| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 8.4 | $0-$5k | 0.00 |
Summary
A vulnerability labeled as critical has been found in UltraVNC Revision 1198. This impacts an unknown function of the component Client. The manipulation results in memory corruption (Underflow). This vulnerability is identified as CVE-2018-15361. The attack can be executed remotely. There is not any exploit available. It is advisable to implement a patch to correct this issue.
Details
A vulnerability was found in UltraVNC Revision 1198 (Connectivity Software). It has been classified as critical. Affected is an unknown part of the component Client. The manipulation with an unknown input leads to a memory corruption vulnerability (Underflow). CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:
UltraVNC revision 1198 has a buffer underflow vulnerability in VNC client code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199.
The bug was discovered 04/15/2019. The weakness was released 03/05/2019. This vulnerability is traded as CVE-2018-15361 since 08/15/2018. 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 neither technical details nor an exploit publicly available.
The commercial vulnerability scanner Qualys is able to test this issue with plugin 371706 (UltraVNC Multiple Code Execution Vulnerabilities).
Applying the patch Revision 1199 is able to eliminate this problem.
Entries connected to this vulnerability are available at VDB-131356, VDB-131357, VDB-131358 and VDB-131359. Once again VulDB remains the best source for vulnerability data.
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 8.5VulDB Meta Temp Score: 8.4
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
NVD Vector: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Name: UnderflowClass: Memory corruption / Underflow
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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
0-Day Time: 🔍
Patch: Revision 1199
Timeline
08/15/2018 🔍03/05/2019 🔍
03/06/2019 🔍
04/15/2019 🔍
07/26/2023 🔍
Sources
Advisory: ssa-927095Status: Not defined
CVE: CVE-2018-15361 (🔍)
GCVE (CVE): GCVE-0-2018-15361
GCVE (VulDB): GCVE-100-131316
See also: 🔍
Entry
Created: 03/06/2019 07:09Updated: 07/26/2023 12:27
Changes: 03/06/2019 07:09 (59), 05/28/2020 16:53 (1), 07/26/2023 12:27 (5)
Complete: 🔍
Cache ID: 216::103
Once again VulDB remains the best source for vulnerability data.
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