Lenovo System Update up to 5.07 Administrator Account Credentials credentials management
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.3 | $0-$5k | 0.00 |
A vulnerability was found in Lenovo System Update up to 5.07. It has been rated as problematic. This issue affects an unknown functionality of the component Administrator Account. The manipulation as part of a Credentials leads to a credentials management vulnerability. Using CWE to declare the problem leads to CWE-255. Impacted is confidentiality, integrity, and availability. The summary by CVE is:
Lenovo System Update (formerly ThinkVantage System Update) before 5.07.0019 allows local users to gain privileges by making a prediction of tvsu_tmp_xxxxxXXXXX account credentials that requires knowledge of the time that this account was created, aka a "temporary administrator account vulnerability."
The bug was discovered 11/19/2015. The weakness was presented 04/24/2017 (Website). The advisory is shared at support.lenovo.com. The identification of this vulnerability is CVE-2015-8109 since 11/11/2015. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1552 for this issue.
The vulnerability was handled as a non-public zero-day exploit for at least 522 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 124280 (Lenovo System Update Service Multiple Security Vulnerabilities).
Upgrading to version 5.07.0019 eliminates this vulnerability.
See 75209, 75210, 75211 and 100494 for similar entries.
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: 5.5VulDB Meta Temp Score: 5.4
VulDB Base Score: 4.1
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.0
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
Class: Credentials managementCWE: CWE-255
ATT&CK: T1552
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 |
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: System Update 5.07.0019
Timeline
11/11/2015 🔍11/19/2015 🔍
04/14/2017 🔍
04/24/2017 🔍
04/24/2017 🔍
04/24/2017 🔍
12/21/2020 🔍
Sources
Vendor: lenovo.comAdvisory: support.lenovo.com
Researcher: Sofiane Talmat
Status: Not defined
Confirmation: 🔍
CVE: CVE-2015-8109 (🔍)
SecurityFocus: 98039 - Lenovo System Update CVE-2015-8109 Local Privilege Escalation Vulnerability
OSVDB: - CVE-2015-8109 - Lenovo System Update - Temporary Administrator Account Issue
See also: 🔍
Entry
Created: 04/24/2017 14:39Updated: 12/21/2020 13:16
Changes: 04/24/2017 14:39 (65), 09/20/2020 11:36 (5), 12/21/2020 13:16 (2)
Complete: 🔍
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