Information disclosure in ruby (Alpine package)

Published: 2020-04-01

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2020-10933
CWE-ID	CWE-200
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	ruby (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) Information disclosure

EUVDB-ID: #VU31886

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-10933

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to BasicSocket#read_nonblock method outputs previous value of the heap instead of copying the requested data. A remote attacker can gain access to sensitive information on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ruby (Alpine package): 2.5.0-r0 - 2.6.5-r2

ruby (Alpine package):

CPE2.3

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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