CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.9 | $0-$5k | 0.00 |
A vulnerability was found in Cisco Umbrella Enterprise Roaming Client (version now known). It has been declared as critical. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:
A vulnerability in the Cisco Umbrella Enterprise Roaming Client (ERC) could allow an authenticated, local attacker to elevate privileges to Administrator. To exploit the vulnerability, the attacker must authenticate with valid local user credentials. This vulnerability is due to improper implementation of file system permissions, which could allow non-administrative users to place files within restricted directories. An attacker could exploit this vulnerability by placing an executable file within the restricted directory, which when executed by the ERC client, would run with Administrator privileges.
The bug was discovered 09/05/2018. The weakness was disclosed 10/05/2018 as cisco-sa-20180905-umbrella-fil as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2018-0438 since 11/26/2017. An attack has to be approached locally. Required for exploitation is a single authentication. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.
It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 30 days. During that time the estimated underground price was around $5k-$25k.
Upgrading eliminates this vulnerability.
The vulnerability is also documented in the vulnerability database at Exploit-DB (45339). The entry 124836 is pretty similar.
Product
Vendor
Name
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: 6.5VulDB Meta Temp Score: 6.3
VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.8
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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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: Access controlCWE: CWE-264
ATT&CK: T1068
Local: Yes
Remote: No
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
11/26/2017 🔍09/05/2018 🔍
09/05/2018 🔍
10/05/2018 🔍
10/05/2018 🔍
10/06/2018 🔍
03/30/2020 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-20180905-umbrella-fil
Status: Confirmed
CVE: CVE-2018-0438 (🔍)
SecurityFocus: 105286 - Cisco Umbrella Enterprise Roaming Client CVE-2018-0438 Local Privilege Escalation Vulnerability
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍
Entry
Created: 10/06/2018 07:49Updated: 03/30/2020 09:21
Changes: 10/06/2018 07:49 (61), 03/30/2020 09:21 (6)
Complete: 🔍
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