HIGH
screen: Privilege escalation via unsafe logfile handling
Published Mar 20, 2017
7.8
HIGHCVSS 3.0
EPSS 1.09%
Description
GNU screen before 4.5.1 allows local users to modify arbitrary files and consequently gain root privileges by leveraging improper checking of logfile permissions.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
screen
Not affected
Red Hat Enterprise Linux 6
screen
Not affected
Red Hat Enterprise Linux 7
screen
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | screen | Not affected | n/a |
| Red Hat Enterprise Linux 6 | screen | Not affected | n/a |
| Red Hat Enterprise Linux 7 | screen | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.8 HIGH NVD
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
1 other source (Red Hat) ▾
7.0 HIGH Red Hat
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
7.2 HIGH NVD
AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.09% 0.01087
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01087
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.09% (0.01087) | 64.07th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.09% (0.01087) | 60.85th | v5 (v2026.06.15) |
| Jan 18, 2026 | 2.90% (0.02899) | 85.96th | v4 (v2025.03.14) |
| Nov 21, 2025 | 1.55% (0.01553) | 80.86th | v4 (v2025.03.14) |
| Nov 18, 2025 | 0.41% (0.00414) | 58.85th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.74% (0.01739) | 80.82th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.03% (0.04028) | 80.49th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.04% (0.00042) | 5.06th | 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) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.78% (0.00777) | 21.08th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.78% (0.00777) | 0.00th | v1 |
Weaknesses (1)
References (10)
- http://git.savannah.gnu.org/cgit/screen.git/patch/?id=1c6d2817926d30c9a7a97d99af7ac5de4a5845b8 x_refsource_CONFIRMPatchThird Party Advisory
- http://git.savannah.gnu.org/cgit/screen.git/tree/src/ChangeLog?h=v.4.5.1 x_refsource_CONFIRMRelease NotesThird Party Advisory
- http://savannah.gnu.org/bugs/?50142 x_refsource_CONFIRMThird Party Advisory
- http://www.openwall.com/lists/oss-security/2017/01/29/3 mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/95873 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-5618 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1416704 Issue Tracking
- https://lists.gnu.org/archive/html/screen-devel/2017-01/msg00025.html mailing-listx_refsource_MLISTExploitThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-5618
- https://www.cve.org/CVERecord?id=CVE-2017-5618
| Link | Providers | Tags |
|---|---|---|
| http://git.savannah.gnu.org/cgit/screen.git/patch/?id=1c6d2817926d30c9a7a97d99af7ac5de4a5845b8 | x_refsource_CONFIRMPatchThird Party Advisory | |
| http://git.savannah.gnu.org/cgit/screen.git/tree/src/ChangeLog?h=v.4.5.1 | x_refsource_CONFIRMRelease NotesThird Party Advisory | |
| http://savannah.gnu.org/bugs/?50142 | x_refsource_CONFIRMThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2017/01/29/3 | mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/95873 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2017-5618 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1416704 | Issue Tracking | |
| https://lists.gnu.org/archive/html/screen-devel/2017-01/msg00025.html | mailing-listx_refsource_MLISTExploitThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-5618 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-5618 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 20, 2017
Updated Aug 5, 2024
Reserved Jan 29, 2017
Link CVE-2017-5618
CISA Vulnrichment
Updated n/a