PT-2022-18082 · Unknown+1 · Libnvram.So+2

Francesco Benvenuto · Published 2022-05-12 · Updated 2023-07-11 · CVE-2022-26781

Positive Technologies (AI Summary)

CVSS v3.1

9.9

Critical

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions InRouter302 version 3.5.4

Description The issue is related to improper input validation vulnerabilities in the libnvram.so nvram import functionality and the httpd's user define print function. A specially-crafted file can lead to remote code execution. An attacker can send a sequence of requests to trigger this vulnerability. Controlling the user define timeout nvram variable can also lead to remote code execution.

Recommendations For InRouter302 version 3.5.4, consider disabling the user define print function and restrict access to the user define timeout nvram variable to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

RCE

Weakness Enumeration

CWE-787

CWE-20

Related Identifiers

CVE-2022-26781

Affected Products

Inrouter302

Httpd

Libnvram.So

References · 4

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2022-1481 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-26781 · Security Note
• https://inhandnetworks.com/upload/attachment/202205/10/InHand-PSA-2022-01.pdf · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-26781 · Vendor Advisory