CVE-2019-1559

 

Published at: - 28-02-2019 12:29

Last modified: - 12-09-2022 07:47

Total changes: - 6

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).

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

 

Verification logic

 

Reference

• https://www.openssl.org/news/secadv/20190226.txt
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=e9bbefbf0f24c57645e7ad6a5a71ae649d18ac8e
• USN-3899-1-Third Party Advisory
• 107174-Third Party Advisory, VDB Entry
• DSA-4400-Third Party Advisory
• [debian-lts-announce] 20190301 [SECURITY] [DLA 1701-1] openssl security update-Mailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20190301-0002/
• https://security.netapp.com/advisory/ntap-20190301-0001/
• GLSA-201903-10-Third Party Advisory
• https://support.f5.com/csp/article/K18549143
• https://www.tenable.com/security/tns-2019-02
• openSUSE-SU-2019:1076-Mailing List, Third Party Advisory
• openSUSE-SU-2019:1105-Mailing List, Third Party Advisory
• openSUSE-SU-2019:1175-Mailing List, Third Party Advisory
• openSUSE-SU-2019:1173-Mailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20190423-0002/
• https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
• https://www.tenable.com/security/tns-2019-03
• https://kc.mcafee.com/corporate/index?page=content&id=SB10282
• openSUSE-SU-2019:1432-Mailing List, Third Party Advisory
• openSUSE-SU-2019:1637-Mailing List, Third Party Advisory
• https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
• RHSA-2019:2304-Third Party Advisory
• RHSA-2019:2437-Third Party Advisory
• RHSA-2019:2439-Third Party Advisory
• RHSA-2019:2471-Third Party Advisory
• FEDORA-2019-db06efdea1-Mailing List, Third Party Advisory
• FEDORA-2019-00c25b9379-Mailing List, Third Party Advisory
• FEDORA-2019-9a0a7c0986-Mailing List, Third Party Advisory
• https://support.f5.com/csp/article/K18549143?utm_source=f5support&utm_medium=RSS
• https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
• RHSA-2019:3929-Third Party Advisory
• RHSA-2019:3931-Third Party Advisory
• https://www.oracle.com/security-alerts/cpujan2020.html
• USN-4376-2-Broken Link
• https://www.oracle.com/security-alerts/cpujan2021.html

 

Keywords

NVD

 

CVE-2019-1559

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures