Vigil@nce: Ruby, multiple vulnerabilites
August 2008 by Vigil@nce
SYNTHESIS
Several vulnerabilities has been discovered in Ruby.
Gravity: 3/4
Consequences: privileged access/rights, denial of service of
service
Provenance: user shell
Means of attack: 1 attack
Ability of attacker: technician (2/4)
Confidence: confirmed by the editor (5/5)
Diffusion of the vulnerable configuration: high (3/3)
Creation date: 08/08/2008
Identifier: VIGILANCE-VUL-8005
IMPACTED PRODUCTS
– Unix - plateform
DESCRIPTION
Safe Level is a variable which determines a level of paranoia in a
program. In Ruby several functions are executed with an
insufficient level of checking (Safe level too low) [grav:1/4]
The "dl" library doesn’t normalise requests received. It can be
used to execute code. [grav:3/4]
"WEBrick::HTTP::DefaultFileHandler" module uses an exponential
delay to treat requests, this is due to the utilisation of a
regular expression in "WEBrick::HTTPUtils.split_header_value"
algorithm. [grav:2/4]
The "resolv.rb" can be used by an attacker to spoof DNS answers.
[grav:2/4]
CHARACTERISTICS
Identifiers: VIGILANCE-VUL-8005