Improper Privilege Management in screen (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-5618
CWE-ID CWE-269
Exploitation vector Local
Public exploit N/A
Vulnerable software
 screen (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper Privilege Management

EUVDB-ID: #VU33554

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-5618

CWE-ID: CWE-269 - Improper Privilege Management

Exploit availability: No

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

screen (Alpine package): 4.4.0-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=62ff75ac828e5f41d65a7b1b4785771a46f6107d


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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