The default BKS keystore use an HMAC that is only 16 bits long, which can allow an attacker to compromise the integrity of a BKS keystore. Bouncy Castle release 1.47 changes the BKS format to a format which uses a 160 bit HMAC instead. This applies to any BKS keystore generated prior to BC 1.47. For situations where people need to create the files for legacy reasons a specific keystore type "BKS-V1" was introduced in 1.49. It should be noted that the use of "BKS-V1" is discouraged by the library authors and should only be used where it is otherwise safe to do so, as in where the use of a 16 bit checksum for the file integrity check is not going to cause a security issue in itself.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - The default BKS keystore use an HMAC that is only 16 bits long, which can allow an attacker to compromise
    the integrity of a BKS keystore. Bouncy Castle release 1.47 changes the BKS format to a format which uses
    a 160 bit HMAC instead. This applies to any BKS keystore generated prior to BC 1.47. For situations where
    people need to create the files for legacy reasons a specific keystore type "BKS-V1" was introduced in
    1.49. It should be noted that the use of "BKS-V1" is discouraged by the library authors and should only be
    used where it is otherwise safe to do so, as in where the use of a 16 bit checksum for the file integrity
    check is not going to cause a security issue in itself. (CVE-2018-5382)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:2927 advisory.

    Red Hat Satellite is a systems management tool for Linux-based infrastructure.
    It allows for provisioning, remote management, and monitoring of multiple Linux deployments with a single     centralized tool.

    Security Fix(es):

    * jackson-databind: Unsafe deserialization due to incomplete black list (incomplete fix for CVE-2017-7525)     (CVE-2017-15095)

    * hornetq: XXE/SSRF in XPath selector (CVE-2015-3208)

    * bouncycastle: Information disclosure in GCMBlockCipher (CVE-2015-6644)

    * bouncycastle: DSA does not fully validate ASN.1 encoding during signature verification allowing for     injection of unsigned data (CVE-2016-1000338)

    * bouncycastle: Information leak in AESFastEngine class (CVE-2016-1000339)

    * bouncycastle: Information exposure in DSA signature generation via timing attack (CVE-2016-1000341)

    * bouncycastle: ECDSA improper validation of ASN.1 encoding of signature (CVE-2016-1000342)

    * bouncycastle: DHIES implementation allowed the use of ECB mode (CVE-2016-1000344)

    * bouncycastle: DHIES/ECIES CBC modes are vulnerable to padding oracle attack (CVE-2016-1000345)

    * bouncycastle: Other party DH public keys are not fully validated (CVE-2016-1000346)

    * bouncycastle: ECIES implementation allowed the use of ECB mode (CVE-2016-1000352)

    * logback: Serialization vulnerability in SocketServer and ServerSocketReceiver (CVE-2017-5929)

    * python-django: Open redirect and possible XSS attack via user-supplied numeric redirect URLs     (CVE-2017-7233)

    * hibernate-validator: Privilege escalation when running under the security manager (CVE-2017-7536)

    * puppet: Environment leakage in puppet-agent (CVE-2017-10690)

    * Satellite 6: XSS in discovery rule filter autocomplete functionality (CVE-2017-12175)

    * foreman: Stored XSS in fact name or value (CVE-2017-15100)

    * pulp: sensitive credentials revealed through the API (CVE-2018-1090)

    * foreman: SQL injection due to improper handling of the widget id parameter (CVE-2018-1096)

    * foreman: Ovirt admin password exposed by foreman API (CVE-2018-1097)

    * django: Catastrophic backtracking in regular expressions via 'urlize' and 'urlizetrunc' (CVE-2018-7536)

    * django: Catastrophic backtracking in regular expressions via 'truncatechars_html' and     'truncatewords_html' (CVE-2018-7537)

    * guava: Unbounded memory allocation in AtomicDoubleArray and CompoundOrdering classes allow remote     attackers to cause a denial of service (CVE-2018-10237)

    * bouncycastle: Carry propagation bug in math.raw.Nat??? class (CVE-2016-1000340)

    * bouncycastle: DSA key pair generator generates a weak private key by default (CVE-2016-1000343)

    * puppet: Unpacking of tarballs in tar/mini.rb can create files with insecure permissions (CVE-2017-10689)

    * bouncycastle: BKS-V1 keystore files vulnerable to trivial hash collisions (CVE-2018-5382)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

    Red Hat would like to thank Liao Xinxi (NSFOCUS) for reporting CVE-2017-15095; and the Django project for     reporting CVE-2017-7233, CVE-2018-7536, and CVE-2018-7537. The CVE-2017-7536 issue was discovered by     Gunnar Morling (Red Hat); and the CVE-2018-1096 issue was discovered by Martin Povolny (Red Hat). Red Hat     would also like to thank David Jorm (IIX Product Security) for reporting CVE-2015-3208.

    Additional Changes:

    This update also fixes several bugs and adds various enhancements. Documentation for these changes is     available from the Release Notes document linked to in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
412411	SCA: security update for org.bouncycastle:bcprov-jdk15on (GHSA-8477-3v39-ggpm)	Tenable Cloud Security	SCA Checks	medium
412411	SCA: security update for org.bouncycastle:bcprov-jdk15on (GHSA-8477-3v39-ggpm)	Tenable Self-Hosted Container Security	SCA Checks	medium
118185	RHEL 7 : Satellite 6.4 (RHSA-2018:2927)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2018-5382

medium

Tenable Plugins

medium

medium

high