Vulnerability Description
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).
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | >= 1.0.2, <= 1.0.2s |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00054.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00072.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00016.html
- http://packetstormsecurity.com/files/154467/Slackware-Security-Advisory-openssl-
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=08229ad838c50f6
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=631f94db0065c78
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=e21f8cf78a125cd
- 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.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://seclists.org/bugtraq/2019/Oct/0
- https://seclists.org/bugtraq/2019/Oct/1
- https://seclists.org/bugtraq/2019/Sep/25
FAQ
What is CVE-2019-1563?
CVE-2019-1563 is a vulnerability with a CVSS score of 3.7 (LOW). 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 recove...
How severe is CVE-2019-1563?
CVE-2019-1563 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-1563?
Check the references section above for vendor advisories and patch information. Affected products include: Openssl Openssl.