Debian DSA-4332-1 : ruby2.3 - security update

high Nessus Plugin ID 118721
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VPR Score: 5.9

Synopsis

The remote Debian host is missing a security-related update.

Description

Several vulnerabilities have been discovered in the interpreter for the Ruby language. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2018-16395 Tyler Eckstein reported that the equality check of OpenSSL::X509::Name could return true for non-equal objects. If a malicious X.509 certificate is passed to compare with an existing certificate, there is a possibility to be judged incorrectly that they are equal.

- CVE-2018-16396 Chris Seaton discovered that tainted flags are not propagated in Array#pack and String#unpack with some directives.

Solution

Upgrade the ruby2.3 packages.

For the stable distribution (stretch), these problems have been fixed in version 2.3.3-1+deb9u4.

See Also

https://security-tracker.debian.org/tracker/CVE-2018-16395

https://security-tracker.debian.org/tracker/CVE-2018-16396

https://security-tracker.debian.org/tracker/source-package/ruby2.3

https://packages.debian.org/source/stretch/ruby2.3

https://www.debian.org/security/2018/dsa-4332

Plugin Details

Severity: High

ID: 118721

File Name: debian_DSA-4332.nasl

Version: 1.5

Type: local

Agent: unix

Published: 11/5/2018

Updated: 4/29/2021

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:ruby2.3, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 11/3/2018

Vulnerability Publication Date: 11/16/2018

Reference Information

CVE: CVE-2018-16395, CVE-2018-16396

DSA: 4332