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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: nss-softokn security update
Advisory ID:       RHSA-2021:0758-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:0758
Issue date:        2021-03-09
CVE Names:         CVE-2019-11756 CVE-2019-17006 CVE-2020-12403 
=====================================================================

1. Summary:

An update for nss-softokn is now available for Red Hat Enterprise Linux 7.4
Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update
Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP
Solutions.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Server AUS (v. 7.4) - x86_64
Red Hat Enterprise Linux Server E4S (v. 7.4) - ppc64le, x86_64
Red Hat Enterprise Linux Server TUS (v. 7.4) - x86_64

3. Description:

The nss-softokn package provides the Network Security Services Softoken
Cryptographic Module.

Security Fix(es):

* nss: Use-after-free in sftk_FreeSession due to improper refcounting
(CVE-2019-11756)

* nss: Check length of inputs for cryptographic primitives (CVE-2019-17006)

* nss: CHACHA20-POLY1305 decryption with undersized tag leads to
out-of-bounds read (CVE-2020-12403)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1774835 - CVE-2019-11756 nss: Use-after-free in sftk_FreeSession due to
 improper refcounting
1775916 - CVE-2019-17006 nss: Check length of inputs for cryptographic
 primitives
1868931 - CVE-2020-12403 nss: CHACHA20-POLY1305 decryption with undersized tag
 leads to out-of-bounds read

6. Package List:

Red Hat Enterprise Linux Server AUS (v. 7.4):

Source:
nss-softokn-3.28.3-10.el7_4.src.rpm

x86_64:
nss-softokn-3.28.3-10.el7_4.i686.rpm
nss-softokn-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-debuginfo-3.28.3-10.el7_4.i686.rpm
nss-softokn-debuginfo-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-devel-3.28.3-10.el7_4.i686.rpm
nss-softokn-devel-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-freebl-3.28.3-10.el7_4.i686.rpm
nss-softokn-freebl-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-freebl-devel-3.28.3-10.el7_4.i686.rpm
nss-softokn-freebl-devel-3.28.3-10.el7_4.x86_64.rpm

Red Hat Enterprise Linux Server E4S (v. 7.4):

Source:
nss-softokn-3.28.3-10.el7_4.src.rpm

ppc64le:
nss-softokn-3.28.3-10.el7_4.ppc64le.rpm
nss-softokn-debuginfo-3.28.3-10.el7_4.ppc64le.rpm
nss-softokn-devel-3.28.3-10.el7_4.ppc64le.rpm
nss-softokn-freebl-3.28.3-10.el7_4.ppc64le.rpm
nss-softokn-freebl-devel-3.28.3-10.el7_4.ppc64le.rpm

x86_64:
nss-softokn-3.28.3-10.el7_4.i686.rpm
nss-softokn-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-debuginfo-3.28.3-10.el7_4.i686.rpm
nss-softokn-debuginfo-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-devel-3.28.3-10.el7_4.i686.rpm
nss-softokn-devel-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-freebl-3.28.3-10.el7_4.i686.rpm
nss-softokn-freebl-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-freebl-devel-3.28.3-10.el7_4.i686.rpm
nss-softokn-freebl-devel-3.28.3-10.el7_4.x86_64.rpm

Red Hat Enterprise Linux Server TUS (v. 7.4):

Source:
nss-softokn-3.28.3-10.el7_4.src.rpm

x86_64:
nss-softokn-3.28.3-10.el7_4.i686.rpm
nss-softokn-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-debuginfo-3.28.3-10.el7_4.i686.rpm
nss-softokn-debuginfo-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-devel-3.28.3-10.el7_4.i686.rpm
nss-softokn-devel-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-freebl-3.28.3-10.el7_4.i686.rpm
nss-softokn-freebl-3.28.3-10.el7_4.x86_64.rpm
nss-softokn-freebl-devel-3.28.3-10.el7_4.i686.rpm
nss-softokn-freebl-devel-3.28.3-10.el7_4.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2019-11756
https://access.redhat.com/security/cve/CVE-2019-17006
https://access.redhat.com/security/cve/CVE-2020-12403
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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