critical
9.8
CWE
119 681 787 680
Advisory Published
Updated

CVE-2018-8786: Buffer Overflow

First published: Thu Nov 29 2018(Updated: )

FreeRDP prior to version 2.0.0-rc4 contains an Integer Truncation that leads to a Heap-Based Buffer Overflow in function update_read_bitmap_update() and results in a memory corruption and probably even a remote code execution.

Credit: cve@checkpoint.com

Affected SoftwareAffected VersionHow to fix
redhat/freerdp<2.0.0
2.0.0
FreeRDP<=1.2.0
FreeRDP=2.0.0-rc1
FreeRDP=2.0.0-rc2
FreeRDP=2.0.0-rc3
Ubuntu Linux=14.04
Ubuntu Linux=16.04
Ubuntu Linux=18.04
Ubuntu Linux=18.10
Debian GNU/Linux=8.0
Fedoraproject Fedora=28
redhat enterprise Linux desktop=7.0
redhat enterprise Linux server=7.0
redhat enterprise Linux server aus=7.6
redhat enterprise Linux server eus=7.6
redhat enterprise Linux server tus=7.6
redhat enterprise Linux workstation=7.0
debian/freerdp2
2.3.0+dfsg1-2+deb11u1
2.3.0+dfsg1-2+deb11u2
2.10.0+dfsg1-1
Ubuntu=14.04
Ubuntu=16.04
Ubuntu=18.04
Ubuntu=18.10
Debian=8.0
Fedora=28

Remedy

https://github.com/FreeRDP/FreeRDP/commit/445a5a42c500ceb80f8fa7f2c11f3682538033f3

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2018-8786?

    CVE-2018-8786 has a high severity due to the potential for remote code execution and memory corruption.

  • How do I fix CVE-2018-8786?

    To fix CVE-2018-8786, update FreeRDP to version 2.0.0-rc4 or later.

  • What systems are affected by CVE-2018-8786?

    CVE-2018-8786 affects FreeRDP versions prior to 2.0.0-rc4 along with various older versions of Linux distributions that include FreeRDP.

  • What type of vulnerability is CVE-2018-8786?

    CVE-2018-8786 is classified as an integer truncation vulnerability leading to a heap-based buffer overflow.

  • Is there any known exploit for CVE-2018-8786?

    While there are no specific public exploits reported for CVE-2018-8786, its nature suggests high risk if left unpatched.

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