RHSA-2017:1793 – Security Advisory

Synopsis

Important: graphite2 security update

Type/Severity

Security Advisory: Important

Topic

An update for graphite2 is now available for Red Hat Enterprise Linux 7.

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.

Description

Graphite2 is a project within SIL’s Non-Roman Script Initiative and Language Software Development groups to provide rendering capabilities for complex non-Roman writing systems. Graphite can be used to create “smart fonts” capable of displaying writing systems with various complex behaviors. With respect to the Text Encoding Model, Graphite handles the “Rendering” aspect of writing system implementation.

The following packages have been upgraded to a newer upstream version: graphite2 (1.3.10).

Security Fix(es):

  • Various vulnerabilities have been discovered in Graphite2. An attacker able to trick an unsuspecting user into opening specially crafted font files in an application using Graphite2 could exploit these flaws to disclose potentially sensitive memory, cause an application crash, or, possibly, execute arbitrary code. (CVE-2017-7771, CVE-2017-7772, CVE-2017-7773, CVE-2017-7774, CVE-2017-7775, CVE-2017-7776, CVE-2017-7777, CVE-2017-7778)

Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Holger Fuhrmannek and Tyson Smith as the original reporters of these issues.

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

Affected Products

  • Red Hat Enterprise Linux Server 7 x86_64
  • Red Hat Enterprise Linux Server – Extended Update Support 7.3 x86_64
  • Red Hat Enterprise Linux Server – AUS 7.3 x86_64
  • Red Hat Enterprise Linux Workstation 7 x86_64
  • Red Hat Enterprise Linux Desktop 7 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 7 s390x
  • Red Hat Enterprise Linux for IBM z Systems – Extended Update Support 7.3 s390x
  • Red Hat Enterprise Linux for Power, big endian 7 ppc64
  • Red Hat Enterprise Linux for Power, big endian – Extended Update Support 7.3 ppc64
  • Red Hat Enterprise Linux for Scientific Computing 7 x86_64
  • Red Hat Enterprise Linux EUS Compute Node 7.3 x86_64
  • Red Hat Enterprise Linux for Power, little endian 7 ppc64le
  • Red Hat Enterprise Linux for Power, little endian – Extended Update Support 7.3 ppc64le
  • Red Hat Enterprise Linux Server for ARM 7 aarch64
  • Red Hat Enterprise Linux Server – TUS 7.3 x86_64

Fixes

  • BZ – 1461260 – CVE-2017-7778 Mozilla: Vulnerabilities in the Graphite 2 library (MFSA 2017-16)
  • BZ – 1472212 – CVE-2017-7771 graphite2: out of bounds read in “graphite2::Pass::readPass”
  • BZ – 1472213 – CVE-2017-7772 graphite2: heap-buffer-overflow write “lz4::decompress” (CVE-2017-7772)
  • BZ – 1472215 – CVE-2017-7773 graphite2: heap-buffer-overflow write “lz4::decompress” (src/Decompressor)
  • BZ – 1472219 – CVE-2017-7774 graphite2: out of bounds read “graphite2::Silf::readGraphite”
  • BZ – 1472221 – CVE-2017-7775 graphite2: assertion error “size() > n”
  • BZ – 1472223 – CVE-2017-7776 graphite2: heap-buffer-overflow read “graphite2::Silf::getClassGlyph”
  • BZ – 1472225 – CVE-2017-7777 graphite2: use of uninitialized memory “graphite2::GlyphCache::Loader::read_glyph”

CVEs

References

RHSA-2017:1793 – Security Advisory

Source: RHSA-2017:1793 – Security Advisory – Red Hat Customer Portal

RHSA-2017:1789 – Security Advisory

Synopsis

Critical: java-1.8.0-openjdk security update

Type/Severity

Security Advisory: Critical

Topic

An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7.

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

Description

The java-1.8.0-openjdk packages provide the OpenJDK 8 Java Runtime Environment and the OpenJDK 8 Java Software Development Kit.

Security Fix(es):

  • It was discovered that the DCG implementation in the RMI component of OpenJDK failed to correctly handle references. A remote attacker could possibly use this flaw to execute arbitrary code with the privileges of RMI registry or a Java RMI application. (CVE-2017-10102)
  • Multiple flaws were discovered in the RMI, JAXP, ImageIO, Libraries, AWT, Hotspot, and Security components in OpenJDK. An untrusted Java application or applet could use these flaws to completely bypass Java sandbox restrictions. (CVE-2017-10107, CVE-2017-10096, CVE-2017-10101, CVE-2017-10089, CVE-2017-10090, CVE-2017-10087, CVE-2017-10111, CVE-2017-10110, CVE-2017-10074, CVE-2017-10067)
  • It was discovered that the LDAPCertStore class in the Security component of OpenJDK followed LDAP referrals to arbitrary URLs. A specially crafted LDAP referral URL could cause LDAPCertStore to communicate with non-LDAP servers. (CVE-2017-10116)
  • It was discovered that the Nashorn JavaScript engine in the Scripting component of OpenJDK could allow scripts to access Java APIs even when access to Java APIs was disabled. An untrusted JavaScript executed by Nashorn could use this flaw to bypass intended restrictions. (CVE-2017-10078)
  • It was discovered that the Security component of OpenJDK could fail to properly enforce restrictions defined for processing of X.509 certificate chains. A remote attacker could possibly use this flaw to make Java accept certificate using one of the disabled algorithms. (CVE-2017-10198)
  • A covert timing channel flaw was found in the DSA implementation in the JCE component of OpenJDK. A remote attacker able to make a Java application generate DSA signatures on demand could possibly use this flaw to extract certain information about the used key via a timing side channel. (CVE-2017-10115)
  • A covert timing channel flaw was found in the PKCS#8 implementation in the JCE component of OpenJDK. A remote attacker able to make a Java application repeatedly compare PKCS#8 key against an attacker controlled value could possibly use this flaw to determine the key via a timing side channel. (CVE-2017-10135)
  • It was discovered that the BasicAttribute and CodeSource classes in OpenJDK did not limit the amount of memory allocated when creating object instances from a serialized form. A specially crafted serialized input stream could cause Java to consume an excessive amount of memory. (CVE-2017-10108, CVE-2017-10109)
  • Multiple flaws were found in the Hotspot and Security components in OpenJDK. An untrusted Java application or applet could use these flaws to bypass certain Java sandbox restrictions. (CVE-2017-10081, CVE-2017-10193)
  • It was discovered that the JPEGImageReader implementation in the 2D component of OpenJDK would, in certain cases, read all image data even if it was not used later. A specially crafted image could cause a Java application to temporarily use an excessive amount of CPU and memory. (CVE-2017-10053)

Note: If the web browser plug-in provided by the icedtea-web package was installed, the issues exposed via Java applets could have been exploited without user interaction if a user visited a malicious website.

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

All running instances of OpenJDK Java must be restarted for this update to take effect.

Affected Products

  • Red Hat Enterprise Linux Server 7 x86_64
  • Red Hat Enterprise Linux Server 6 x86_64
  • Red Hat Enterprise Linux Server 6 i386
  • Red Hat Enterprise Linux Server – Extended Update Support 7.3 x86_64
  • Red Hat Enterprise Linux Workstation 6 x86_64
  • Red Hat Enterprise Linux Workstation 6 i386
  • Red Hat Enterprise Linux Desktop 7 x86_64
  • Red Hat Enterprise Linux Desktop 6 x86_64
  • Red Hat Enterprise Linux Desktop 6 i386
  • Red Hat Enterprise Linux for IBM z Systems 7 s390x
  • Red Hat Enterprise Linux for IBM z Systems – Extended Update Support 7.3 s390x
  • Red Hat Enterprise Linux for Power, big endian 7 ppc64
  • Red Hat Enterprise Linux for Power, big endian – Extended Update Support 7.3 ppc64
  • Red Hat Enterprise Linux for Scientific Computing 7 x86_64
  • Red Hat Enterprise Linux for Scientific Computing 6 x86_64
  • Red Hat Enterprise Linux EUS Compute Node 7.3 x86_64
  • Red Hat Enterprise Linux Server – AUS 7.3 x86_64
  • Red Hat Enterprise Linux Workstation 7 x86_64
  • Red Hat Enterprise Linux for Power, little endian 7 ppc64le
  • Red Hat Enterprise Linux for Power, little endian – Extended Update Support 7.3 ppc64le
  • Red Hat Enterprise Linux Server for ARM 7 aarch64
  • Red Hat Enterprise Linux Server – TUS 7.3 x86_64

Fixes

  • BZ – 1471266 – CVE-2017-10107 OpenJDK: insufficient access control checks in ActivationID (RMI, 8173697)
  • BZ – 1471270 – CVE-2017-10089 OpenJDK: insufficient access control checks in ServiceRegistry (ImageIO, 8172461)
  • BZ – 1471517 – CVE-2017-10090 OpenJDK: insufficient access control checks in AsynchronousChannelGroupImpl (8172465, Libraries)
  • BZ – 1471521 – CVE-2017-10087 OpenJDK: insufficient access control checks in ThreadPoolExecutor (Libraries, 8172204)
  • BZ – 1471523 – CVE-2017-10110 OpenJDK: insufficient access control checks in ImageWatched (AWT, 8174098)
  • BZ – 1471526 – CVE-2017-10111 OpenJDK: incorrect range checks in LambdaFormEditor (Libraries, 8184185)
  • BZ – 1471527 – CVE-2017-10101 OpenJDK: unrestricted access to com.sun.org.apache.xml.internal.resolver (JAXP, 8173286)
  • BZ – 1471528 – CVE-2017-10096 OpenJDK: insufficient access control checks in XML transformations (JAXP, 8172469)
  • BZ – 1471534 – CVE-2017-10074 OpenJDK: integer overflows in range check loop predicates (Hotspot, 8173770)
  • BZ – 1471535 – CVE-2017-10067 OpenJDK: JAR verifier incorrect handling of missing digest (Security, 8169392)
  • BZ – 1471670 – CVE-2017-10109 OpenJDK: unbounded memory allocation in CodeSource deserialization (Serialization, 8174113)
  • BZ – 1471711 – CVE-2017-10081 OpenJDK: incorrect bracket processing in function signature handling (Hotspot, 8170966)
  • BZ – 1471715 – CVE-2017-10193 OpenJDK: incorrect key size constraint check (Security, 8179101)
  • BZ – 1471738 – CVE-2017-10116 OpenJDK: LDAPCertStore following referrals to non-LDAP URLs (Security, 8176067)
  • BZ – 1471851 – CVE-2017-10115 OpenJDK: DSA implementation timing attack (JCE, 8175106)
  • BZ – 1471871 – CVE-2017-10135 OpenJDK: PKCS#8 implementation timing attack (JCE, 8176760)
  • BZ – 1471888 – CVE-2017-10108 OpenJDK: unbounded memory allocation in BasicAttribute deserialization (Serialization, 8174105)
  • BZ – 1471889 – CVE-2017-10053 OpenJDK: reading of unprocessed image data in JPEGImageReader (2D, 8169209)
  • BZ – 1471898 – CVE-2017-10078 OpenJDK: Nashorn incompletely blocking access to Java APIs (Scripting, 8171539)
  • BZ – 1472320 – CVE-2017-10198 OpenJDK: incorrect enforcement of certificate path restrictions (Security, 8179998)
  • BZ – 1472345 – CVE-2017-10102 OpenJDK: incorrect handling of references in DGC (RMI, 8163958)

CVEs

References

RHSA-2017:1789 – Security Advisory

Source: RHSA-2017:1789 – Security Advisory – Red Hat Customer Portal