CVE-2017-5618

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-03-20 · updated 2026-06-17
Weakness: CWE-863

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

GNU Screen: through 4.5.0

References

http://git.savannah.gnu.org/cgit/screen.git/patch/?id=1c6d2817926d30c9a7a97d99af7ac5de4a5845b8
http://git.savannah.gnu.org/cgit/screen.git/tree/src/ChangeLog?h=v.4.5.1
http://savannah.gnu.org/bugs/?50142
http://www.openwall.com/lists/oss-security/2017/01/29/3
http://www.securityfocus.com/bid/95873
https://lists.gnu.org/archive/html/screen-devel/2017-01/msg00025.html
http://git.savannah.gnu.org/cgit/screen.git/patch/?id=1c6d2817926d30c9a7a97d99af7ac5de4a5845b8
http://git.savannah.gnu.org/cgit/screen.git/tree/src/ChangeLog?h=v.4.5.1
http://savannah.gnu.org/bugs/?50142
http://www.openwall.com/lists/oss-security/2017/01/29/3
http://www.securityfocus.com/bid/95873
https://lists.gnu.org/archive/html/screen-devel/2017-01/msg00025.html

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