Bug 1641642 (CVE-2018-18541) - CVE-2018-18541 teeworlds: Missing challenge-response in the connection build up
Summary: CVE-2018-18541 teeworlds: Missing challenge-response in the connection build up
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2018-18541
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1641643 1641644
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-10-22 12:33 UTC by Andrej Nemec
Modified: 2019-09-29 15:01 UTC (History)
4 users (show)

Fixed In Version: teeworlds 0.6.5
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Clone Of:
Environment:
Last Closed: 2019-06-10 10:40:48 UTC
Embargoed:

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Description Andrej Nemec 2018-10-22 12:33:24 UTC 
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.

Upstream issue:

https://github.com/teeworlds/teeworlds/issues/1536

References:

https://teeworlds.com/?page=news&id=12544
Comment 1 Andrej Nemec 2018-10-22 12:34:49 UTC 
Created teeworlds tracking bugs for this issue:

Affects: epel-7 [bug 1641644]
Affects: fedora-all [bug 1641643]
Comment 2 Product Security DevOps Team 2019-06-10 10:40:48 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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