fix | n/a |
| Red Hat Storage 3 | libxslt | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
The xslt random function provided by libxslt does not offer any security or cryptography guarantees. Applications using libxslt that rely on non-repeatable randomness should be seeding the system PRNG (srand()) themselves, as they would if calling rand() directly.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
AV:N/AC:L/Au:N/C:P/I:N/A:N
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 3, 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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 2.39% (0.02393) | 83.40th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.39% (0.02393) | 81.75th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.98% (0.00978) | 74.70th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.71% (0.07706) | 86.24th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.74% (0.00744) | 71.31th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00060) | 27.55th | v3 (v2023.03.01) |
| May 3, 2024 | 0.09% (0.00089) | 37.60th | v3 (v2023.03.01) |
| Apr 4, 2024 | 0.09% (0.00086) | 35.49th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.08% (0.00083) | 33.47th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00060) | 23.35th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
References (6)
- https://access.redhat.com/security/cve/CVE-2015-9019 Vendor Advisory
- https://bugzilla.gnome.org/show_bug.cgi?id=758400 x_refsource_MISCIssue TrackingPatchThird Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1439548 Issue Tracking
- https://bugzilla.suse.com/show_bug.cgi?id=934119 x_refsource_MISCIssue TrackingPatchThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2015-9019
- https://www.cve.org/CVERecord?id=CVE-2015-9019
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2015-9019 | Vendor Advisory | |
| https://bugzilla.gnome.org/show_bug.cgi?id=758400 | x_refsource_MISCIssue TrackingPatchThird Party AdvisoryVDB Entry | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1439548 | Issue Tracking | |
| https://bugzilla.suse.com/show_bug.cgi?id=934119 | x_refsource_MISCIssue TrackingPatchThird Party AdvisoryVDB Entry | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-9019 | ||
| https://www.cve.org/CVERecord?id=CVE-2015-9019 |
Change history (0)
No recorded changes yet.