Incorrect Authorization Affecting screen package, versions <4.5.0-3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-DEBIAN12-SCREEN-1559335
- published20 Mar 2017
- disclosed20 Mar 2017
Introduced: 20 Mar 2017
CVE-2017-5618 (opens in a new tab)How to fix?
Upgrade Debian:12 screen to version 4.5.0-3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream screen package and not the screen package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2017-5618
- 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
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5618
- https://lists.gnu.org/archive/html/screen-devel/2017-01/msg00025.html
- http://www.openwall.com/lists/oss-security/2017/01/29/3
- http://www.securityfocus.com/bid/95873