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Debian DSA-2809-1 : ruby1.8 - several vulnerabilities
medium Nessus Plugin ID 71220
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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-2013-1821 Ben Murphy discovered that unrestricted entity expansion in REXML can lead to a Denial of Service by consuming all host memory.
- CVE-2013-4073 William (B.J.) Snow Orvis discovered a vulnerability in the hostname checking in Ruby's SSL client that could allow man-in-the-middle attackers to spoof SSL servers via a crafted certificate issued by a trusted certification authority.
- CVE-2013-4164 Charlie Somerville discovered that Ruby incorrectly handled floating point number conversion. If an application using Ruby accepted untrusted input strings and converted them to floating point numbers, an attacker able to provide such input could cause the application to crash or, possibly, execute arbitrary code with the privileges of the application.
Solution
Upgrade the ruby1.8 packages.For the oldstable distribution (squeeze), these problems have been fixed in version 1.8.7.302-2squeeze2.
For the stable distribution (wheezy), these problems have been fixed in version 1.8.7.358-7.1+deb7u1.
See Also
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=702526
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=714541
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=730189
https://security-tracker.debian.org/tracker/CVE-2013-1821
https://security-tracker.debian.org/tracker/CVE-2013-4073
https://security-tracker.debian.org/tracker/CVE-2013-4164
https://packages.debian.org/source/squeeze/ruby1.8
Plugin Details
Severity: Medium
ID: 71220
File Name: debian_DSA-2809.nasl
Version: 1.13
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 12/5/2013
Updated: 1/11/2021
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
Vulnerability Information
CPE: cpe:/o:debian:debian_linux:6.0, p-cpe:/a:debian:debian_linux:ruby1.8, cpe:/o:debian:debian_linux:7.0
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Exploit Ease: No known exploits are available
Patch Publication Date: 12/4/2013
Reference Information
CVE: CVE-2013-1821, CVE-2013-4073, CVE-2013-4164
DSA: 2809