Security advisory
In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the public RSA key, using a Bleichenbacher padding oracle attack. Applications are not affected if they use a certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the correct recipient info to decrypt. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-1563
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:08 UTC · Revision 1
Source evidence
In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the public RSA key, using a Bleichenbacher padding oracle attack. Applications are not affected if they use a certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the correct recipient info to decrypt. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).
osv:CVE-2019-1563
Complete source record
{
"id": "69c2fb0540ddf3bf9183b4ab1b93858a09d1372b83ae1300c6be3a2fd6db64f3",
"url": "https://osv.dev/vulnerability/CVE-2019-1563",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-1563",
"summary": "In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the public RSA key, using a Bleichenbacher padding oracle attack. Applications are not affected if they use a certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the correct recipient info to decrypt. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).",
"evidence": "osv:CVE-2019-1563",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2019-1563",
"aliases": [
"CVE-2019-1563"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/openssl/openssl",
"type": "GIT",
"events": [
{
"introduced": "e818b74be2170fbe957a07b0da4401c2b694b3b8"
},
{
"last_affected": "e818b74be2170fbe957a07b0da4401c2b694b3b8"
},
{
"introduced": "7ea5bd2b52d0e81eaef3d109b3b12545306f201c"
},
{
"last_affected": "7ea5bd2b52d0e81eaef3d109b3b12545306f201c"
},
{
"introduced": "e04bd3433fd84e1861bf258ea37928d9845e6a86"
},
{
"last_affected": "e04bd3433fd84e1861bf258ea37928d9845e6a86"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2"
},
{
"last_affected": "1.0.2s"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.1.0"
},
{
"last_affected": "1.1.0k"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.1.1"
},
{
"last_affected": "1.1.1c"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"OpenSSL_1_1_1w",
"OpenSSL_1_0_2u",
"OpenSSL_1_1_0l"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-1563.json"
}
}
],
"modified": "2026-10-24T10:30:35.841801509Z",
"provider": "osv",
"references": [
"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=08229ad838c50f644d7e928e2eef147b4308ad64",
"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=631f94db0065c78181ca9ba5546ebc8bb3884b97",
"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=e21f8cf78a125cd3c8c0d1a1a6c8bb0b901f893f",
"https://kc.mcafee.com/corporate/index?page=content&id=SB10365",
"https://lists.debian.org/debian-lts-announce/2019/09/msg00026.html",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/",
"https://seclists.org/bugtraq/2019/Oct/0",
"https://seclists.org/bugtraq/2019/Oct/1",
"https://seclists.org/bugtraq/2019/Sep/25",
"https://support.f5.com/csp/article/K97324400?utm_source=f5support&%3Butm_medium=RSS",
"https://usn.ubuntu.com/4376-1/",
"https://usn.ubuntu.com/4376-2/",
"https://usn.ubuntu.com/4504-1/",
"https://www.oracle.com/security-alerts/cpuapr2020.html",
"https://www.oracle.com/security-alerts/cpujan2020.html",
"https://www.oracle.com/security-alerts/cpujul2020.html",
"https://www.oracle.com/security-alerts/cpuoct2020.html",
"https://www.tenable.com/security/tns-2019-09",
"https://security.gentoo.org/glsa/201911-04",
"https://security.netapp.com/advisory/ntap-20190919-0002/",
"https://www.debian.org/security/2019/dsa-4539",
"https://www.debian.org/security/2019/dsa-4540",
"https://www.openssl.org/news/secadv/20190910.txt",
"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2019-1563",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 433836,
"published_at": "2019-09-10T17:15:11.89+00:00"
}