Use of a Broken or Risky Cryptographic Algorithm Affecting nss-sysinit package, versions <0:3.44.0-7.el8_0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-RHEL8-NSSSYSINIT-3919042
- published26 Jul 2021
- disclosed9 Jul 2019
Introduced: 9 Jul 2019
CVE-2019-11727 (opens in a new tab)How to fix?
Upgrade RHEL:8 nss-sysinit to version 0:3.44.0-7.el8_0 or higher.
This issue was patched in RHSA-2019:1951.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nss-sysinit package and not the nss-sysinit package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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. This vulnerability affects Firefox < 68.
References
- https://access.redhat.com/security/cve/CVE-2019-11727
- https://security.gentoo.org/glsa/201908-12
- https://bugzilla.mozilla.org/show_bug.cgi?id=1552208
- https://www.mozilla.org/security/advisories/mfsa2019-21/
- https://access.redhat.com/errata/RHSA-2019:1951
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00006.html