CVSS 5.3 · Medium EPSS 0,39%
Kerentanan Improper Validation of Specified Quantity in Input pada openssl. Skor CVSS 3.1 5.3 (Medium) menurut CISA ADP.
Issue summary: An established DTLS 1.2 association using an AEAD cipher suite can be terminated by a single unauthenticated datagram whose encrypted fragment is shorter than the mandatory explicit IV and authentication tag overhead. Impact summary: An attacker who can send a datagram that is routed to an existing DTLS 1.2 association can tear that association down without knowing any key material. This is a Denial of Service limited to the targeted association. There is no memory safety or confidentiality impact. CWE: CWE-1284: Improper Validation of Specified Quantity in Input Description: In TLS 1.2 and DTLS 1.2 every record protected by an AEAD cipher suite carries an explicit IV followed by the ciphertext and an authentication tag. When decrypting such a record the record layer passed the record length to the cipher implementation before checking that the record was long enough to contain the explicit IV and the tag. For a record shorter than that overhead the cipher implementation rejected the impossible length, and the record layer treated this as an internal failure and raised a fatal internal_error alert instead of treating the record as one that failed authentication. In TLS 1.2 the same record causes a fatal internal_error alert instead of the expected bad_record_mac alert. Since any undecryptable record already terminates a TLS connection, this is a protocol conformance issue rather than a security issue in TLS. The fix validates the record length against the explicit IV and tag length before any AEAD processing, so that TLS reports bad_record_mac and DTLS silently discards the record. FIPS impact: no The affected code is outside the FIPS module boundary.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| openssl | openssl | Versi 1.1.1 hingga sebelum 1.1.1zj |
| openssl | openssl | Versi 3.0.0 hingga sebelum 3.0.23 |
| openssl | openssl | Versi 3.4.0 hingga sebelum 3.4.8 |
| openssl | openssl | Versi 3.5.0 hingga sebelum 3.5.9 |
| openssl | openssl | Versi 3.6.0 hingga sebelum 3.6.5 |
| openssl | openssl | Versi 4.0.0 hingga sebelum 4.0.3 |