Vulnerabilities > CVE-2020-11722 - Unrestricted Upload of File with Dangerous Type vulnerability in Dungeon Crawl Stone Soup Project Dungeon Crawl Stone Soup

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
dungeon-crawl-stone-soup-project
CWE-434
critical
nessus

Summary

Dungeon Crawl Stone Soup (aka DCSS or crawl) before 0.25 allows remote attackers to execute arbitrary code via Lua bytecode embedded in an uploaded .crawlrc file.

Vulnerable Configurations

Part Description Count
Application
Dungeon_Crawl_Stone_Soup_Project
157

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Accessing Functionality Not Properly Constrained by ACLs
    In applications, particularly web applications, access to functionality is mitigated by the authorization framework, whose job it is to map ACLs to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application or can run queries for data that he is otherwise not supposed to.
  • Privilege Abuse
    An adversary is able to exploit features of the target that should be reserved for privileged users or administrators but are exposed to use by lower or non-privileged accounts. Access to sensitive information and functionality must be controlled to ensure that only authorized users are able to access these resources. If access control mechanisms are absent or misconfigured, a user may be able to access resources that are intended only for higher level users. An adversary may be able to exploit this to utilize a less trusted account to gain information and perform activities reserved for more trusted accounts. This attack differs from privilege escalation and other privilege stealing attacks in that the adversary never actually escalates their privileges but instead is able to use a lesser degree of privilege to access resources that should be (but are not) reserved for higher privilege accounts. Likewise, the adversary does not exploit trust or subvert systems - all control functionality is working as configured but the configuration does not adequately protect sensitive resources at an appropriate level.

Nessus

  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2020-DE88782EAA.NASL
    description - Release 0.24.1 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-05-15
    modified2020-05-11
    plugin id136440
    published2020-05-11
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/136440
    titleFedora 31 : crawl (2020-de88782eaa)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2020-549.NASL
    descriptionThis update for crawl fixes the following issues : - CVE-2020-11722: Fixed a remote code evaluation issue with lua loadstring (boo#1169381) Update to version 0.24.0 - Vampire species simplified - Thrown weapons streamlined - Fedhas reimagined - Sif Muna reworked Update to version 0.23.2 - Trap system overhaul - New Gauntlet portal to replace Labyrinths - Nemelex Xobeh rework - Nine unrandarts reworked and the new
    last seen2020-05-03
    modified2020-04-27
    plugin id136009
    published2020-04-27
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/136009
    titleopenSUSE Security Update : crawl (openSUSE-2020-549)