CVE-2021-27137

Known Exploited Vulnerability

DD-WRT Stack-Based Buffer Overflow Vulnerability

Vendor / product: DD-WRT / DD-WRT

Description

An issue was discovered in router/upnp/src/ssdp.c in DD-WRT before 45724. An unsafe strcpy in the UPnP handling functionality allows an unauthenticated remote attacker to send a request that would overflow an internal fixed buffer. Exploitation requires the DD-WRT user to enable UPnP (which is off by default, and only listens on internal interfaces by default). This occurs in ssdp_msearch (reachable by an M-SEARCH request).

Weakness classification

• cve@mitre.org: CWE-121

Primary references

• cve@mitre.org — Exploit, Third Party Advisory
• cve@mitre.org — Exploit, Third Party Advisory
• cve@mitre.org — Patch
• cve@mitre.org — Exploit, Third Party Advisory
• cve@mitre.org — Exploit
• 134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Third Party Advisory
• 134c704f-9b21-4f2e-91b3-4a467353bcc0 — US Government Resource