CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.8 | $0-$5k | 0.00 |
A vulnerability was found in Lenovo System Update. It has been declared as critical. Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a toctou vulnerability. The CWE definition for the vulnerability is CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:
A race condition vulnerability was reported in Lenovo System Update prior to version 5.07.0106 that could allow escalation of privilege.
The weakness was disclosed 09/15/2020 (Website). It is possible to read the advisory at support.lenovo.com. This vulnerability is known as CVE-2020-8342 since 01/28/2020. Attacking locally is a requirement. The successful exploitation requires a single authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.
Upgrading to version 5.07.0106 eliminates this vulnerability.
The entries VDB-107326, VDB-117384, VDB-136904 and VDB-142346 are pretty similar.
Product
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.0VulDB Meta Temp Score: 5.9
VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.3
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: 🔍
Exploiting
Class: ToctouCWE: CWE-367 / CWE-362
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: System Update 5.07.0106
Timeline
01/28/2020 🔍09/15/2020 🔍
09/16/2020 🔍
09/16/2020 🔍
Sources
Vendor: lenovo.comAdvisory: support.lenovo.com
Status: Not defined
CVE: CVE-2020-8342 (🔍)
See also: 🔍
Entry
Created: 09/16/2020 09:45Updated: 09/16/2020 09:50
Changes: 09/16/2020 09:45 (37), 09/16/2020 09:50 (11)
Complete: 🔍
Cache ID: 3:2AF:103
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