Lê Hữu Quang Linh

Researcher fromSTAR Labs SG Pte. Ltd.
#2952of 53,633
85.4Total CVSS
Vulnerabilities · 11
Medium
2
High
9
PT-2023-3608
6.5
2023-05-26
Zyxel · Zyxel Nxc2500 · CVE-2023-34140
**Name of the Vulnerable Software and Affected Versions** Zyxel ATP series versions 4.32 through 5.36 Patch 2 Zyxel USG FLEX series versions 4.50 through 5.36 Patch 2 Zyxel USG FLEX 50(W) series versions 4.16 through 5.36 Patch 2 Zyxel USG20(W)-VPN series versions 4.16 through 5.36 Patch 2 Zyxel VPN series versions 4.30 through 5.36 Patch 2 Zyxel NXC2500 versions 6.10(AAIG.0) through 6.10(AAIG.3) Zyxel NXC5500 versions 6.10(AAOS.0) through 6.10(AAOS.4) **Description** A buffer overflow vulnerability in the CAPWAP daemon could allow an unauthenticated, LAN-based attacker to cause denial of service (DoS) conditions by sending a crafted request. This issue is related to a buffer overflow in the memory, which can be exploited by a remote attacker to cause a denial of service. **Recommendations** For Zyxel ATP series versions 4.32 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel USG FLEX series versions 4.50 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel USG FLEX 50(W) series versions 4.16 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel USG20(W)-VPN series versions 4.16 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel VPN series versions 4.30 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel NXC2500 versions 6.10(AAIG.0) through 6.10(AAIG.3), update to a version later than 6.10(AAIG.3). For Zyxel NXC5500 versions 6.10(AAOS.0) through 6.10(AAOS.4), update to a version later than 6.10(AAOS.4). As a temporary workaround, consider disabling the CAPWAP daemon until a patch is available.
PT-2023-3686
8.3
2023-05-26
Zyxel · Zyxel Nxc2500 · CVE-2023-34141
**Name of the Vulnerable Software and Affected Versions** Zyxel ATP series firmware versions 5.00 through 5.36 Patch 2 Zyxel USG FLEX series firmware versions 5.00 through 5.36 Patch 2 Zyxel USG FLEX 50(W) series firmware versions 5.00 through 5.36 Patch 2 Zyxel USG20(W)-VPN series firmware versions 5.00 through 5.36 Patch 2 Zyxel VPN series firmware versions 5.00 through 5.36 Patch 2 Zyxel NXC2500 firmware versions 6.10(AAIG.0) through 6.10(AAIG.3) Zyxel NXC5500 firmware versions 6.10(AAOS.0) through 6.10(AAOS.4) **Description** A command injection vulnerability in the access point management feature could allow an unauthenticated, LAN-based attacker to execute some OS commands on an affected device if the attacker could trick an authorized administrator to add their IP address to the managed AP list in advance. The vulnerability is related to the failure to neutralize special elements used in the operating system command. **Recommendations** For Zyxel ATP series firmware versions 5.00 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel USG FLEX series firmware versions 5.00 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel USG FLEX 50(W) series firmware versions 5.00 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel USG20(W)-VPN series firmware versions 5.00 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel VPN series firmware versions 5.00 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel NXC2500 firmware versions 6.10(AAIG.0) through 6.10(AAIG.3), update to a version later than 6.10(AAIG.3). For Zyxel NXC5500 firmware versions 6.10(AAOS.0) through 6.10(AAOS.4), update to a version later than 6.10(AAOS.4). As a temporary workaround, consider restricting access to the access point management feature to minimize the risk of exploitation.
PT-2023-3691
8.3
2023-05-26
Zyxel · Zyxel Atp Series · CVE-2023-34138
**Name of the Vulnerable Software and Affected Versions** Zyxel ATP series firmware versions 4.60 through 5.36 Patch 2 Zyxel USG FLEX series firmware versions 4.60 through 5.36 Patch 2 Zyxel USG FLEX 50(W) series firmware versions 4.60 through 5.36 Patch 2 Zyxel USG20(W)-VPN series firmware versions 4.60 through 5.36 Patch 2 Zyxel VPN series firmware versions 4.60 through 5.36 Patch 2 **Description** A command injection vulnerability in the hotspot management feature could allow an unauthenticated, LAN-based attacker to execute some OS commands on an affected device if the attacker could trick an authorized administrator to add their IP address to the list of trusted RADIUS clients in advance. The vulnerability is related to the failure to neutralize special elements used in the operating system command. **Recommendations** For Zyxel ATP series firmware versions 4.60 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel USG FLEX series firmware versions 4.60 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel USG FLEX 50(W) series firmware versions 4.60 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel USG20(W)-VPN series firmware versions 4.60 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. For Zyxel VPN series firmware versions 4.60 through 5.36 Patch 2, update to a version later than 5.36 Patch 2. As a temporary workaround, consider restricting access to the hotspot management feature until a patch is available.