rdesktop up to 1.8.3 ui_clip_handle_data memory corruption

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.5	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in rdesktop up to 1.8.3. Impacted is the function ui_clip_handle_data. Executing a manipulation can lead to memory corruption. The identification of this vulnerability is CVE-2018-8800. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in rdesktop up to 1.8.3. This vulnerability affects the function ui_clip_handle_data. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

rdesktop versions up to and including v1.8.3 contain a Heap-Based Buffer Overflow in function ui_clip_handle_data() that results in a memory corruption and probably even a remote code execution.

The bug was discovered 02/05/2019. The weakness was shared 02/05/2019 (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2018-8800 since 03/19/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 277595 (Fedora Security Update for rdesktop (FEDORA-2019-5146cd34e2)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 106938†). The entries VDB-127328, VDB-127329, VDB-127330 and VDB-127331 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

rdesktop

Version

License

open-source

Website

Product: https://github.com/rdesktop/rdesktop/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

03/19/2018 🔍
02/05/2019 +323 days 🔍
02/05/2019 +0 days 🔍
02/05/2019 +0 days 🔍
02/06/2019 +1 days 🔍
07/06/2023 +1611 days 🔍

Sourcesinfo

Product: github.com

Advisory: DLA 1683-1⛔
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-8800 (🔍)
GCVE (CVE): GCVE-0-2018-8800
GCVE (VulDB): GCVE-100-130564
SecurityFocus: 106938 - RDP Client 'FreeRDP' And 'rdesktop' Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 02/06/2019 13:52
Updated: 07/06/2023 12:13
Changes: 02/06/2019 13:52 (57), 05/08/2020 15:54 (5), 07/06/2023 12:13 (4)
Complete: 🔍
Cache ID: 216::103