Bug 1730988 (CVE-2019-11727) - CVE-2019-11727 nss: PKCS#1 v1.5 signatures can be used for TLS 1.3
Summary: CVE-2019-11727 nss: PKCS#1 v1.5 signatures can be used for TLS 1.3
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-11727
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1733035 1733036 1777715
Blocks: 1729336
TreeView+ depends on / blocked
 
Reported: 2019-07-18 06:02 UTC by Doran Moppert
Modified: 2021-02-16 21:41 UTC (History)
3 users (show)

Fixed In Version: nss 3.44.1
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2019-07-31 01:18:32 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Mozilla Foundation 1552208 0 P1 RESOLVED NSS client will sign CertificateVerify message with rsa_pkcs1_sha256 SignatureScheme in TLS 1.3 2020-11-23 06:57:29 UTC
Red Hat Product Errata RHSA-2019:1951 0 None None None 2019-07-30 19:49:58 UTC
Red Hat Product Errata RHSA-2020:4076 0 None None None 2020-09-29 20:58:02 UTC

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
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