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Red Hat Security Advisory 2023-3722-01

Red Hat Security Advisory 2023-3722-01 - 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. Issues addressed include buffer over-read and denial of service vulnerabilities.

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

Synopsis: Moderate: openssl security and bug fix update
Advisory ID: RHSA-2023:3722-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3722
Issue date: 2023-06-21
CVE Names: CVE-2023-0464 CVE-2023-0465 CVE-2023-0466
CVE-2023-1255 CVE-2023-2650
=====================================================================

  1. Summary:

An update for openssl is now available for Red Hat Enterprise Linux 9.

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.

  1. Relevant releases/architectures:

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

Security Fix(es):

  • openssl: Possible DoS translating ASN.1 object identifiers
    (CVE-2023-2650)

  • openssl: Denial of service by excessive resource usage in verifying X509
    policy constraints (CVE-2023-0464)

  • openssl: Invalid certificate policies in leaf certificates are silently
    ignored (CVE-2023-0465)

  • openssl: Certificate policy check not enabled (CVE-2023-0466)

  • openssl: Input buffer over-read in AES-XTS implementation on 64 bit ARM
    (CVE-2023-1255)

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):

  • In FIPS mode, openssl KDFs should only allow selected hash algorithms
    (BZ#2175860)

  • In FIPS mode, openssl should reject short KDF input or output keys or
    provide an indicator (BZ#2175864)

  • In FIPS mode, openssl should provide an indicator for AES-GCM to query
    whether the IV was generated internally or provided externally (BZ#2175868)

  • openssl FIPS mode self-test should zeroize out in verify_integrity in
    providers/fips/self_test.c (BZ#2175873)

  • In FIPS mode, openssl should not support RSA encryption or decryption
    without padding (outside of RSASVE) or provide an indicator (BZ#2178029)

  • In FIPS mode, openssl should reject EVP_PKEY_fromdata() for short DHX
    keys, or provide an indicator (BZ#2178030)

  • In FIPS mode, openssl should not use the legacy ECDSA_do_sign(),
    RSA_public_encrypt(), RSA_private_decrypt() functions for pairwise
    consistency tests (BZ#2178034)

  • In FIPS mode, openssl should enter error state when DH PCT fails
    (BZ#2178039)

  • In FIPS mode, openssl should always run the PBKDF2 lower bounds checks or
    provide an indicator when the pkcs5 parameter is set to 1 (BZ#2178137)

  • Support requiring EMS in TLS 1.2, default to it when in FIPS mode
    (BZ#2188046)

  • OpenSSL rsa_verify_recover doesn’t use the same key checks as rsa_verify
    in FIPS mode (BZ#2188052)

  • RHEL9.0 - sshd dumps core when ibmca engine is configured with
    default_algorithms = CIPHERS or ALL (openssl) (BZ#2211396)

  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/):

2175860 - In FIPS mode, openssl KDFs should only allow selected hash algorithms [rhel-9.2.0.z]
2175864 - In FIPS mode, openssl should reject short KDF input or output keys or provide an indicator [rhel-9.2.0.z]
2175868 - In FIPS mode, openssl should provide an indicator for AES-GCM to query whether the IV was generated internally or provided externally [rhel-9.2.0.z]
2175873 - openssl FIPS mode self-test should zeroize out in verify_integrity in providers/fips/self_test.c [rhel-9.2.0.z]
2178029 - In FIPS mode, openssl should not support RSA encryption or decryption without padding (outside of RSASVE) or provide an indicator [rhel-9.2.0.z]
2178030 - In FIPS mode, openssl should reject EVP_PKEY_fromdata() for short DHX keys, or provide an indicator [rhel-9.2.0.z]
2178034 - In FIPS mode, openssl should not use the legacy ECDSA_do_sign(), RSA_public_encrypt(), RSA_private_decrypt() functions for pairwise consistency tests [rhel-9.2.0.z]
2178039 - In FIPS mode, openssl should enter error state when DH PCT fails [rhel-9.2.0.z]
2178137 - In FIPS mode, openssl should always run the PBKDF2 lower bounds checks or provide an indicator when the pkcs5 parameter is set to 1 [rhel-9.2.0.z]
2179379 - In FIPS mode, openssl should indicate that RSA encryption and RSASVE are unapproved [rhel-9.2.0.z]
2181082 - CVE-2023-0464 openssl: Denial of service by excessive resource usage in verifying X509 policy constraints
2182561 - CVE-2023-0465 openssl: Invalid certificate policies in leaf certificates are silently ignored
2182565 - CVE-2023-0466 openssl: Certificate policy check not enabled
2188046 - Support requiring EMS in TLS 1.2, default to it when in FIPS mode [rhel-9.2.0.z]
2188052 - OpenSSL rsa_verify_recover doesn’t use the same key checks as rsa_verify in FIPS mode [rhel-9.2.0.z]
2188461 - CVE-2023-1255 openssl: Input buffer over-read in AES-XTS implementation on 64 bit ARM
2207947 - CVE-2023-2650 openssl: Possible DoS translating ASN.1 object identifiers

  1. Package List:

Red Hat Enterprise Linux AppStream (v. 9):

aarch64:
openssl-debuginfo-3.0.7-16.el9_2.aarch64.rpm
openssl-debugsource-3.0.7-16.el9_2.aarch64.rpm
openssl-devel-3.0.7-16.el9_2.aarch64.rpm
openssl-libs-debuginfo-3.0.7-16.el9_2.aarch64.rpm
openssl-perl-3.0.7-16.el9_2.aarch64.rpm

ppc64le:
openssl-debuginfo-3.0.7-16.el9_2.ppc64le.rpm
openssl-debugsource-3.0.7-16.el9_2.ppc64le.rpm
openssl-devel-3.0.7-16.el9_2.ppc64le.rpm
openssl-libs-debuginfo-3.0.7-16.el9_2.ppc64le.rpm
openssl-perl-3.0.7-16.el9_2.ppc64le.rpm

s390x:
openssl-debuginfo-3.0.7-16.el9_2.s390x.rpm
openssl-debugsource-3.0.7-16.el9_2.s390x.rpm
openssl-devel-3.0.7-16.el9_2.s390x.rpm
openssl-libs-debuginfo-3.0.7-16.el9_2.s390x.rpm
openssl-perl-3.0.7-16.el9_2.s390x.rpm

x86_64:
openssl-debuginfo-3.0.7-16.el9_2.i686.rpm
openssl-debuginfo-3.0.7-16.el9_2.x86_64.rpm
openssl-debugsource-3.0.7-16.el9_2.i686.rpm
openssl-debugsource-3.0.7-16.el9_2.x86_64.rpm
openssl-devel-3.0.7-16.el9_2.i686.rpm
openssl-devel-3.0.7-16.el9_2.x86_64.rpm
openssl-libs-debuginfo-3.0.7-16.el9_2.i686.rpm
openssl-libs-debuginfo-3.0.7-16.el9_2.x86_64.rpm
openssl-perl-3.0.7-16.el9_2.x86_64.rpm

Red Hat Enterprise Linux BaseOS (v. 9):

Source:
openssl-3.0.7-16.el9_2.src.rpm

aarch64:
openssl-3.0.7-16.el9_2.aarch64.rpm
openssl-debuginfo-3.0.7-16.el9_2.aarch64.rpm
openssl-debugsource-3.0.7-16.el9_2.aarch64.rpm
openssl-libs-3.0.7-16.el9_2.aarch64.rpm
openssl-libs-debuginfo-3.0.7-16.el9_2.aarch64.rpm

ppc64le:
openssl-3.0.7-16.el9_2.ppc64le.rpm
openssl-debuginfo-3.0.7-16.el9_2.ppc64le.rpm
openssl-debugsource-3.0.7-16.el9_2.ppc64le.rpm
openssl-libs-3.0.7-16.el9_2.ppc64le.rpm
openssl-libs-debuginfo-3.0.7-16.el9_2.ppc64le.rpm

s390x:
openssl-3.0.7-16.el9_2.s390x.rpm
openssl-debuginfo-3.0.7-16.el9_2.s390x.rpm
openssl-debugsource-3.0.7-16.el9_2.s390x.rpm
openssl-libs-3.0.7-16.el9_2.s390x.rpm
openssl-libs-debuginfo-3.0.7-16.el9_2.s390x.rpm

x86_64:
openssl-3.0.7-16.el9_2.x86_64.rpm
openssl-debuginfo-3.0.7-16.el9_2.i686.rpm
openssl-debuginfo-3.0.7-16.el9_2.x86_64.rpm
openssl-debugsource-3.0.7-16.el9_2.i686.rpm
openssl-debugsource-3.0.7-16.el9_2.x86_64.rpm
openssl-libs-3.0.7-16.el9_2.i686.rpm
openssl-libs-3.0.7-16.el9_2.x86_64.rpm
openssl-libs-debuginfo-3.0.7-16.el9_2.i686.rpm
openssl-libs-debuginfo-3.0.7-16.el9_2.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-2023-0464
https://access.redhat.com/security/cve/CVE-2023-0465
https://access.redhat.com/security/cve/CVE-2023-0466
https://access.redhat.com/security/cve/CVE-2023-1255
https://access.redhat.com/security/cve/CVE-2023-2650
https://access.redhat.com/security/updates/classification/#moderate

  1. Contact:

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

Copyright 2023 Red Hat, Inc.
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Ubuntu Security Notice 6119-1 - Matt Caswell discovered that OpenSSL incorrectly handled certain ASN.1 object identifiers. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, resulting in a denial of service. Anton Romanov discovered that OpenSSL incorrectly handled AES-XTS cipher decryption on 64-bit ARM platforms. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 22.10, and Ubuntu 23.04.

Ubuntu Security Notice USN-6119-1

Ubuntu Security Notice 6119-1 - Matt Caswell discovered that OpenSSL incorrectly handled certain ASN.1 object identifiers. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, resulting in a denial of service. Anton Romanov discovered that OpenSSL incorrectly handled AES-XTS cipher decryption on 64-bit ARM platforms. An attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 22.10, and Ubuntu 23.04.

CVE-2023-2650

Issue summary: Processing some specially crafted ASN.1 object identifiers or data containing them may be very slow. Impact summary: Applications that use OBJ_obj2txt() directly, or use any of the OpenSSL subsystems OCSP, PKCS7/SMIME, CMS, CMP/CRMF or TS with no message size limit may experience notable to very long delays when processing those messages, which may lead to a Denial of Service. An OBJECT IDENTIFIER is composed of a series of numbers - sub-identifiers - most of which have no size limit. OBJ_obj2txt() may be used to translate an ASN.1 OBJECT IDENTIFIER given in DER encoding form (using the OpenSSL type ASN1_OBJECT) to its canonical numeric text form, which are the sub-identifiers of the OBJECT IDENTIFIER in decimal form, separated by periods. When one of the sub-identifiers in the OBJECT IDENTIFIER is very large (these are sizes that are seen as absurdly large, taking up tens or hundreds of KiBs), the translation to a decimal number in text may take a very long time. T...

Ubuntu Security Notice USN-6039-1

Ubuntu Security Notice 6039-1 - It was discovered that OpenSSL was not properly managing file locks when processing policy constraints. If a user or automated system were tricked into processing a certificate chain with specially crafted policy constraints, a remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 22.10. David Benjamin discovered that OpenSSL was not properly performing the verification of X.509 certificate chains that include policy constraints, which could lead to excessive resource consumption. If a user or automated system were tricked into processing a specially crafted X.509 certificate chain that includes policy constraints, a remote attacker could possibly use this issue to cause a denial of service.

Ubuntu Security Notice USN-6039-1

Ubuntu Security Notice 6039-1 - It was discovered that OpenSSL was not properly managing file locks when processing policy constraints. If a user or automated system were tricked into processing a certificate chain with specially crafted policy constraints, a remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 22.10. David Benjamin discovered that OpenSSL was not properly performing the verification of X.509 certificate chains that include policy constraints, which could lead to excessive resource consumption. If a user or automated system were tricked into processing a specially crafted X.509 certificate chain that includes policy constraints, a remote attacker could possibly use this issue to cause a denial of service.

Ubuntu Security Notice USN-6039-1

Ubuntu Security Notice 6039-1 - It was discovered that OpenSSL was not properly managing file locks when processing policy constraints. If a user or automated system were tricked into processing a certificate chain with specially crafted policy constraints, a remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 22.10. David Benjamin discovered that OpenSSL was not properly performing the verification of X.509 certificate chains that include policy constraints, which could lead to excessive resource consumption. If a user or automated system were tricked into processing a specially crafted X.509 certificate chain that includes policy constraints, a remote attacker could possibly use this issue to cause a denial of service.

CVE-2023-1255

Issue summary: The AES-XTS cipher decryption implementation for 64 bit ARM platform contains a bug that could cause it to read past the input buffer, leading to a crash. Impact summary: Applications that use the AES-XTS algorithm on the 64 bit ARM platform can crash in rare circumstances. The AES-XTS algorithm is usually used for disk encryption. The AES-XTS cipher decryption implementation for 64 bit ARM platform will read past the end of the ciphertext buffer if the ciphertext size is 4 mod 5, e.g. 144 bytes or 1024 bytes. If the memory after the ciphertext buffer is unmapped, this will trigger a crash which results in a denial of service. If an attacker can control the size and location of the ciphertext buffer being decrypted by an application using AES-XTS on 64 bit ARM, the application is affected. This is fairly unlikely making this issue a Low severity one.

CVE-2023-0466

The function X509_VERIFY_PARAM_add0_policy() is documented to implicitly enable the certificate policy check when doing certificate verification. However the implementation of the function does not enable the check which allows certificates with invalid or incorrect policies to pass the certificate verification. As suddenly enabling the policy check could break existing deployments it was decided to keep the existing behavior of the X509_VERIFY_PARAM_add0_policy() function. Instead the applications that require OpenSSL to perform certificate policy check need to use X509_VERIFY_PARAM_set1_policies() or explicitly enable the policy check by calling X509_VERIFY_PARAM_set_flags() with the X509_V_FLAG_POLICY_CHECK flag argument. Certificate policy checks are disabled by default in OpenSSL and are not commonly used by applications.

CVE-2023-0465

Applications that use a non-default option when verifying certificates may be vulnerable to an attack from a malicious CA to circumvent certain checks. Invalid certificate policies in leaf certificates are silently ignored by OpenSSL and other certificate policy checks are skipped for that certificate. A malicious CA could use this to deliberately assert invalid certificate policies in order to circumvent policy checking on the certificate altogether. Policy processing is disabled by default but can be enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function.

CVE-2023-0464

A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function.

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