ZyXEL ZyWALL USG Internet Key Exchange Feature Bleichenbacher cryptographic issues
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.7 | $5k-$25k | 0.00 |
A vulnerability was found in ZyXEL ZyWALL USG (Firewall Software) (unknown version). It has been declared as critical. This vulnerability affects an unknown code block of the component Internet Key Exchange Feature. The manipulation with an unknown input leads to a cryptographic issues vulnerability (Bleichenbacher). The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
ZyXEL ZyWALL/USG series devices have a Bleichenbacher vulnerability in their Internet Key Exchange (IKE) handshake implementation used for IPsec based VPN connections.
The bug was discovered 08/13/2018. The weakness was shared 08/15/2018 (Website). The advisory is available at ftp.zyxel.com. This vulnerability was named CVE-2018-9129 since 03/30/2018. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/16/2020). This vulnerability is assigned to T1600 by the MITRE ATT&CK project.
The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Product
Type
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: 5.7VulDB Meta Temp Score: 5.7
VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 5.9
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
Name: BleichenbacherClass: Cryptographic issues / Bleichenbacher
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍
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 |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
03/30/2018 🔍08/13/2018 🔍
08/15/2018 🔍
08/15/2018 🔍
08/16/2018 🔍
03/16/2020 🔍
Sources
Vendor: zyxel.comAdvisory: ftp.zyxel.com
Status: Not defined
Confirmation: 🔍
CVE: CVE-2018-9129 (🔍)
Entry
Created: 08/16/2018 06:39Updated: 03/16/2020 09:59
Changes: 08/16/2018 06:39 (58), 03/16/2020 09:59 (2)
Complete: 🔍
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