The strftime function in the GNU C Library (aka glibc or libc6) before 2.23 allows…
Priority MEDIUM 47CWE-189Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- Partial Red Hat: 16 fixed, 3 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.048 92nd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 16 fixed, 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 24
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp2:*:*:*:*:*:* | 11 sp2 | Vulnerable | SUSE |
| cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp3:*:*:*:*:*:* | 11 sp3 | Vulnerable | SUSE |
| cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp4:*:*:*:*:*:* | 11 sp4 | Vulnerable | SUSE |
| cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:* | 13.2 | Vulnerable | openSUSE |
| cpe:2.3:o:suse:linux_enterprise_desktop:11:sp3:*:*:*:*:*:* | 11 sp3 | Vulnerable | SUSE |
| cpe:2.3:o:suse:linux_enterprise_desktop:11:sp4:*:*:*:*:*:* | 11 sp4 | Vulnerable | SUSE |
| cpe:2.3:o:suse:linux_enterprise_desktop:12:*:*:*:*:*:*:* | 12 | Vulnerable | SUSE |
| cpe:2.3:o:suse:linux_enterprise_desktop:12:sp1:*:*:*:*:*:* | 12 sp1 | Vulnerable | SUSE |
| cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:ltss:*:*:* | 11 sp2 | Vulnerable | SUSE |
| cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:*:*:*:* | 11 sp3 | Vulnerable | SUSE |
- cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp2:*:*:*:*:*:* Versions 11 sp2 Vulnerable ·SUSE
- cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp3:*:*:*:*:*:* Versions 11 sp3 Vulnerable ·SUSE
- cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp4:*:*:*:*:*:* Versions 11 sp4 Vulnerable ·SUSE
- cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:* Versions 13.2 Vulnerable ·openSUSE
- cpe:2.3:o:suse:linux_enterprise_desktop:11:sp3:*:*:*:*:*:* Versions 11 sp3 Vulnerable ·SUSE
- cpe:2.3:o:suse:linux_enterprise_desktop:11:sp4:*:*:*:*:*:* Versions 11 sp4 Vulnerable ·SUSE
- cpe:2.3:o:suse:linux_enterprise_desktop:12:*:*:*:*:*:*:* Versions 12 Vulnerable ·SUSE
- cpe:2.3:o:suse:linux_enterprise_desktop:12:sp1:*:*:*:*:*:* Versions 12 sp1 Vulnerable ·SUSE
- cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:ltss:*:*:* Versions 11 sp2 Vulnerable ·SUSE
- cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:*:*:*:* Versions 11 sp3 Vulnerable ·SUSE
Show 14 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:*:vmware:*:* | 11 sp3 | Vulnerable | SUSE |
| cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:* | 11 sp4 | Vulnerable | SUSE |
| cpe:2.3:o:suse:linux_enterprise_server:12:sp1:*:*:*:*:*:* | 12 sp1 | Vulnerable | SUSE |
| cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp3:*:*:*:*:*:* | 11 sp3 | Vulnerable | SUSE |
| cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp4:*:*:*:*:*:* | 11 sp4 | Vulnerable | SUSE |
| cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:*:*:*:*:*:*:* | 12 | Vulnerable | SUSE |
| cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:sp1:*:*:*:*:*:* | 12 sp1 | Vulnerable | SUSE |
| cpe:2.3:o:suse:suse_linux_enterprise_server:12:*:*:*:*:*:*:* | 12 | Vulnerable | SUSE |
| cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* | 12.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* | 15.10 | Vulnerable | Canonical |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* | 23 | Vulnerable | Fedoraproject |
| cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* | up to 2.22 | Vulnerable | GNU |
- cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:*:vmware:*:* Versions 11 sp3 Vulnerable ·SUSE
- cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:* Versions 11 sp4 Vulnerable ·SUSE
- cpe:2.3:o:suse:linux_enterprise_server:12:sp1:*:*:*:*:*:* Versions 12 sp1 Vulnerable ·SUSE
- cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp3:*:*:*:*:*:* Versions 11 sp3 Vulnerable ·SUSE
- cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp4:*:*:*:*:*:* Versions 11 sp4 Vulnerable ·SUSE
- cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:*:*:*:*:*:*:* Versions 12 Vulnerable ·SUSE
- cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:sp1:*:*:*:*:*:* Versions 12 sp1 Vulnerable ·SUSE
- cpe:2.3:o:suse:suse_linux_enterprise_server:12:*:*:*:*:*:*:* Versions 12 Vulnerable ·SUSE
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* Versions 12.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Versions 15.10 Vulnerable ·Canonical
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* Versions 23 Vulnerable ·Fedoraproject
- cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* Versions up to 2.22 Vulnerable ·GNU
Remediation
Red Hat 2 advisories
- RHSA-2017:1916 Released 2017-08-01 · Red Hat rating Moderateglibc security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) glibc-2.17-196.el7, glibc-common-2.17-196.el7, glibc-devel-2.17-196.el7 +3
- Red Hat Enterprise Linux Client Optional (v. 7) glibc-static-2.17-196.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) glibc-2.17-196.el7, glibc-common-2.17-196.el7, glibc-devel-2.17-196.el7 +3
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) glibc-static-2.17-196.el7
- Red Hat Enterprise Linux Server (v. 7) glibc-2.17-196.el7, glibc-2.17-196.el7.ppc, glibc-common-2.17-196.el7 +5
- Red Hat Enterprise Linux Server Optional (v. 7) glibc-static-2.17-196.el7, glibc-static-2.17-196.el7.ppc
- Red Hat Enterprise Linux Workstation (v. 7) glibc-2.17-196.el7, glibc-common-2.17-196.el7, glibc-devel-2.17-196.el7 +3
- Red Hat Enterprise Linux Workstation Optional (v. 7) glibc-static-2.17-196.el7
- RHSA-2017:0680 Released 2017-03-21 · Red Hat rating Moderateglibc security and bug fix update
- Red Hat Enterprise Linux Desktop (v. 6) glibc-2.12-1.209.el6, glibc-common-2.12-1.209.el6, glibc-devel-2.12-1.209.el6 +3
- Red Hat Enterprise Linux Desktop Optional (v. 6) glibc-static-2.12-1.209.el6
- Red Hat Enterprise Linux HPC Node (v. 6) glibc-2.12-1.209.el6, glibc-common-2.12-1.209.el6, glibc-devel-2.12-1.209.el6 +3
- Red Hat Enterprise Linux HPC Node Optional (v. 6) glibc-static-2.12-1.209.el6
- Red Hat Enterprise Linux Server (v. 6) glibc-2.12-1.209.el6, glibc-2.12-1.209.el6.ppc, glibc-common-2.12-1.209.el6 +5
- Red Hat Enterprise Linux Server Optional (v. 6) glibc-static-2.12-1.209.el6, glibc-static-2.12-1.209.el6.ppc
- Red Hat Enterprise Linux Workstation (v. 6) glibc-2.12-1.209.el6, glibc-common-2.12-1.209.el6, glibc-devel-2.12-1.209.el6 +3
- Red Hat Enterprise Linux Workstation Optional (v. 6) glibc-static-2.12-1.209.el6
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2017:1916 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2017:1916 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2017:1916 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2017:1916 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2017:0680 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2017:0680 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2017:0680 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2017:0680 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2017:0680 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2017:1916 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2017:0680 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2017:1916 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2017:0680 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2017:1916 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2017:0680 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2017:1916 |
Timeline
- 2026-10-02 Threatist record created from CVE-2015-8776
- 2026-10-03 Alias added: GHSA-mm79-9vr7-wx53
References
Advisory 16
- SUSE-SU-2016:0471
- FEDORA-2016-68abc0be35
- RHSA-2017:1916
- DSA-3481
- openSUSE-SU-2016:0510
- SUSE-SU-2016:0470
- RHSA-2017:0680
- USN-2985-2
- GLSA-201702-11
- GLSA-201602-02
- SUSE-SU-2016:0472
- SUSE-SU-2016:0473
- [libc-alpha] 20160219 The GNU C Library version 2.23 is now available
- [oss-security] 20160119 CVE assignment request for security bugs fixed in glibc 2.23
- DSA-3480
- USN-2985-1
Sources
- CVE-2015-8776 · CVE Program
- CVE-2015-8776 · NVD
- FIRST EPSS
- GHSA-mm79-9vr7-wx53 · GitHub Advisory Database · CC BY 4.0
- CVE-2015-8776 · Red Hat security data · CC BY 4.0
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