cracklib: Stack-based buffer overflow when parsing large GECOS field
Published Sep 7, 2016
7.8
HIGHCVSS 3.1
EPSS 0.74%
Description
Stack-based buffer overflow in the FascistGecosUser function in lib/fascist.c in cracklib allows local users to cause a denial of service (application crash) or gain privileges via a long GECOS field, involving longbuffer.
Affected products
No data.
Configuration 1
- ≥ 2.9.0 · < 2.9.6
Configuration 3
- 8.0
No data.
Red Hat Enterprise Linux 5
cracklib
Will not fix
Red Hat Enterprise Linux 6
cracklib
Will not fix
Red Hat Enterprise Linux 7
cracklib
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | cracklib | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | cracklib | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | cracklib | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:L/AC:L/Au:N/C:C/I:C/A:C
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.74% (0.00741) | 52.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.75% (0.00747) | 49.85th | v5 (v2026.06.15) |
| Feb 26, 2026 | 2.36% (0.02360) | 84.67th | v4 (v2025.03.14) |
| Jul 13, 2025 | 3.52% (0.03522) | 87.13th | v4 (v2025.03.14) |
| Jun 19, 2025 | 5.51% (0.05510) | 89.74th | v4 (v2025.03.14) |
| Mar 28, 2025 | 1.81% (0.01813) | 81.22th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.18% (0.00181) | 37.62th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
References (11)
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00122.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/08/16/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/92478 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2016-6318 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1364944 Issue Tracking
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.debian.org/debian-lts-announce/2020/05/msg00023.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-6318
- https://security.gentoo.org/glsa/201612-25 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-6318
Change history (0)
No recorded changes yet.