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Red Hat Security Advisory 2022-4899-01

Red Hat Security Advisory 2022-4899-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength general-purpose cryptography library. compat-openssl11 provides the legacy 1.1 version of OpenSSL for use with older binaries.

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

Synopsis: Important: compat-openssl11 security and bug fix update
Advisory ID: RHSA-2022:4899-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:4899
Issue date: 2022-06-03
CVE Names: CVE-2022-0778
====================================================================

  1. Summary:

An update for compat-openssl11 is now available for Red Hat Enterprise
Linux 9.

Red Hat Product Security has rated this update as having a security impact
of Important. 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.

  1. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream (v. 9) - aarch64, ppc64le, s390x, x86_64

  1. Description:

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and
Transport Layer Security (TLS) protocols, as well as a full-strength
general-purpose cryptography library. compat-openssl11 provides the legacy
1.1 version of OpenSSL for use with older binaries.

Security Fix(es):

  • openssl: Infinite loop in BN_mod_sqrt() reachable when parsing
    certificates (CVE-2022-0778)

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):

  • compat-openssl11 breaks in FIPS (BZ#2091968)
  1. 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

For the update to take effect, all services linked to the OpenSSL library
must be restarted, or the system rebooted.

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

2062202 - CVE-2022-0778 openssl: Infinite loop in BN_mod_sqrt() reachable when parsing certificates

  1. Package List:

Red Hat Enterprise Linux AppStream (v. 9):

Source:
compat-openssl11-1.1.1k-4.el9_0.src.rpm

aarch64:
compat-openssl11-1.1.1k-4.el9_0.aarch64.rpm
compat-openssl11-debuginfo-1.1.1k-4.el9_0.aarch64.rpm
compat-openssl11-debugsource-1.1.1k-4.el9_0.aarch64.rpm

ppc64le:
compat-openssl11-1.1.1k-4.el9_0.ppc64le.rpm
compat-openssl11-debuginfo-1.1.1k-4.el9_0.ppc64le.rpm
compat-openssl11-debugsource-1.1.1k-4.el9_0.ppc64le.rpm

s390x:
compat-openssl11-1.1.1k-4.el9_0.s390x.rpm
compat-openssl11-debuginfo-1.1.1k-4.el9_0.s390x.rpm
compat-openssl11-debugsource-1.1.1k-4.el9_0.s390x.rpm

x86_64:
compat-openssl11-1.1.1k-4.el9_0.i686.rpm
compat-openssl11-1.1.1k-4.el9_0.x86_64.rpm
compat-openssl11-debuginfo-1.1.1k-4.el9_0.i686.rpm
compat-openssl11-debuginfo-1.1.1k-4.el9_0.x86_64.rpm
compat-openssl11-debugsource-1.1.1k-4.el9_0.i686.rpm
compat-openssl11-debugsource-1.1.1k-4.el9_0.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/

  1. References:

https://access.redhat.com/security/cve/CVE-2022-0778
https://access.redhat.com/security/updates/classification/#important

  1. Contact:

The Red Hat security contact is [email protected]. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2022 Red Hat, Inc.
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CVE-2022-0778

The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities pa...

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