Huawei EulerOS: Security Advisory for freerdp (EulerOS-SA-2021-1188)

Published: 2021-02-05 15:01:59
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:P

Summary:
The remote host is missing an update for the Huawei EulerOS 'freerdp' Linux Distribution Package(s) announced via the EulerOS-SA-2021-1188 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
In FreeRDP after 1.0 and before 2.0.0, there is an out-of-bound read in update_read_bitmap_data that allows client memory to be read to an image buffer. The result is displayed on screen as colour.(CVE-2020-11045) libfreerdp/gdi/region.c in FreeRDP versions 1.0 through 2.0.0-rc4 has an Integer Overflow.(CVE-2020-11523) In FreeRDP before version 2.1.2, there is a global OOB read in update_read_cache_bitmap_v3_order. As a workaround, one can disable bitmap cache with -bitmap-cache (default). This is fixed in version 2.1.2.(CVE-2020-11096) An exploitable code execution vulnerability exists in the authentication functionality of FreeRDP 2.0.0-beta1+android11. A specially crafted server response can cause an out-of-bounds write resulting in an exploitable condition. An attacker can compromise the server or use a man in the middle attack to trigger this vulnerability.(CVE-2017-2834) An exploitable code execution vulnerability exists in the RDP receive functionality of FreeRDP 2.0.0-beta1+android11. A specially crafted server response can cause an out-of-bounds write resulting in an exploitable condition. An attacker can compromise the server or use a man in the middle to trigger this vulnerability.(CVE-2017-2835) An exploitable denial of service vulnerability exists within the reading of proprietary server certificates in FreeRDP 2.0.0-beta1+android11. A specially crafted challenge packet can cause the program termination leading to a denial of service condition. An attacker can compromise the server or use man in the middle to trigger this vulnerability.(CVE-2017-2836) An exploitable denial of service vulnerability exists within the handling of security data in FreeRDP 2.0.0-beta1+android11. A specially crafted challenge packet can cause the program termination leading to a denial of service condition. An attacker can compromise the server or use man in the middle to trigger this vulnerability.(CVE-2017-2837) An exploitable denial of service vulnerability exists within the handling of challenge packets in FreeRDP 2.0.0-beta1+android11. A specially crafted challenge packet can cause the program termination leading to a denial of service condition. An attacker can compromise the server or use man in the middle to trigger this vulnerability.(CVE-2017-2838) An exploitable denial of service vulnerability exists within the handling of challenge packets in FreeRDP 2.0.0-beta1+android11. A specially crafted challenge packet can cause the program termination leading to a denial of service condition. An attacker can compromise the server or use man in the middle to trigger this vulnerability.(CVE-2017-2839)

Affected Versions:
'freerdp' Linux Distribution Package(s) on Huawei EulerOS V2.0SP5.

Recommendations:
Please install the updated Linux Distribution Package(s).

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2017-2834
https://nvd.nist.gov/vuln/detail/CVE-2017-2835
https://nvd.nist.gov/vuln/detail/CVE-2017-2836
https://nvd.nist.gov/vuln/detail/CVE-2017-2837
https://nvd.nist.gov/vuln/detail/CVE-2017-2838
https://nvd.nist.gov/vuln/detail/CVE-2017-2839
https://nvd.nist.gov/vuln/detail/CVE-2020-11045
https://nvd.nist.gov/vuln/detail/CVE-2020-11096
https://nvd.nist.gov/vuln/detail/CVE-2020-11523

References:


https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2021-1188

Severity
Medium
CVSS Score
6.8
Published
2021-02-05
Modified
2021-02-05
Category
Huawei EulerOS Local Security Checks

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