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.
02 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.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.08% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 64.9% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2017-03-20 16:00Z9 YR AGO
- Last updated
- 2024-08-05 15:04Z2 YR AGO
- Reserved
- 2017-01-29
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-863Incorrect AuthorizationClass
- Data version
- 5.1
- Document digest
- e45e4c495ee6818df8e5f54fe70e8de895882a4e09bce82cee11c611f5afccbf
05 Affected products
06 References
- git.savannah.gnu.orghttp://git.savannah.gnu.org/cgit/screen.git/tree/src/ChangeLog?h=v.4.5.1
- savannah.gnu.orghttp://savannah.gnu.org/bugs/?50142
- www.openwall.com[oss-security] 20170129 Re: CVE request: GNU screen escalationhttp://www.openwall.com/lists/oss-security/2017/01/29/3
- git.savannah.gnu.orghttp://git.savannah.gnu.org/cgit/screen.git/patch/?id=1c6d2817926d30c9a7a97d99af7ac5de4a5845b8
- www.securityfocus.com95873http://www.securityfocus.com/bid/95873
- lists.gnu.org[screen-devel] 20170124 [bug #50142] root exploit 4.5.0https://lists.gnu.org/archive/html/screen-devel/2017-01/msg00025.html
07 Fixed in
Debian 12
- screen Fixed in 4.5.0-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- screen Fixed in 4.5.0-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- screen Fixed in 4.5.0-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.