CVE-2022-45440
published 2023-01-17CVE-2022-45440: A vulnerability exists in the FTP server of the Zyxel AX7501-B0 firmware prior to V5.17(ABPC.3)C0, which processes symbolic links on external storage media. A…
PriorityP277medium4.4CVSS 3.1
AVLACLPRHUINSUCHINAN
ITWVulnCheck KEV
Exploited in the wild
EPSS
0.25%
16.1th percentile
A vulnerability exists in the FTP server of the Zyxel AX7501-B0 firmware prior to V5.17(ABPC.3)C0, which processes symbolic links on external storage media. A local authenticated attacker with administrator privileges could abuse this vulnerability to access the root file system by creating a symbolic link on external storage media, such as a USB flash drive, and then logging into the FTP server on a vulnerable device.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| zyxel | ax7501-b0_firmware | < V5.17(ABPC.3)C0 | V5.17(ABPC.3)C0 |
| zyxel | ax7501-b0_firmware | < 5.17\(abpc.3\)c0 | 5.17\(abpc.3\)c0 |
CVSS provenance
nvdv3.14.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
vulncheck4.4MEDIUM
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GHSA
GHSA-rpwq-xw4m-459x: A vulnerability exists in the FTP server of the Zyxel AX7501-B0 firmware prior to V5
ghsa_unreviewed·2023-01-17
CVE-2022-45440 [MEDIUM] CWE-552 GHSA-rpwq-xw4m-459x: A vulnerability exists in the FTP server of the Zyxel AX7501-B0 firmware prior to V5
A vulnerability exists in the FTP server of the Zyxel AX7501-B0 firmware prior to V5.17(ABPC.3)C0, which processes symbolic links on external storage media. A local authenticated attacker with administrator privileges could abuse this vulnerability to access the root file system by creating a symbolic link on external storage media, such as a USB flash drive, and then logging into the FTP server on a vulnerable device.
VulnCheck
Zyxel ax7501-b0_firmware Improper Link Resolution Before File Access ('Link Following')
vulncheck·2022·CVSS 4.4
CVE-2022-45440 [MEDIUM] Zyxel ax7501-b0_firmware Improper Link Resolution Before File Access ('Link Following')
Zyxel ax7501-b0_firmware Improper Link Resolution Before File Access ('Link Following')
A vulnerability exists in the FTP server of the Zyxel AX7501-B0 firmware prior to V5.17(ABPC.3)C0, which processes symbolic links on external storage media. A local authenticated attacker with administrator privileges could abuse this vulnerability to access the root file system by creating a symbolic link on external storage media, such as a USB flash drive, and then logging into the FTP server on a vulnerable device.
Affected: Zyxel ax7501-b0_firmware
Required Action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Exploitation References: https://levelblue.com/blogs/labs-research/ngioweb-remains-active-7-ye
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-cleartext-storage-of-wifi-credentials-and-improper-symbolic-links-of-ftp-for-ax7501-b0-cpehttps://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-cleartext-storage-of-wifi-credentials-and-improper-symbolic-links-of-ftp-for-ax7501-b0-cpe
2023-01-17
Published
Exploited in the wild