VDB-131820 · CVE-2018-20181 · BID 106938

rdesktop up to 1.8.3 seamless_process integer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in rdesktop up to 1.8.3. The impacted element is the function seamless_process. The manipulation results in integer overflow. This vulnerability is known as CVE-2018-20181. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in rdesktop up to 1.8.3. It has been classified as critical. Affected is the function seamless_process. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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

The bug was discovered 02/05/2019. The weakness was published 03/15/2019 (Website). The advisory is shared for download at research.checkpoint.com. This vulnerability is traded as CVE-2018-20181 since 12/17/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 38 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371697 (Remote Desktop Protocol Client 'rdesktop' 1.8.3 and Prior Multiple Security Vulnerabilities).

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†). Similar entries are available at VDB-127328, VDB-127329, VDB-127330 and VDB-127331. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

License

Website

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: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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

12/17/2018 🔍
02/05/2019 +50 days 🔍
02/05/2019 +0 days 🔍
03/15/2019 +38 days 🔍
03/16/2019 +1 days 🔍
08/01/2023 +1599 days 🔍

Sourcesinfo

Product: github.com

Advisory: 4dca546d04321a610c1835010b5dad85163b65e1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-20181 (🔍)
GCVE (CVE): GCVE-0-2018-20181
GCVE (VulDB): GCVE-100-131820
SecurityFocus: 106938 - RDP Client 'FreeRDP' And 'rdesktop' Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 03/16/2019 07:49
Updated: 08/01/2023 19:20
Changes: 03/16/2019 07:49 (59), 05/17/2020 09:30 (4), 08/01/2023 19:13 (4), 08/01/2023 19:20 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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