CVE-2017-7778 Amazon Linux Security Advisory for graphite2: ALAS-2017-872

Vulnerabilities in the Graphite 2 library (MFSA 2017-16)
A heap-based buffer overflow flaw related to "lz4::decompress" has been reported in graphite2. An attacker could exploit this issue to cause a crash or, possibly, execute arbitrary code. (CVE-2017-7778 )

Heap-buffer-overflow write "lz4::decompress" (src/Decompressor)
A heap-based buffer overflow flaw related to "lz4::decompress" (src/Decompressor) has been reported in graphite2. An attacker could exploit this issue to cause a crash or, possibly, execute arbitrary code. (CVE-2017-7772 )(CVE-2017-7773 )

Out of bounds read in "graphite2::Pass::readPass":
An out of bounds read flaw related to "graphite2::Pass::readPass" has been reported in graphite2. An attacker could possibly exploit this flaw to disclose potentially sensitive memory or cause an application crash. (CVE-2017-7771 )

Heap-buffer-overflow read "graphite2::Silf::getClassGlyph"
An out of bounds read flaw related to "graphite2::Silf::getClassGlyph" has been reported in graphite2. An attacker could possibly exploit this flaw to disclose potentially sensitive memory or cause an application crash.(CVE-2017-7776 )

Use of uninitialized memory "graphite2::GlyphCache::Loader::read_glyph":
The use of uninitialized memory related to "graphite2::GlyphCache::Loader::read_glyph" has been reported in graphite2. An attacker could possibly exploit this flaw to negatively impact the execution of an application using graphite2 in unknown ways. (CVE-2017-7777 )

Out of bounds read "graphite2::Silf::readGraphite"
An out of bounds read flaw related to "graphite2::Silf::readGraphite" has been reported in graphite2. An attacker could possibly exploit this flaw to disclose potentially sensitive memory or cause an application crash. (CVE-2017-7774 )

Assertion error "size() > n":
An assertion error has been reported in graphite2. An attacker could possibly exploit this flaw to cause an application crash. (CVE-2017-7775 )

QID Detection Logic:
This authenticated QID verifies if the version of the following files is lesser than 1.3.10-1.7.amzn1: graphite2-devel, graphite2-debuginfo, graphite2

Allows unauthorized disclosure of information; allows unauthorized modification; allows disruption of service.

Please refer to Amazon advisory ALAS-2017-872 for affected packages and patching details, or update with your package manager.

Patch:
Following are links for downloading patches to fix the vulnerabilities:

ALAS-2017-872: Amazon Linux (graphite2 (1.3.10-1.7.amzn1) on i686)

ALAS-2017-872: Amazon Linux (graphite2 (1.3.10-1.7.amzn1) on x86_64)

ALAS-2017-872: Amazon Linux (graphite2 (1.3.10-1.7.amzn1) on src)