Detections
Analytics
RHEL 4 / 5 : ruby (RHSA-2008:0897)
high Nessus Plugin ID 34466
Synopsis
The remote Red Hat host is missing one or more security updates.Description
Updated ruby packages that fix several security issues are now available for Red Hat Enterprise Linux 4 and 5.This update has been rated as having moderate security impact by the Red Hat Security Response Team.
Ruby is an interpreted scripting language for quick and easy object-oriented programming.
The Ruby DNS resolver library, resolv.rb, used predictable transaction IDs and a fixed source port when sending DNS requests. A remote attacker could use this flaw to spoof a malicious reply to a DNS query. (CVE-2008-3905)
Ruby's XML document parsing module (REXML) was prone to a denial of service attack via XML documents with large XML entity definitions recursion. A specially crafted XML file could cause a Ruby application using the REXML module to use an excessive amount of CPU and memory.
(CVE-2008-3790)
An insufficient 'taintness' check flaw was discovered in Ruby's DL module, which provides direct access to the C language functions. An attacker could use this flaw to bypass intended safe-level restrictions by calling external C functions with the arguments from an untrusted tainted inputs. (CVE-2008-3657)
A denial of service flaw was discovered in WEBrick, Ruby's HTTP server toolkit. A remote attacker could send a specially crafted HTTP request to a WEBrick server that would cause the server to use an excessive amount of CPU time. (CVE-2008-3656)
A number of flaws were found in the safe-level restrictions in Ruby.
It was possible for an attacker to create a carefully crafted malicious script that can allow the bypass of certain safe-level restrictions. (CVE-2008-3655)
A denial of service flaw was found in Ruby's regular expression engine. If a Ruby script tried to process a large amount of data via a regular expression, it could cause Ruby to enter an infinite-loop and crash. (CVE-2008-3443)
Users of ruby should upgrade to these updated packages, which contain backported patches to resolve these issues.
Solution
Update the affected packages.See Also
https://access.redhat.com/security/cve/cve-2008-1145
https://access.redhat.com/security/cve/cve-2008-3443
https://access.redhat.com/security/cve/cve-2008-3655
https://access.redhat.com/security/cve/cve-2008-3656
https://access.redhat.com/security/cve/cve-2008-3657
https://access.redhat.com/security/cve/cve-2008-3790
Plugin Details
Severity: High
ID: 34466
File Name: redhat-RHSA-2008-0897.nasl
Version: 1.29
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 10/22/2008
Updated: 1/14/2021
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.6
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.1
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:irb, p-cpe:/a:redhat:enterprise_linux:ruby, p-cpe:/a:redhat:enterprise_linux:ruby-devel, p-cpe:/a:redhat:enterprise_linux:ruby-docs, p-cpe:/a:redhat:enterprise_linux:ruby-irb, p-cpe:/a:redhat:enterprise_linux:ruby-libs, p-cpe:/a:redhat:enterprise_linux:ruby-mode, p-cpe:/a:redhat:enterprise_linux:ruby-rdoc, p-cpe:/a:redhat:enterprise_linux:ruby-ri, p-cpe:/a:redhat:enterprise_linux:ruby-tcltk, cpe:/o:redhat:enterprise_linux:4, cpe:/o:redhat:enterprise_linux:4.7, cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:5.2
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 10/21/2008
Vulnerability Publication Date: 3/4/2008
Reference Information
CVE: CVE-2008-1145, CVE-2008-3443, CVE-2008-3655, CVE-2008-3656, CVE-2008-3657, CVE-2008-3790, CVE-2008-3905, CVE-2008-4310