{"containers":{"cna":{"affected":[{"product":"OpenSSL","vendor":"OpenSSL","versions":[{"status":"affected","version":"Fixed in OpenSSL 1.0.2r (Affected 1.0.2-1.0.2q)"}]}],"credits":[{"lang":"en","value":"Juraj Somorovsky, Robert Merget and Nimrod Aviram, with additional investigation by Steven Collison and Andrew Hourselt"}],"datePublic":"2019-02-26T00:00:00.000Z","descriptions":[{"lang":"en","value":"If an application encounters a fatal protocol error and then calls SSL_shutdown() twice (once to send a close_notify, and once to receive one) then OpenSSL can respond differently to the calling application if a 0 byte record is received with invalid padding compared to if a 0 byte record is received with an invalid MAC. If the application then behaves differently based on that in a way that is detectable to the remote peer, then this amounts to a padding oracle that could be used to decrypt data. In order for this to be exploitable \"non-stitched\" ciphersuites must be in use. Stitched ciphersuites are optimised implementations of certain commonly used ciphersuites. Also the application must call SSL_shutdown() twice even if a protocol error has occurred (applications should not do this but some do anyway). Fixed in OpenSSL 1.0.2r (Affected 1.0.2-1.0.2q)."}],"metrics":[{"other":{"content":{"lang":"eng","url":"https://www.openssl.org/policies/secpolicy.html#Moderate","value":"Moderate"},"type":"unknown"}}],"problemTypes":[{"descriptions":[{"description":"Padding Oracle","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2021-01-20T14:42:01.000Z","orgId":"3a12439a-ef3a-4c79-92e6-6081a721f1e5","shortName":"openssl"},"references":[{"name":"107174","tags":["vdb-entry","x_refsource_BID"],"url":"http://www.securityfocus.com/bid/107174"},{"name":"GLSA-201903-10","tags":["vendor-advisory","x_refsource_GENTOO"],"url":"https://security.gentoo.org/glsa/201903-10"},{"name":"USN-3899-1","tags":["vendor-advisory","x_refsource_UBUNTU"],"url":"https://usn.ubuntu.com/3899-1/"},{"name":"[debian-lts-announce] 20190301 [SECURITY] [DLA 1701-1] openssl security 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record padding oracle","x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"openssl-security@openssl.org","DATE_PUBLIC":"2019-02-26","ID":"CVE-2019-1559","STATE":"PUBLIC","TITLE":"0-byte record padding oracle"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"OpenSSL","version":{"version_data":[{"version_value":"Fixed in OpenSSL 1.0.2r (Affected 1.0.2-1.0.2q)"}]}}]},"vendor_name":"OpenSSL"}]}},"credit":[{"lang":"eng","value":"Juraj Somorovsky, Robert Merget and Nimrod Aviram, with additional investigation by Steven Collison and Andrew Hourselt"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"If an application encounters a fatal protocol error and then calls SSL_shutdown() twice (once to send a close_notify, and once to receive one) then OpenSSL can respond differently to the calling application if a 0 byte record is received with invalid padding compared to if a 0 byte record is received with an invalid MAC. If the application then behaves differently based on that in a way that is detectable to the remote peer, then this amounts to a padding oracle that could be used to decrypt data. In order for this to be exploitable \"non-stitched\" ciphersuites must be in use. Stitched ciphersuites are optimised implementations of certain commonly used ciphersuites. Also the application must call SSL_shutdown() twice even if a protocol error has occurred (applications should not do this but some do anyway). Fixed in OpenSSL 1.0.2r (Affected 1.0.2-1.0.2q)."}]},"impact":[{"lang":"eng","url":"https://www.openssl.org/policies/secpolicy.html#Moderate","value":"Moderate"}],"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Padding Oracle"}]}]},"references":{"reference_data":[{"name":"107174","refsource":"BID","url":"http://www.securityfocus.com/bid/107174"},{"name":"GLSA-201903-10","refsource":"GENTOO","url":"https://security.gentoo.org/glsa/201903-10"},{"name":"USN-3899-1","refsource":"UBUNTU","url":"https://usn.ubuntu.com/3899-1/"},{"name":"[debian-lts-announce] 20190301 [SECURITY] [DLA 1701-1] openssl security 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19-02-27T23:00:00.000Z","dateReserved":"2018-11-28T00:00:00.000Z","dateUpdated":"2024-09-17T04:20:35.057Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}