(pt_chown): Improper pseudotty ownership and permissions changes when granting access to the slave pseudoterminal
Published Oct 9, 2013
2.6
LOWCVSS 2.0
EPSS 0.35%
Description
pt_chown in GNU C Library (aka glibc or libc6) before 2.18 does not properly check permissions for tty files, which allows local users to change the permission on the files and obtain access to arbitrary pseudo-terminals by leveraging a FUSE file system.
Affected products
No data.
Configuration 1
- ≤ 2.17
- 2.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.0.6
- 2.1
- 2.1.1
- 2.1.1.6
- 2.1.2
- 2.1.3
- 2.1.9
- 2.10.1
- 2.11
- 2.11.1
- 2.11.2
- 2.11.3
- 2.12.1
- 2.12.2
- 2.13
- 2.14
- 2.14.1
- 2.15
- 2.16
Configuration 2
- 18
- 19
No data.
Red Hat Enterprise Linux 5
glibc
Not affected
Red Hat Enterprise Linux 6
glibc
Not affected
Red Hat Enterprise Linux 7
glibc
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | glibc | Not affected | n/a |
| Red Hat Enterprise Linux 6 | glibc | Not affected | n/a |
| Red Hat Enterprise Linux 7 | glibc | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not Vulnerable. This issue does not affect the version of glibc as shipped with Red Hat Enterprise Linux 5 and 6.
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:L/AC:H/Au:N/C:P/I:P/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 2, 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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.35% (0.00352) | 26.55th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.35% (0.00352) | 26.85th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00074) | 19.86th | 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 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (13)
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00019.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/55113 third-party-advisoryx_refsource_SECUNIA
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:283 vendor-advisoryx_refsource_MANDRIVA
- http://www.ubuntu.com/usn/USN-2985-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2985-2 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2013-2207 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=976408 x_refsource_CONFIRMPatchIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2013-2207
- https://security.gentoo.org/glsa/201503-04 vendor-advisoryx_refsource_GENTOO
- https://sourceware.org/bugzilla/show_bug.cgi?id=15755 x_refsource_CONFIRMPatch
- https://sourceware.org/ml/libc-alpha/2013-08/msg00160.html mailing-listx_refsource_MLIST
- https://www.cve.org/CVERecord?id=CVE-2013-2207
Change history (0)
No recorded changes yet.