CVE-2019-1559 Detail

Current Description

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).


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  5.9 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00041.html Mailing List  Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00019.html Mailing List  Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00046.html Mailing List  Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00047.html Mailing List  Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00049.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00080.html
http://www.securityfocus.com/bid/107174 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2019:2304
https://access.redhat.com/errata/RHSA-2019:2437
https://access.redhat.com/errata/RHSA-2019:2439
https://access.redhat.com/errata/RHSA-2019:2471
https://access.redhat.com/errata/RHSA-2019:3929
https://access.redhat.com/errata/RHSA-2019:3931
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=e9bbefbf0f24c57645e7ad6a5a71ae649d18ac8e Patch  Third Party Advisory 
https://kc.mcafee.com/corporate/index?page=content&id=SB10282
https://lists.debian.org/debian-lts-announce/2019/03/msg00003.html Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/
https://security.gentoo.org/glsa/201903-10 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20190301-0001/ Patch  Third Party Advisory 
https://security.netapp.com/advisory/ntap-20190301-0002/ Third Party Advisory 
https://security.netapp.com/advisory/ntap-20190423-0002/ Third Party Advisory 
https://support.f5.com/csp/article/K18549143 Third Party Advisory 
https://support.f5.com/csp/article/K18549143?utm_source=f5support&utm_medium=RSS
https://usn.ubuntu.com/3899-1/ Third Party Advisory 
https://www.debian.org/security/2019/dsa-4400 Third Party Advisory 
https://www.openssl.org/news/secadv/20190226.txt Vendor Advisory 
https://www.oracle.com/security-alerts/cpujan2020.html
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html Third Party Advisory 
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
https://www.tenable.com/security/tns-2019-02 Patch  Third Party Advisory 
https://www.tenable.com/security/tns-2019-03

Weakness Enumeration

CWE-ID CWE Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor cwe source acceptance level NIST  

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Change History

35 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-1559
NVD Published Date:
02/27/2019
NVD Last Modified:
05/21/2019
Source:
MITRE