HIGH
freerdp: Several out-of-bounds reads in NTLM authentication module resulting in a denial of service
Published Nov 29, 2018
7.5
HIGHCVSS 3.0
EPSS 5.24%
Description
FreeRDP prior to version 2.0.0-rc4 contains several Out-Of-Bounds Reads in the NTLM Authentication module that results in a Denial of Service (segfault).
Affected products
-
- Version All versions prior to 2.0.0-rc4StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Check Point Software Technologies Ltd. | FreeRDP | n/a |
|
Configuration 1
Configuration 2
OR
- 14.04
- 16.04
- 18.04
- 18.10
Configuration 3
- 8.0
No data.
Red Hat Enterprise Linux 6
freerdp
Not affected
Red Hat Enterprise Linux 7
freerdp
Not affected
Red Hat Enterprise Linux 8
freerdp
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | freerdp | Not affected | n/a |
| Red Hat Enterprise Linux 7 | freerdp | Not affected | n/a |
| Red Hat Enterprise Linux 8 | freerdp | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of freerdp as shipped with Red Hat Enterprise Linux 6 and 7 as they did not include the vulnerable code.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
1 other source (Red Hat) ▾
6.5 MEDIUM Red Hat
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
5.24% 0.05238
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.05238
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (29 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.24% (0.05238) | 92.27th | v5 (v2026.06.15) |
| Sep 22, 2026 | 5.24% (0.05238) | 92.15th | v5 (v2026.06.15) |
| Sep 21, 2026 | 4.18% (0.04183) | 90.50th | v5 (v2026.06.15) |
| Sep 6, 2026 | 5.24% (0.05238) | 91.98th | v5 (v2026.06.15) |
| Sep 5, 2026 | 4.18% (0.04183) | 90.29th | v5 (v2026.06.15) |
| Aug 30, 2026 | 5.24% (0.05238) | 91.94th | v5 (v2026.06.15) |
| Aug 28, 2026 | 4.18% (0.04183) | 90.23th | v5 (v2026.06.15) |
| Aug 24, 2026 | 5.24% (0.05238) | 91.89th | v5 (v2026.06.15) |
| Aug 23, 2026 | 4.18% (0.04183) | 90.19th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.24% (0.05238) | 91.43th | v5 (v2026.06.15) |
| Nov 21, 2025 | 1.65% (0.01654) | 81.46th | v4 (v2025.03.14) |
| Nov 18, 2025 | 4.24% (0.04241) | 87.66th | v4 (v2025.03.14) |
| May 25, 2025 | 1.99% (0.01993) | 82.70th | v4 (v2025.03.14) |
| Mar 30, 2025 | 0.98% (0.00977) | 74.68th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.60% (0.02595) | 75.99th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.98% (0.00977) | 75.15th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.45% (0.00447) | 75.82th | v3 (v2023.03.01) |
| Mar 14, 2024 | 0.45% (0.00447) | 74.45th | v3 (v2023.03.01) |
| Nov 23, 2023 | 0.87% (0.00869) | 80.50th | v3 (v2023.03.01) |
| Apr 27, 2023 | 1.03% (0.01034) | 81.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.09% (0.01086) | 82.08th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.81% (0.01806) | 35.10th | v1 |
| Jan 6, 2022 | 1.81% (0.01806) | 34.40th | v1 |
| Sep 1, 2021 | 1.81% (0.01806) | 74.37th | v1 |
| Apr 14, 2021 | 1.81% (0.01806) | 0.00th | v1 |
Weaknesses (2)
References (10)
- http://www.securityfocus.com/bid/106938 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-8789 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1671367 Issue Tracking
- https://github.com/FreeRDP/FreeRDP/commit/2ee663f39dc8dac3d9988e847db19b2d7e3ac8c6 x_refsource_CONFIRMPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00015.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-8789
- https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/ x_refsource_CONFIRMExploitThird Party Advisory
- https://usn.ubuntu.com/3845-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3845-2/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2018-8789
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/106938 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2018-8789 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1671367 | Issue Tracking | |
| https://github.com/FreeRDP/FreeRDP/commit/2ee663f39dc8dac3d9988e847db19b2d7e3ac8c6 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://lists.debian.org/debian-lts-announce/2019/02/msg00015.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-8789 | ||
| https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/ | x_refsource_CONFIRMExploitThird Party Advisory | |
| https://usn.ubuntu.com/3845-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://usn.ubuntu.com/3845-2/ | vendor-advisoryx_refsource_UBUNTU | |
| https://www.cve.org/CVERecord?id=CVE-2018-8789 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner checkpoint
Published Nov 29, 2018
Updated Sep 16, 2024
Reserved Mar 19, 2018
Link CVE-2018-8789
CISA Vulnrichment
Updated n/a