Bug 1475234 - (CVE-2017-2839) CVE-2017-2839 freerdp: Rdp Client License Read Challenge Packet Denial of Service
CVE-2017-2839 freerdp: Rdp Client License Read Challenge Packet Denial of Ser...
Status: CLOSED WONTFIX
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20170724,reported=2...
: Security
Depends On: 1475245 1475247 1475246
Blocks: 1475243
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Reported: 2017-07-26 05:11 EDT by Adam Mariš
Modified: 2017-08-07 09:59 EDT (History)
5 users (show)

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Last Closed: 2017-08-07 09:59:04 EDT
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Description Adam Mariš 2017-07-26 05:11:50 EDT
An exploitable denial of service vulnerability exists within the handling of challenge packets in FreeRDP 2.0.0-beta1+android11. A specially crafted challenge packet can cause the program termination leading to a denial of service condition. An attacker can compromise the server or use man in the middle to trigger this vulnerability.

This vulnerability is located in the handling of security data function. The function reads a length value from the server packet. A malicious actor can send a specially crafted packet with a modified length value causing the client to crash and causing a denial of service condition.

External References:

https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0341
http://blog.talosintelligence.com/2017/07/vulnerbility-spotlight-freerdp-multiple.html
Comment 1 Adam Mariš 2017-07-26 05:30:50 EDT
Created freerdp tracking bugs for this issue:

Affects: epel-6 [bug 1475247]
Affects: fedora-all [bug 1475246]


Created freerdp1.2 tracking bugs for this issue:

Affects: fedora-all [bug 1475245]
Comment 3 Stefan Cornelius 2017-08-07 09:59:11 EDT
Statement:

Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

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