Vulnerability Details : CVE-2018-8786
FreeRDP prior to version 2.0.0-rc4 contains an Integer Truncation that leads to a Heap-Based Buffer Overflow in function update_read_bitmap_update() and results in a memory corruption and probably even a remote code execution.
Published
2018-11-29 18:29:01
Updated
2020-09-29 02:09:10
Vulnerability category: OverflowMemory CorruptionExecute code
Products affected by CVE-2018-8786
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
- cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
- cpe:2.3:a:freerdp:freerdp:2.0.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:freerdp:freerdp:2.0.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:freerdp:freerdp:2.0.0:rc3:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-8786
3.68%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 92 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-8786
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2018-8786
-
The product performs a calculation to determine how much memory to allocate, but an integer overflow can occur that causes less memory to be allocated than expected, leading to a buffer overflow.Assigned by: cve@checkpoint.com (Secondary)
-
When converting from one data type to another, such as long to integer, data can be omitted or translated in a way that produces unexpected values. If the resulting values are used in a sensitive context, then dangerous behaviors may occur.Assigned by: nvd@nist.gov (Primary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-8786
-
https://github.com/FreeRDP/FreeRDP/commit/445a5a42c500ceb80f8fa7f2c11f3682538033f3
Fixed CVE-2018-8786 · FreeRDP/FreeRDP@445a5a4 · GitHubPatch;Vendor Advisory
-
http://www.securityfocus.com/bid/106938
RDP Client 'FreeRDP' And 'rdesktop' Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
-
https://access.redhat.com/errata/RHSA-2019:0697
RHSA-2019:0697 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://usn.ubuntu.com/3845-2/
USN-3845-2: FreeRDP vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/
Reverse RDP Attack: Code Execution on RDP Clients - Check Point ResearchExploit;Third Party Advisory
-
https://usn.ubuntu.com/3845-1/
USN-3845-1: FreeRDP vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YVJKO2DR5EY4C4QZOP7SNNBEW2JW6FHX/
[SECURITY] Fedora 28 Update: remmina-1.3.3-1.fc28 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2019/02/msg00015.html
[SECURITY] [DLA 1666-1] freerdp security updateMailing List;Third Party Advisory
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