PT-2022-4062 · Dd-Wrt · Dd-Wrt

Francesco Benvenuto · Published 2022-08-05 · Updated 2022-12-02 · CVE-2022-27631

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions DD-WRT versions Revision 32270 through Revision 48599

Description The issue is related to insufficient input validation in the httpd module of DD-WRT, which can be exploited by sending a specially-crafted HTTP request to execute arbitrary code. A memory corruption vulnerability exists in the httpd unescape functionality, allowing an attacker to trigger memory corruption by sending a network request.

Recommendations For DD-WRT versions Revision 32270 through Revision 48599, as a temporary workaround, consider restricting access to the httpd module until a patch is available. Avoid using the vulnerable httpd unescape functionality in the affected API endpoints until the issue is resolved. 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

BDU:2022-04896

CVE-2022-27631

Affected Products

Dd-Wrt

References · 6

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2022-1510 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-27631 · Security Note
• https://bdu.fstec.ru/vul/2022-04896 · Security Note
• https://osv.dev/vulnerability/CVE-2022-27631 · Vendor Advisory
• https://cybersecurity-help.cz/vdb/SB2022072804 · Note
• https://vuldb.com/ru/?id.205791 · Note