PRIOn knowledge basePRION:CVE-2019-1559Design/Logic Flaw
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
5.7 Medium
AI Score
Confidence
High
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.008 Low
EPSS
Percentile
81.3%
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).
References
lists.opensuse.org/opensuse-security-announce/2019-03/msg00041.html
lists.opensuse.org/opensuse-security-announce/2019-04/msg00019.html
lists.opensuse.org/opensuse-security-announce/2019-04/msg00046.html
lists.opensuse.org/opensuse-security-announce/2019-04/msg00047.html
lists.opensuse.org/opensuse-security-announce/2019-05/msg00049.html
lists.opensuse.org/opensuse-security-announce/2019-06/msg00080.html
www.securityfocus.com/bid/107174
access.redhat.com/errata/RHSA-2019:2304
access.redhat.com/errata/RHSA-2019:2437
access.redhat.com/errata/RHSA-2019:2439
access.redhat.com/errata/RHSA-2019:2471
access.redhat.com/errata/RHSA-2019:3929
access.redhat.com/errata/RHSA-2019:3931
git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=e9bbefbf0f24c57645e7ad6a5a71ae649d18ac8e
kc.mcafee.com/corporate/index?page=content&id=SB10282
lists.debian.org/debian-lts-announce/2019/03/msg00003.html
lists.fedoraproject.org/archives/list/[email protected]/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/
lists.fedoraproject.org/archives/list/[email protected]/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/
lists.fedoraproject.org/archives/list/[email protected]/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/
security.gentoo.org/glsa/201903-10
security.netapp.com/advisory/ntap-20190301-0001/
security.netapp.com/advisory/ntap-20190301-0002/
security.netapp.com/advisory/ntap-20190423-0002/
support.f5.com/csp/article/K18549143
support.f5.com/csp/article/K18549143?utm_source=f5support&utm_medium=RSS
usn.ubuntu.com/3899-1/
usn.ubuntu.com/4376-2/
www.debian.org/security/2019/dsa-4400
www.openssl.org/news/secadv/20190226.txt
www.oracle.com/security-alerts/cpujan2020.html
www.oracle.com/security-alerts/cpujan2021.html
www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
www.tenable.com/security/tns-2019-02
www.tenable.com/security/tns-2019-03
Related
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
5.7 Medium
AI Score
Confidence
High
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.008 Low
EPSS
Percentile
81.3%