CVE-2021-27137 | 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).
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).
- 🔗 svn.dd-wrt.com/changeset/45724
- 🔗 ssd-disclosure.com/ssd-advisory-dd-wrt-upnp-buffer-overflow/
- 🔗 securityaffairs.com/193290/uncategorized/iot-botnet-c0xmo-add…
- 🔗 www.bleepingcomputer.com/news/security/c0xmo-botnet-spreads-via-dd…
- 🔗 www.fortinet.com/blog/threat-research/inside-cross-platfor…
- 🔗 www.cisa.gov/known-exploited-vulnerabilities-catalog
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CVE-2021-27137 | 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).
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. Exploita