Bug 1730988 (CVE-2019-11727)

Summary: CVE-2019-11727 nss: PKCS#1 v1.5 signatures can be used for TLS 1.3
Product: [Other] Security Response Reporter: Doran Moppert <dmoppert>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: hkario, nss-nspr-maint, security-response-team
Target Milestone: ---Keywords: Reopened, Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: nss 3.44.1 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-07-31 01:18:32 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1733035, 1733036, 1777715    
Bug Blocks: 1729336    

Description Doran Moppert 2019-07-18 06:02:08 UTC
A vulnerability exists where it possible to force Network Security Services (NSS) to sign `CertificateVerify` with PKCS#1 v1.5 signatures when those are the only ones advertised by server in `CertificateRequest` in TLS 1.3. PKCS#1 v1.5 signatures should not be used for TLS 1.3 messages.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2019-21/#CVE-2019-11727

Comment 1 Doran Moppert 2019-07-18 06:02:10 UTC
Acknowledgments:

Name: the Mozilla project
Upstream: Hubert Kario

Comment 2 Product Security DevOps Team 2019-07-18 21:06:59 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-11727

Comment 4 Huzaifa S. Sidhpurwala 2019-07-29 04:33:22 UTC
Upstream commit: https://hg.mozilla.org/projects/nss/rev/17c6fc2ec3c1feaed56ef59b35bf435c7d5c4949

Comment 5 errata-xmlrpc 2019-07-30 19:49:57 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:1951 https://access.redhat.com/errata/RHSA-2019:1951

Comment 6 Product Security DevOps Team 2019-07-31 01:18:32 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-11727

Comment 11 errata-xmlrpc 2020-09-29 20:58:00 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4076 https://access.redhat.com/errata/RHSA-2020:4076