openEuler 20.03 LTS update for ruby-2.5.1-105

1) Information disclosure

EUVDB-ID: #VU31886

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10933

CWE-ID: CWE-200 - Information exposure

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 updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

ruby-irb: before 2.5.1-105

ruby-help: before 2.5.1-105

rubygem-xmlrpc: before 0.3.0-105

rubygem-test-unit: before 3.2.7-105

rubygems-devel: before 2.7.6-105

rubygems: before 2.7.6-105

rubygem-rdoc: before 6.0.1-105

rubygem-rake: before 12.3.0-105

rubygem-power_assert: before 1.1.1-105

rubygem-net-telnet: before 0.1.1-105

rubygem-minitest: before 5.10.3-105

rubygem-did_you_mean: before 1.2.0-105

rubygem-psych: before 3.0.2-105

rubygem-openssl: before 2.1.0-105

rubygem-json: before 2.1.0-105

rubygem-io-console: before 0.4.6-105

rubygem-bigdecimal: before 1.3.4-105

ruby-debugsource: before 2.5.1-105

ruby-debuginfo: before 2.5.1-105

ruby-devel: before 2.5.1-105

ruby: before 2.5.1-105

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2020-1021

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.