TI-2018-06336 Aliases CVE-2018-8788 GHSA-j2cm-xc9q-86w4

Out-of-bounds write in Check Point Software Technologies Ltd. FreeRDP

MEDIUM 52CWE-787Published 2018-11-29 · Updated 2024-09-16

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Partial Red Hat: 8 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

FreeRDP prior to version 2.0.0-rc4 contains an Out-Of-Bounds Write of up to 4 bytes in function nsc_rle_decode() that results in a memory corruption and possibly even a remote code execution.

Why it matters now

EPSS 0.074 94th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial FreeRDP (Check Point Software Technologies Ltd.): 2.0.0-rc4Red Hat: 1 advisoryRed Hat: 8 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Check Point Software Technologies Ltd.	FreeRDP	before 2.0.0-rc4	2.0.0-rc4	Patch available	CNA

FreeRDP VendorCheck Point Software Technologies Ltd. Affected before 2.0.0-rc4 Fixed in 2.0.0-rc4 Patch available CNA

CPE configurations NVD · 9

CPE	Versions	Role	Vendor
cpe:2.3:a:freerdp:freerdp::::::::	up to 1.2.0	Vulnerable	FreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:rc1::::::	2.0.0 rc1	Vulnerable	FreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:rc2::::::	2.0.0 rc2	Vulnerable	FreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:rc3::::::	2.0.0 rc3	Vulnerable	FreeRDP
cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::	14.04	Vulnerable	Canonical
cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::	16.04	Vulnerable	Canonical
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::	18.04	Vulnerable	Canonical
cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::*	18.10	Vulnerable	Canonical
cpe:2.3:o:debian:debian_linux:8.0:::::::*	8.0	Vulnerable	Debian

cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:* Versions up to 1.2.0 Vulnerable ·FreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:rc1:*:*:*:*:*:* Versions 2.0.0 rc1 Vulnerable ·FreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:rc2:*:*:*:*:*:* Versions 2.0.0 rc2 Vulnerable ·FreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:rc3:*:*:*:*:*:* Versions 2.0.0 rc3 Vulnerable ·FreeRDP
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

Fix · CNA FreeRDP (Check Point Software Technologies Ltd.) Fixed in 2.0.0-rc4

Red Hat 1 advisory

RHSA-2019:0697 Released 2019-04-02 · Red Hat rating Important
freerdp security update
- Red Hat Enterprise Linux Client (v. 7) freerdp-1.0.2-15.el7_6.1, freerdp-libs-1.0.2-15.el7_6.1, freerdp-plugins-1.0.2-15.el7_6.1
- Red Hat Enterprise Linux Client Optional (v. 7) freerdp-devel-1.0.2-15.el7_6.1
- Red Hat Enterprise Linux Server (v. 7) freerdp-1.0.2-15.el7_6.1, freerdp-libs-1.0.2-15.el7_6.1, freerdp-libs-1.0.2-15.el7_6.1.ppc +1
- Red Hat Enterprise Linux Server Optional (v. 7) freerdp-devel-1.0.2-15.el7_6.1, freerdp-devel-1.0.2-15.el7_6.1.ppc
- Red Hat Enterprise Linux Workstation (v. 7) freerdp-1.0.2-15.el7_6.1, freerdp-libs-1.0.2-15.el7_6.1, freerdp-plugins-1.0.2-15.el7_6.1
- Red Hat Enterprise Linux Workstation Optional (v. 7) freerdp-devel-1.0.2-15.el7_6.1
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) freerdp-1.0.2-15.el7_6.1, freerdp-libs-1.0.2-15.el7_6.1, freerdp-plugins-1.0.2-15.el7_6.1
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) freerdp-devel-1.0.2-15.el7_6.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Advisory · 2018-11-29
Check Point Software Technologies FreeRDP — USN-3845-1
6 records Highest priority Priority MEDIUM 6 MEDIUM
Other records, highest priority first
- TI-2018-06335 Integer overflow in Check Point Software Technologies Ltd. FreeRDPPriority MEDIUM 53
- TI-2018-06334 Incorrect numeric conversion in Check Point Software Technologies Ltd. FreeRDPPriority MEDIUM 53
- TI-2018-06333 Buffer overflow in Check Point Software Technologies Ltd. FreeRDPPriority MEDIUM 52
Show all 6 records → Advisory →
Advisory · 2018-11-29
Check Point Software Technologies FreeRDP — USN-3845-2
4 records Highest priority Priority MEDIUM 4 MEDIUM
Other records, highest priority first
- TI-2018-06335 Integer overflow in Check Point Software Technologies Ltd. FreeRDPPriority MEDIUM 53
- TI-2018-06334 Incorrect numeric conversion in Check Point Software Technologies Ltd. FreeRDPPriority MEDIUM 53
- TI-2018-06337 Out-of-bounds read in Check Point Software Technologies Ltd. FreeRDPPriority MEDIUM 41
Show all 4 records → Advisory →

Show 1 more group

Advisory · 2018-11-29
Check Point Software Technologies FreeRDP — RHSA-2019:0697
3 records Highest priority Priority MEDIUM 3 MEDIUM
Other records, highest priority first
- TI-2018-06335 Integer overflow in Check Point Software Technologies Ltd. FreeRDPPriority MEDIUM 53
- TI-2018-06334 Incorrect numeric conversion in Check Point Software Technologies Ltd. FreeRDPPriority MEDIUM 53
Show all 3 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 6	Affected	No fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)	Fixed	RHSA-2019:0697
Red Hat Enterprise Linux Client Optional (v. 7)	Fixed	RHSA-2019:0697
Red Hat Enterprise Linux Server (v. 7)	Fixed	RHSA-2019:0697
Red Hat Enterprise Linux Server Optional (v. 7)	Fixed	RHSA-2019:0697
Red Hat Enterprise Linux Workstation (v. 7)	Fixed	RHSA-2019:0697
Red Hat Enterprise Linux Workstation Optional (v. 7)	Fixed	RHSA-2019:0697
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)	Fixed	RHSA-2019:0697
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)	Fixed	RHSA-2019:0697

Not affected: 1 product

Red Hat Enterprise Linux 8

Timeline

2026-10-02 Threatist record created from CVE-2018-8788
2026-10-03 Alias added: GHSA-j2cm-xc9q-86w4

References

Exploit 1

https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/

Patch 1

https://github.com/FreeRDP/FreeRDP/commit/d1112c279bd1a327e8e4d0b5f371458bf2579659

Advisory 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences