VulnerabilityModified
CVE-2017-5618
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.
HIGH 7.8EPSS 1.09%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.09%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.09% probability · 63th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-863
- Affected
- gnu/screen
- Source
- cve@mitre.org
References
- http://git.savannah.gnu.org/cgit/screen.git/patch/?id=1c6d2817926d30c9a7a97d99af7ac5de4a5845b8Patch, Third Party Advisory
- http://git.savannah.gnu.org/cgit/screen.git/tree/src/ChangeLog?h=v.4.5.1Release Notes, Third Party Advisory
- http://savannah.gnu.org/bugs/?50142Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/01/29/3Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/95873Third Party Advisory, VDB Entry
- https://lists.gnu.org/archive/html/screen-devel/2017-01/msg00025.htmlExploit, Third Party Advisory
- http://git.savannah.gnu.org/cgit/screen.git/patch/?id=1c6d2817926d30c9a7a97d99af7ac5de4a5845b8Patch, Third Party Advisory
- http://git.savannah.gnu.org/cgit/screen.git/tree/src/ChangeLog?h=v.4.5.1Release Notes, Third Party Advisory
- http://savannah.gnu.org/bugs/?50142Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/01/29/3Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/95873Third Party Advisory, VDB Entry
- https://lists.gnu.org/archive/html/screen-devel/2017-01/msg00025.htmlExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.