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Red Hat 7 RHSA-2016:0594-01 Important: Graphite2 Buffer Overflow Risk

red hat
Calendar Grey April 5, 2016
Scroller Redhat
Crucial patch for graphite2 within Red Hat Enterprise Linux boosts defense against vulnerabilities.
An update for graphite2 is now available for Red Hat Enterprise Linux 7

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

Summary

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 (1.3.6).
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 cause the application to crash or, potentially, execute arbitrary code with the privileges of the application. (CVE-2016-1521, CVE-2016-1522, CVE-2016-1523, CVE-2016-1526)

Topics%20covered

Topics Covered

security advisory Red Hat buffer overflow important application crash exploit risk graphite2

References

https://access.redhat.com/security/cve/CVE-2016-1521 https://access.redhat.com/security/cve/CVE-2016-1522 https://access.redhat.com/security/cve/CVE-2016-1523 https://access.redhat.com/security/cve/CVE-2016-1526 https://access.redhat.com/security/updates/classification#important https://raw.githubusercontent.com/silnrsi/graphite/master/ChangeLog

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: graphite2-1.3.6-1.el7_2.src.rpm
x86_64: graphite2-1.3.6-1.el7_2.i686.rpm graphite2-1.3.6-1.el7_2.x86_64.rpm graphite2-debuginfo-1.3.6-1.el7_2.i686.rpm graphite2-debuginfo-1.3.6-1.el7_2.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: graphite2-debuginfo-1.3.6-1.el7_2.i686.rpm graphite2-debuginfo-1.3.6-1.el7_2.x86_64.rpm graphite2-devel-1.3.6-1.el7_2.i686.rpm graphite2-devel-1.3.6-1.el7_2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: graphite2-1.3.6-1.el7_2.src.rpm
x86_64: graphite2-1.3.6-1.el7_2.i686.rpm graphite2-1.3.6-1.el7_2.x86_64.rpm graphite2-debuginfo-1.3.6-1.el7_2.i686.rpm graphite2-debuginfo-1.3.6-1.el7_2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: graphite2-debuginfo-1.3.6-1.el7_2.i686.rpm graphite2-debuginfo-1.3.6-1.el7_2.x86_64.rpm graphite2-devel-1.3.6-1.el7_2.i686.rpm graphite2-devel-1.3.6-1.el7_2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: graphite2-1.3.6-1.el7_2.src.rpm
ppc64: graphite2-1.3.6-1.el7_2.ppc.rpm graphite2-1.3.6-1.el7_2.ppc64.rpm graphite2-debuginfo-1.3.6-1.el7_2.ppc.rpm graphite2-debuginfo-1.3.6-1.el7_2.ppc64.rpm
ppc64le: graphite2-1.3.6-1.el7_2.ppc64le.rpm graphite2-debuginfo-1.3.6-1.el7_2.ppc64le.rpm
s390x:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2016:0594-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:0594.html
Issue date: 2016-04-05

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 impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat buffer overflow important application crash exploit risk graphite2

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1305805 - CVE-2016-1521 graphite2: Out-of-bound read vulnerability triggered by crafted fonts

1305810 - CVE-2016-1522 graphite2: Null pointer dereference and out-of-bounds access vulnerabilities

1305813 - CVE-2016-1523 graphite2: Heap-based buffer overflow in context item handling functionality

1308590 - CVE-2016-1526 graphite2: Out-of-bounds read vulnerability in TfUtil:LocaLookup

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