CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:P/I:P/A:P
AI Score
Confidence
Low
EPSS
Percentile
94.4%
Debian Security Advisory DSA-2783-2 [email protected]
http://www.debian.org/security/ Salvatore Bonaccorso
October 24, 2013 http://www.debian.org/security/faq
Package : librack-ruby
Vulnerability : several
Problem type : remote
Debian-specific: no
CVE ID : CVE-2011-5036 CVE-2013-0183 CVE-2013-0184 CVE-2013-0263
Debian Bug : 653963 698440 700226
The update of librack-ruby in DSA-2783-1 also addressed CVE-2013-0183.
The patch applied breaks rails applications like redmine (see Debian Bug
#727187). Updated packages are available to address this problem.
For reference, the original advisory text follows:
Several vulnerabilities were discovered in Rack, a modular Ruby
webserver interface. The Common Vulnerabilites and Exposures project
identifies the following vulnerabilities:
CVE-2011-5036
Rack computes hash values for form parameters without restricting
the ability to trigger hash collisions predictably, which allows
remote attackers to cause a denial of service (CPU consumption)
by sending many crafted parameters.
CVE-2013-0184
Vulnerability in Rack::Auth::AbstractRequest allows remote
attackers to cause a denial of service via unknown vectors.
CVE-2013-0263
Rack::Session::Cookie allows remote attackers to guess the
session cookie, gain privileges, and execute arbitrary code via a
timing attack involving am HMAC comparison function that does not
run in constant time.
For the oldstable distribution (squeeze), these problems have been fixed in
version 1.1.0-4+squeeze1.
The stable, testing and unstable distributions do not contain the
librack-ruby package. They have already been addressed in version
1.4.1-2.1 of the ruby-rack package.
We recommend that you upgrade your librack-ruby packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/
Mailing list: [email protected]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 6 | all | librack-ruby | < 1.1.0-4+squeeze1 | librack-ruby_1.1.0-4+squeeze1_all.deb |
Debian | 6 | all | librack-ruby1.8 | < 1.1.0-4+squeeze1 | librack-ruby1.8_1.1.0-4+squeeze1_all.deb |
Debian | 6 | all | librack-ruby1.9.1 | < 1.1.0-4+squeeze1 | librack-ruby1.9.1_1.1.0-4+squeeze1_all.deb |