Synopsis

Moderate: nss and nspr security, bug fix, and enhancement update

Type/Severity

Security Advisory: Moderate

Topic

An update for nss and nspr is now available for Red Hat Enterprise Linux 8.

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.

Description

Network Security Services (NSS) is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

Netscape Portable Runtime (NSPR) provides platform independence for non-GUI operating system facilities.

The following packages have been upgraded to a later upstream version: nss (3.44.0), nspr (4.21.0). (BZ#1713187, BZ#1713188)

Security Fix(es):

• nss: NULL pointer dereference in several CMS functions resulting in a denial of service (CVE-2018-18508)
• nss: Out-of-bounds read when importing curve25519 private key (CVE-2019-11719)
• nss: Empty or malformed p256-ECDH public keys may trigger a segmentation fault (CVE-2019-11729)
• nss: PKCS#1 v1.5 signatures can be used for TLS 1.3 (CVE-2019-11727)

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.

Bug Fix(es):

• PQG verify fails when create DSA PQG parameters because the counts aren't returned correctly. (BZ#1685325)
• zeroization of AES context missing (BZ#1719629)
• RSA Pairwise consistency test (BZ#1719630)
• FIPS updated for nss-softoken POST (BZ#1722373)
• DH/ECDH key tests missing for the PG parameters (BZ#1722374)
• NSS should implement continuous random test on it's seed data or use the kernel AF_ALG interface for random (BZ#1725059)
• support setting supported signature algorithms in strsclnt utility (BZ#1725110)
• certutil -F with no parameters is killed with segmentation fault message (BZ#1725115)
• NSS: Support for IKE/IPsec typical PKIX usage so libreswan can use nss without rejecting certs based on EKU (BZ#1725116)
• NSS should use getentropy() for seeding its RNG, not /dev/urandom. Needs update to NSS 3.37 (BZ#1725117)
• Disable TLS 1.3 in FIPS mode (BZ#1725773)
• Wrong alert sent when client uses PKCS#1 signatures in TLS 1.3 (BZ#1728259)
• x25519 allowed in FIPS mode (BZ#1728260)
• post handshake authentication with selfserv does not work if SSL_ENABLE_SESSION_TICKETS is set (BZ#1728261)

Enhancement(s):

• Move IKEv1 and IKEv2 KDF's from libreswan to nss-softkn (BZ#1719628)

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

After installing this update, applications using NSS or NSPR (for example, Firefox) must be restarted for this update to take effect.

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.0 ppc64le
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.0 x86_64

Fixes

• BZ - 1671310 - CVE-2018-18508 nss: NULL pointer dereference in several CMS functions resulting in a denial of service
• BZ - 1685325 - PQG verify fails when create DSA PQG parameters because the counts aren't returned correctly.
• BZ - 1719629 - zeroization of AES context missing [rhel-8.0.0.z]
• BZ - 1719630 - RSA Pairwise consistency test [rhel-8.0.0.z]
• BZ - 1722373 - FIPS updated for nss-softoken POST [rhel-8.0.0.z]
• BZ - 1722374 - DH/ECDH key tests missing for the PG parameters [rhel-8.0.0.z]
• BZ - 1725059 - NSS should implement continuous random test on it's seed data or use the kernel AF_ALG interface for random [rhel-8.0.0.z]
• BZ - 1725110 - support setting supported signature algorithms in strsclnt utility [rhel-8.0.0.z]
• BZ - 1725115 - certutil -F with no parameters is killed with segmentation fault message [rhel-8.0.0.z]
• BZ - 1725116 - NSS: Support for IKE/IPsec typical PKIX usage so libreswan can use nss without rejecting certs based on EKU [rhel-8.0.0.z]
• BZ - 1728259 - Wrong alert sent when client uses PKCS#1 signatures in TLS 1.3 [rhel-8.0.0.z]
• BZ - 1728260 - x25519 allowed in FIPS mode [rhel-8.0.0.z]
• BZ - 1728261 - post handshake authentication with selfserv does not work if SSL_ENABLE_SESSION_TICKETS is set [rhel-8.0.0.z]
• BZ - 1728436 - CVE-2019-11719 nss: Out-of-bounds read when importing curve25519 private key
• BZ - 1728437 - CVE-2019-11729 nss: Empty or malformed p256-ECDH public keys may trigger a segmentation fault
• BZ - 1730988 - CVE-2019-11727 nss: PKCS#1 v1.5 signatures can be used for TLS 1.3

CVEs

• CVE-2018-18508
• CVE-2019-11719
• CVE-2019-11727
• CVE-2019-11729
• CVE-2019-17007

References