CVE-2021-27257

CWE-295 — Improper Certificate Validation3 documents3 sources

Severity

6.5MEDIUM

EPSS

0.1%

top 82.21%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Netgear Br200 Firmware Netgear Br500 Firmware Netgear D7800 Firmware +41 more

Timeline

PublishedMar 5

Latest updateMay 24

Description

This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via FTP. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code …

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NExploitability: 2.8 | Impact: 3.6

Affected Packages44 packages

▶NVDnetgear/r7800_firmware< 1.0.2.80

▶NVDnetgear/br200_firmware< 5.10.0.5

▶NVDnetgear/br500_firmware< 5.10.0.5

▶NVDnetgear/d7800_firmware< 1.0.1.60

▶NVDnetgear/lbr20_firmware< 2.6.3.50

Patches

Patch: kb.netgear.com ↗Patch: kb.netgear.com ↗

🔴Vulnerability Details

GHSA

GHSA-q57h-78h9-m59j: This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800↗2022-05-24

▶

CVEList

CVE-2021-27257: This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800↗2021-03-05

▶