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ubuntucveUbuntu.comUB:CVE-2023-40181
HistoryAug 31, 2023 - 12:00 a.m.

CVE-2023-40181

2023-08-3100:00:00
ubuntu.com
ubuntu.com
8
freerdp
integer-underflow
out-of-bound
read
copymemory
zgfx_decompress_segment
crash
upgrade
security
vulnerability

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS

0.001

Percentile

38.3%

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP),
released under the Apache license. Affected versions are subject to an
Integer-Underflow leading to Out-Of-Bound Read in the
zgfx_decompress_segment function. In the context of CopyMemory, it’s
possible to read data beyond the transmitted packet range and likely cause
a crash. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3.
Users are advised to upgrade. There are no known workarounds for this
issue.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchfreerdp2< 2.2.0+dfsg1-0ubuntu0.18.04.4+esm1UNKNOWN
ubuntu20.04noarchfreerdp2< 2.2.0+dfsg1-0ubuntu0.20.04.5UNKNOWN
ubuntu22.04noarchfreerdp2< 2.6.1+dfsg1-3ubuntu2.4UNKNOWN
ubuntu23.04noarchfreerdp2< 2.10.0+dfsg1-1ubuntu0.2UNKNOWN
ubuntu23.10noarchfreerdp2< 2.10.0+dfsg1-1.1ubuntu1UNKNOWN

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS

0.001

Percentile

38.3%