CVE-2019-17023

After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. This vulnerability affects Firefox < 72.

After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. This vulnerability affects Firefox < 72.

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 (3.53.1), nspr (4.25.0). (BZ#1809549, BZ#1809550)

Security Fix(es):

• nss: UAF in sftk_FreeSession due to improper refcounting (CVE-2019-11756)

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

• nss: Side channel vulnerabilities during RSA key generation (CVE-2020-12402)

• nss: TLS 1.3 HelloRetryRequest downgrade request sets client into invalid state (CVE-2019-17023)

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):

• Install of update of nss.x86_64 adds i686 into transaction (BZ#1663187)

• NSS does not set downgrade sentinel in ServerHello.random for TLS 1.0 and TLS 1.1 (BZ#1691409)

• TLS Keying Material Exporter is unsupported by command line tools (BZ#1691454)

• TLS_AES_256_GCM_SHA384 is not marked as FIPS compatible (BZ#1711375)

• Make TLS 1.3 work in FIPS mode (BZ#1724250)

• NSS rejects records with large padding with SHA384 HMAC (BZ#1750921)

• NSS missing IKEv1 Quick Mode KDF (BZ#1809637)

• Name Constraints validation: CN treated as DNS name even when syntactically invalid as DNS name (BZ#1825270)

• FIPS needs nss to restrict valid dh primes to those primes that are approved. (BZ#1854564)

• nss needs to comply to the new SP800-56A rev 3 requirements (BZ#1855825)

Enhancement(s):

• [RFE] nss should use AES for storage of keys (BZ#1723819)

After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. This vulnerability affects Firefox < 72.

These are all security issues fixed in the MozillaFirefox-92.0-1.2 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass Content Security Policy (CSP) restrictions, conduct cross-site scripting (XSS) attacks, or execute arbitrary code.

It was discovered that NSS incorrectly handled the TLS State Machine. A remote attacker could possibly use this issue to cause NSS to hang, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.10. (CVE-2019-17023)

Cesar Pereida Garcia discovered that NSS incorrectly handled DSA key generation. A local attacker could possibly use this issue to perform a timing attack and recover DSA keys. (CVE-2020-12399)