Out-of-bounds read in FreeRDP - CVE-2020-13396

Vulnerability identifier: #VU28200

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-13396

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within ntlm_read_ChallengeMessage in winpr/libwinpr/sspi/NTLM/ntlm_message.c. A remote attacker can trigger out-of-bounds read error via a specially crafted authentication message and read contents of memory on the system.

FreeRDP
Arch Linux
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Anolis OS
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Opensuse
Ubuntu
freerdp (Alpine package)
freerdp (Red Hat package)
vinagre (Red Hat package)
libfreerdp-client1.1 (Ubuntu package)
libfreerdp-common1.1.0 (Ubuntu package)
libfreerdp-core1.1 (Ubuntu package)
freerdp
freerdp-libs
libwinpr
libwinpr-devel

Install update from vendor's website.

FreeRDP - update to 2.1.1
freerdp (Alpine package) - update to 2.0.0-r1
freerdp (Red Hat package) - addressed in versions 2.1.1-1.el8, 2.1.1-2.el7
vinagre (Red Hat package) - update to 3.22.0-23.el8
libfreerdp-client1.1 (Ubuntu package) - update to 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2
libfreerdp-common1.1.0 (Ubuntu package) - update to 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2
libfreerdp-core1.1 (Ubuntu package) - update to 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2
freerdp - update to 2.2.0-6
freerdp-libs - update to 2.2.0-6
libwinpr - update to 2.2.0-6
libwinpr-devel - update to 2.2.0-6

• https://github.com/FreeRDP/FreeRDP/commit/48361c411e50826cb602c7aab773a8a20e1da6bc
• https://github.com/FreeRDP/FreeRDP/commit/8fb6336a4072abcee8ce5bd6ae91104628c7bb69
• https://github.com/FreeRDP/FreeRDP/compare/2.1.0...2.1.1

• Multiple vulnerabilities in FreeRDP
• Arch Linux update for freerdp
• OpenSUSE Linux update for freerdp
• Out-of-bounds read in freerdp (Alpine package)
• Red Hat Enterprise Linux 7 update for freerdp
• Red Hat Enterprise Linux 8 update for freerdp and vinagre
• Anolis OS update for freerdp (Anolis OS 8.4)
• Ubuntu update for freerdp