{"id":"CVE-2022-25219","state":"PUBLISHED","title":"A null byte interaction error has been discovered in the code that the telnetd_startup daemon uses to construct a pair of ephemeral passwords that allow a user to spawn a telnet se","description":"A null byte interaction error has been discovered in the code that the telnetd_startup daemon uses to construct a pair of ephemeral passwords that allow a user to spawn a telnet service on the router, and to ensure that the telnet service persists upon reboot. By means of a crafted exchange of UDP packets, an unauthenticated attacker on the local network can leverage this null byte interaction error in such a way as to make those ephemeral passwords predictable (with 1-in-94 odds). Since the attacker must manipulate data processed by the OpenSSL function RSA_public_decrypt(), successful exploitation of this vulnerability depends on the use of an unpadded RSA cipher (CVE-2022-25218).","publishedAt":"2022-03-07T21:56:51.000Z","updatedAt":"2024-08-03T04:36:05.791Z","severity":null,"assigner":"tenable","products":["n/a Phicomm Routers"],"affected":[{"vendor":"n/a","product":"Phicomm Routers","versions":[{"version":"K3 >= 21.5.37.246, K3C >= 32.1.22.113, K2P >= 20.4.1.7, K2 A7 >= 22.6.506.28, K2G A1 >= 22.6.3.20","status":"affected"}]}],"references":["https://www.tenable.com/security/research/tra-2022-01"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:46.971Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/25xxx/CVE-2022-25219.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-25219","state":"PUBLISHED","datePublished":"2022-03-07T21:56:51.000Z","dateUpdated":"2024-08-03T04:36:05.791Z","assignerShortName":"tenable","assignerOrgId":"5ac1ecc2-367a-4d16-a0b2-35d495ddd0be","dateReserved":"2022-02-15T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A null byte interaction error has been discovered in the code that the telnetd_startup daemon uses to construct a pair of ephemeral passwords that allow a user to spawn a telnet service on the router, and to ensure that the telnet service persists upon reboot. By means of a crafted exchange of UDP packets, an unauthenticated attacker on the local network can leverage this null byte interaction error in such a way as to make those ephemeral passwords predictable (with 1-in-94 odds). Since the attacker must manipulate data processed by the OpenSSL function RSA_public_decrypt(), successful exploitation of this vulnerability depends on the use of an unpadded RSA cipher (CVE-2022-25218)."}],"affected":[{"vendor":"n/a","product":"Phicomm Routers","versions":[{"version":"K3 >= 21.5.37.246, K3C >= 32.1.22.113, K2P >= 20.4.1.7, K2 A7 >= 22.6.506.28, K2G A1 >= 22.6.3.20","status":"affected"}]}],"references":[{"url":"https://www.tenable.com/security/research/tra-2022-01","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"description":"Null Byte Interaction Error","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"tenable","dateUpdated":"2022-03-07T21:56:51.000Z","orgId":"5ac1ecc2-367a-4d16-a0b2-35d495ddd0be"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"vulnreport@tenable.com","ID":"CVE-2022-25219","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Phicomm Routers","version":{"version_data":[{"version_value":"K3 >= 21.5.37.246, K3C >= 32.1.22.113, K2P >= 20.4.1.7, K2 A7 >= 22.6.506.28, K2G A1 >= 22.6.3.20"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A null byte interaction error has been discovered in the code that the telnetd_startup daemon uses to construct a pair of ephemeral passwords that allow a user to spawn a telnet service on the router, and to ensure that the telnet service persists upon reboot. By means of a crafted exchange of UDP packets, an unauthenticated attacker on the local network can leverage this null byte interaction error in such a way as to make those ephemeral passwords predictable (with 1-in-94 odds). Since the attacker must manipulate data processed by the OpenSSL function RSA_public_decrypt(), successful exploitation of this vulnerability depends on the use of an unpadded RSA cipher (CVE-2022-25218)."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Null Byte Interaction Error"}]}]},"references":{"reference_data":[{"name":"https://www.tenable.com/security/research/tra-2022-01","refsource":"MISC","url":"https://www.tenable.com/security/research/tra-2022-01"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.tenable.com/security/research/tra-2022-01","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T04:36:05.791Z"}}]}}}