[SECURITY] [DSA 3966-1] ruby2.3 security update

------------------------------------------------------------------------- Debian Security Advisory DSA-3966-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff September 05, 2017 https://www.debian.org/security/faq -...

RubyGems < 2.6.13 - Arbitrary File Overwrite Exploit

Exploit for linux platform in category local exploits There is no check for name field in metadata.gz. By assigning a maliciously crafted string like ../../../../../any/where to the field, an attacker can create an arbitrary file out of the directory of the gem, or even replace an existing file...

RubyGems < 2.6.13 - Arbitrary File Overwrite

There is no check for name field in metadata.gz. By assigning a maliciously crafted string like ../../../../../any/where to the field, an attacker can create an arbitrary file out of the directory of the gem, or even replace an existing file with a malicious file. Proof of Concept 1: Create a fil...

CVE-2017-0902

A vulnerability was found where rubygems did not sanitize DNS responses when requesting the hostname of the rubygems server for a domain, via a rubygems.tcp DNS SRV query. An attacker with the ability to manipulate DNS responses could direct the gem command towards a different domain...

CVE-2017-0900

It was found that rubygems could use an excessive amount of CPU while parsing a sufficiently long gem summary. A specially crafted gem from a gem repository could freeze gem commands attempting to parse its summary...

Design/Logic Flaw

RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem specifications that include terminal escape characters. Printing the gem specification would execute terminal escape sequences...

Spoofing

RubyGems version 2.6.12 and earlier is vulnerable to a DNS hijacking vulnerability that allows a MITM attacker to force the RubyGems client to download and install gems from a server that the attacker controls...

CVE-2017-0899

RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem specifications that include terminal escape characters. Printing the gem specification would execute terminal escape sequences...

CVE-2017-0900

RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem specifications to cause a denial of service attack against RubyGems clients who have issued a query command...

Design/Logic Flaw

RubyGems version 2.6.12 and earlier fails to validate specification names, allowing a maliciously crafted gem to potentially overwrite any file on the filesystem...

CVE-2017-0900

RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem specifications to cause a denial of service attack against RubyGems clients who have issued a query command...

CVE-2017-0899

RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem specifications that include terminal escape characters. Printing the gem specification would execute terminal escape sequences...

CVE-2017-0901

RubyGems version 2.6.12 and earlier fails to validate specification names, allowing a maliciously crafted gem to potentially overwrite any file on the filesystem...

CVE-2017-0901

RubyGems version 2.6.12 and earlier fails to validate specification names, allowing a maliciously crafted gem to potentially overwrite any file on the filesystem...

DEBIAN-CVE-2017-0901

RubyGems version 2.6.12 and earlier fails to validate specification names, allowing a maliciously crafted gem to potentially overwrite any file on the filesystem...

ALPINE-CVE-2017-0899

RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem specifications that include terminal escape characters. Printing the gem specification would execute terminal escape sequences...

CVE-2017-0902

RubyGems version 2.6.12 and earlier is vulnerable to a DNS hijacking vulnerability that allows a MITM attacker to force the RubyGems client to download and install gems from a server that the attacker controls...

Command injection

RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem specifications to cause a denial of service attack against RubyGems clients who have issued a query command...

CVE-2017-0902

RubyGems version 2.6.12 and earlier is vulnerable to a DNS hijacking vulnerability that allows a MITM attacker to force the RubyGems client to download and install gems from a server that the attacker controls...

DEBIAN-CVE-2017-0899

RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem specifications that include terminal escape characters. Printing the gem specification would execute terminal escape sequences...