In Teeworlds before 0.6.5, connection packets could be forged. There was no challenge-response involved in the connection build up. A remote attacker could send connection packets from a spoofed IP address and occupy all server slots, or even use them for a reflection attack using map download packets.

This update for teeworlds fixes the following issues :

  - CVE-2019-10879: An integer overflow in     CDataFileReader::Open() could have lead to a buffer     overflow and possibly remote code execution, because     size-related multiplications were mishandled.
    (boo#1131729)

  - CVE-2019-10878: A failed bounds check in     CDataFileReader::GetData() and     CDataFileReader::ReplaceData() and related functions     could have lead to an arbitrary free and out-of-bounds     pointer write, possibly resulting in remote code     execution.

  - CVE-2019-10877: An integer overflow in CMap::Load()     could have lead to a buffer overflow, because     multiplication of width and height were mishandled.

  - CVE-2018-18541: Connection packets could have been     forged. There was no challenge-response involved in the     connection build up. A remote attacker could have sent     connection packets from a spoofed IP address and occupy     all server slots, or even use them for a reflection     attack using map download packets. (boo#1112910)

  - Update to version 0.7.3.1

  - Colorful gametype and level icons in the browser instead     of grayscale.

  - Add an option to use raw mouse inputs, revert to (0.6)     relative mode by default.

  - Demo list marker indicator.

  - Restore ingame Player and Tee menus, add a warning that     a reconnect is needed.

  - Emotes can now be cancelled by releasing the mouse in     the middle of the circle.

  - Improve add friend text.

  - Add a confirmation for removing a filter

  - Add a 'click a player to follow' hint

  - Also hint players which key they should press to set     themselves ready.

  - fixed using correct array measurements when placing egg     doodads

  - fixed demo recorder downloaded maps using the sha256     hash

  - show correct game release version in the start menu and     console

  - Fix platform-specific client libraries for Linux

  - advanced scoreboard with game statistics

  - joystick support (experimental!)

  - copy paste (one-way)

  - bot cosmetics (a visual difference between players and     NPCs)

  - chat commands (type / in chat)

  - players can change skin without leaving the server     (again)

  - live automapper and complete rules for 0.7 tilesets

  - audio toggling HUD

  - an Easter surprise...

  - new gametypes: 'last man standing' (LMS) and 'last team     standing' (LTS). survive by your own or as a team with     limited weaponry

  - 64 players support. official gametypes are still     restricted to 16 players maximum but allow more     spectators

  - new skin system. build your own skins based on a variety     of provided parts

  - enhanced security. all communications require a     handshake and use a token to counter spoofing and     reflection attacks

  - new maps: ctf8, dm3, lms1. Click to discover them!

  - animated background menu map: jungle, heavens (day/night     themes, customisable in the map editor)

  - new design for the menus: added start menus, reworked     server browser, settings

  - customisable gametype icons (browser). make your own!

  - chat overhaul, whispers (private messages)

  - composed binds (ctrl+, shift+, alt+)

  - scoreboard remodelled, now shows kills/deaths

  - demo markers

  - master server list cache (in case the masters are     unreachable)

  - input separated from rendering (optimisation)

  - upgrade to SDL2. support for multiple monitors,     non-english keyboards, and more

  - broadcasts overhaul, optional colours support

  - ready system, for competitive settings

  - server difficulty setting (casual, competitive, normal),     shown in the browser

  - spectator mode improvements: follow flags, click on     players

  - bot flags for modified servers: indicate NPCs, can be     filtered out in the server browser

  - sharper graphics all around (no more tileset_borderfix     and dilate)

  - refreshed the HUD, ninja cooldown, new mouse cursor

  - mapres update (higher resolution, fixes...)

0.6.5

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.

It was discovered that incorrect connection setup in the server for Teeworlds, an online multi-player platform 2D shooter, could result in denial of service via forged connection packets (rendering all game server slots occupied).

ID	Name	Product	Family	Severity
126977	openSUSE Security Update : teeworlds (openSUSE-2019-1793)	Nessus	SuSE Local Security Checks	critical
120475	Fedora 28 : teeworlds (2018-63465e1846)	Nessus	Fedora Local Security Checks	high
120438	Fedora 29 : teeworlds (2018-5702dc9bdf)	Nessus	Fedora Local Security Checks	high
118580	Fedora 27 : teeworlds (2018-b24201fc50)	Nessus	Fedora Local Security Checks	high
118495	Debian DSA-4329-1 : teeworlds - security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2018-18541

high

Tenable Plugins

critical

high

high

high

high