PT-2020-6921 · Freerdp+6 · Freerdp+6

Bmiklautz · Published 2020-03-31 · Updated 2023-10-24 · CVE-2020-11044

Positive Technologies (AI Summary)

CVSS v2.0

3.5

Low

Base vector

AV:N/AC:M/Au:S/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions FreeRDP versions 1.2 through 1.2 (simplified to) FreeRDP versions greater than 1.2 and before 2.0.0

Description The issue is related to a double free error in the update read cache bitmap v3 order function of the FreeRDP RDP client. This error can be exploited by a remote attacker to cause a denial of service. The exploitation occurs when the client parses corrupted data from a manipulated server.

Recommendations For FreeRDP versions greater than 1.2 and before 2.0.0, update to version 2.0.0 to resolve the issue. As a temporary workaround, consider restricting access to the update read cache bitmap v3 order function until a patch is available.

Exploit

Fix

Double Free

Weakness Enumeration

CWE-415

CWE-672

Related Identifiers

ALSA-2020:4647

BDU:2023-07127

CESA-2020_4031

CESA-2020_4647

CVE-2020-11044

DLA-3606-1

GHSA-CGQH-P732-6X2W

MGASA-2020-0297

OESA-2021-1008

RHSA-2020:4031

RHSA-2020:4647

RHSA-2020_4031

RHSA-2020_4647

RLSA-2020:4647

USN-4379-1

Affected Products

Almalinux

Centos

Freerdp

Linuxmint

Red Hat

Rocky Linux

Ubuntu

References · 150

• 🔥 https://github.com/FreeRDP/FreeRDP/issues/6013 · Exploit
• https://github.com/FreeRDP/FreeRDP/commit/67c2aa52b2ae0341d469071d1bc8aab91f8d2ed8 · Patch
• https://ubuntu.com/security/CVE-2018-1000852 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-11522 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-11044 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-11042 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-11523 · Security Note
• https://linux.oracle.com/errata/ELSA-2020-4647.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-11047 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2020-0297.html · Security Note
• https://ubuntu.com/security/CVE-2020-11042 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-11044 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-07127 · Security Note
• https://ubuntu.com/security/CVE-2020-11524 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-13397 · Vendor Advisory