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TI-2017-03620 Aliases CVE-2017-5618GHSA-qj7p-fvh6-8gg6

GNU screen before 4.5.1 allows local users to modify arbitrary files and consequently…

Priority LOW 36CWE-863Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-863.

Summary

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.

Why it matters now

EPSS 0.01087 65th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gnu:screen:*:*:*:*:*:*:*:*up to 4.5.0VulnerableGNU
  • cpe:2.3:a:gnu:screen:*:*:*:*:*:*:*:* Versions up to 4.5.0 Vulnerable ·GNU

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-5618
  2. 2026-10-03 Alias added: GHSA-qj7p-fvh6-8gg6

References

Exploit 2

Patch 1

Advisory 2

  • TI-2023-10233 socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on… CVSS 3.1MEDIUM 6.5
  • TI-2021-08542 encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of… CVSS 3.1CRITICAL 9.8
  • TI-2003-00878 Integer signedness error in ansi.c for GNU screen 4.0.1 and earlier, and 3.9.15 and… CVSS 2.0HIGH 10.0
  • TI-2020-07488 A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape… CVSS 3.1CRITICAL 9.8
  • TI-2007-02947 GNU screen 4.0.3 allows local users to unlock the screen via a CTRL-C sequence at the… CVSS 2.0HIGH 7.2
  • TI-2002-01524 Buffer overflow in the Braille module for GNU screen 3.9.11, when HAVE_BRAILLE is… CVSS 2.0MEDIUM 4.6
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences