CVE-2019-15801
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. The firmware image contains encrypted passwords that are used to authenticate users wishing to access a diagnostics or password-recovery menu. Using the hardcoded cryptographic key found elsewhere in the firmware, these passwords can be decrypted. This is related to fds_sys_passDebugPasswd_ret() and fds_sys_passRecoveryPasswd_ret() in libfds.so.0.0.
Overview
- CVE ID
- CVE-2019-15801
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2019-11-14T21:15:11
- Last Modified Date
- 2021-07-21T11:39:23
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:zyxel:gs1900-8_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2.50\(aahh.0\)c0 | |
| cpe:2.3:h:zyxel:gs1900-8:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:zyxel:gs1900-8hp_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2.50\(aahi.0\)c0 | |
| cpe:2.3:h:zyxel:gs1900-8hp:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:zyxel:gs1900-10hp_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2.50\(aazi.0\)c0 | |
| cpe:2.3:h:zyxel:gs1900-10hp:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:zyxel:gs1900-16_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2.50\(aahj.0\)c0 | |
| cpe:2.3:h:zyxel:gs1900-16:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:zyxel:gs1900-24e_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2.50\(aahk.0\)c0 | |
| cpe:2.3:h:zyxel:gs1900-24e:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:zyxel:gs1900-24_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2.50\(aahl.0\)c0 | |
| cpe:2.3:h:zyxel:gs1900-24:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:zyxel:gs1900-24hp_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2.50\(aahm.0\)c0 | |
| cpe:2.3:h:zyxel:gs1900-24hp:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:zyxel:gs1900-48_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2.50\(aahn.0\)c0 | |
| cpe:2.3:h:zyxel:gs1900-48:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:zyxel:gs1900-48hp_firmware:*:*:*:*:*:*:*:* | 1 | OR | 2.50\(aaho.0\)c0 | |
| cpe:2.3:h:zyxel:gs1900-48hp:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://www.zyxel.com/support/gs1900-switch-vulnerabilities.shtml | Vendor Advisory |
| https://jasper.la/exploring-zyxel-gs1900-firmware-with-ghidra.html | Exploit Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-15801 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15801 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:09:34 | Added to TrackCVE | |||
| 2022-12-04 06:24:32 | 2019-11-14T21:15Z | 2019-11-14T21:15:11 | CVE Published Date | updated |
| 2022-12-04 06:24:32 | 2021-07-21T11:39:23 | CVE Modified Date | updated | |
| 2022-12-04 06:24:32 | Analyzed | Vulnerability Status | updated |