glibc: Segmentation fault caused by passing out-of-range data to strftime()
Published Apr 19, 2016
9.1
CRITICALCVSS 3.0
EPSS 4.80%
Description
The strftime function in the GNU C Library (aka glibc or libc6) before 2.23 allows context-dependent attackers to cause a denial of service (application crash) or possibly obtain sensitive information via an out-of-range time value.
Affected products
No data.
Configuration 1
- 11
- 11
- 11
- 13.2
- 11
- 11
- 12
- 12
- 11
- 11
- 11
- 11
- 12
- 11
- 11
- 12
- 12
- 12
Configuration 2
- 12.04
- 14.04
- 15.10
Configuration 3
- 8.0
Configuration 4
- 23
No data.
Red Hat Enterprise Linux 6
glibc-0:2.12-1.209.el6
Fixed · RHSA-2017:0680
Red Hat Enterprise Linux 7
glibc-0:2.17-196.el7
Fixed · RHSA-2017:1916
Red Hat Enterprise Linux 5
compat-glibc
Will not fix
Red Hat Enterprise Linux 5
glibc
Will not fix
Red Hat Enterprise Linux 6
compat-glibc
Will not fix
Red Hat Enterprise Linux 7
compat-glibc
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | glibc-0:2.12-1.209.el6 | Fixed | RHSA-2017:0680 |
| Red Hat Enterprise Linux 7 | glibc-0:2.17-196.el7 | Fixed | RHSA-2017:1916 |
| Red Hat Enterprise Linux 5 | compat-glibc | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | glibc | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | compat-glibc | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | compat-glibc | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
Check time values before they are passed to strftime, or call strftime only with struct tm values computed by gmtime or localtime.
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:H/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
AV:N/AC:L/Au:N/C:P/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 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 (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.80% (0.04800) | 91.67th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.61% (0.04613) | 90.46th | v5 (v2026.06.15) |
| Apr 23, 2026 | 4.26% (0.04265) | 88.85th | v4 (v2025.03.14) |
| Apr 18, 2026 | 5.31% (0.05306) | 90.04th | v4 (v2025.03.14) |
| Jan 5, 2026 | 8.05% (0.08055) | 91.85th | v4 (v2025.03.14) |
| Oct 1, 2025 | 6.32% (0.06316) | 90.63th | v4 (v2025.03.14) |
| Jul 26, 2025 | 4.92% (0.04918) | 89.16th | v4 (v2025.03.14) |
| Mar 30, 2025 | 6.89% (0.06886) | 90.49th | v4 (v2025.03.14) |
| Mar 29, 2025 | 11.71% (0.11714) | 89.44th | v4 (v2025.03.14) |
| Mar 19, 2025 | 6.89% (0.06886) | 90.23th | v4 (v2025.03.14) |
| Mar 17, 2025 | 8.26% (0.08260) | 91.62th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.65% (0.00652) | 80.13th | v3 (v2023.03.01) |
| Jul 20, 2024 | 0.65% (0.00652) | 79.68th | v3 (v2023.03.01) |
| May 19, 2024 | 0.62% (0.00623) | 78.86th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.54% (0.00543) | 76.65th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.54% (0.00543) | 73.83th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (23)
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184626.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00037.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00038.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00039.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00042.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0680.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2016/dsa-3480 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2016/dsa-3481 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/19/11 mailing-listx_refsource_MLISTThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/20/1 mailing-listx_refsource_MLISTIssue Tracking
- http://www.securityfocus.com/bid/83277 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-2985-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-2985-2 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1916 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2015-8776 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1300299 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-8776
- https://security.gentoo.org/glsa/201602-02 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://security.gentoo.org/glsa/201702-11 vendor-advisoryx_refsource_GENTOO
- https://sourceware.org/bugzilla/show_bug.cgi?id=18985 x_refsource_CONFIRMIssue Tracking
- https://www.cve.org/CVERecord?id=CVE-2015-8776
- https://www.sourceware.org/ml/libc-alpha/2016-02/msg00502.html mailing-listx_refsource_MLISTVendor Advisory
Change history (0)
No recorded changes yet.