Multiple vulnerabilities in FreeRDP
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2020-13396 CVE-2020-13397 CVE-2020-13398 |
| CWE-ID | CWE-125 CWE-787 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
FreeRDP Universal components / Libraries / Libraries used by multiple products |
| Vendor | FreeRDP |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Out-of-bounds read
EUVDB-ID: #VU28200
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-13396
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsFreeRDP: 2.1.0
External linkshttp://github.com/FreeRDP/FreeRDP/commit/48361c411e50826cb602c7aab773a8a20e1da6bc
http://github.com/FreeRDP/FreeRDP/commit/8fb6336a4072abcee8ce5bd6ae91104628c7bb69
http://github.com/FreeRDP/FreeRDP/compare/2.1.0...2.1.1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Out-of-bounds read
EUVDB-ID: #VU28201
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-13397
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within security_fips_decrypt in libfreerdp/core/security.c due to an uninitialized value. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability..
Vulnerable software versionsFreeRDP: 2.1.0
External linkshttp://github.com/FreeRDP/FreeRDP/commit/8fb6336a4072abcee8ce5bd6ae91104628c7bb69
http://github.com/FreeRDP/FreeRDP/commit/d6cd14059b257318f176c0ba3ee0a348826a9ef8
http://github.com/FreeRDP/FreeRDP/compare/2.1.0...2.1.1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Out-of-bounds write
EUVDB-ID: #VU28202
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-13398
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input within the crypto_rsa_common() function in libfreerdp/crypto/crypto.c. A remote attacker can send specially crafted data to the application, trigger out-of-bounds write and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsFreeRDP: 2.1.0
External linkshttp://github.com/FreeRDP/FreeRDP/commit/8305349a943c68b1bc8c158f431dc607655aadea
http://github.com/FreeRDP/FreeRDP/commit/8fb6336a4072abcee8ce5bd6ae91104628c7bb69
http://github.com/FreeRDP/FreeRDP/compare/2.1.0...2.1.1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
