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4.6

CVE-2022-39320: Heap buffer overflow in urbdrc channel

CVE-2022-39320 · published 3 years ago
Summary

FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP may attempt integer addition on too narrow types leads to allocation of a buffer too small holding the data written. A malicious server can trick a FreeRDP based client to read out of bound data and send it b...

What to do
  • Update debian freerdp2 to version 2.9.0+dfsg1-1.
  • Update freerdp freerdp to version 2.9.0 or later.
Affected software
Ecosystem VendorProductAffected versions
– freerdp freerdp < 2.9.0
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
– fedoraproject fedora 36
37
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
Debian:12 debian freerdp2 < 2.9.0+dfsg1-1
Fix: upgrade to 2.9.0+dfsg1-1
Original advisory text
Heap buffer overflow in urbdrc channel
FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP may attempt integer addition on too narrow types leads to allocation of a buffer too small holding the data written. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server. This issue has been addressed in version 2.9.0 and all users are advised to upgrade. Users unable to upgrade should not use the `/usb` redirection switch.
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
4.6 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-125Out-of-bounds Read
Timeline
Published16 Nov 2022
Updated4 Nov 2026
First seen29 Sep 2026
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