Security Fix(es) :

  - A flaw was found in the way libarchive handled hardlink     archive entries of non-zero size. Combined with flaws in     libarchive's file system sandboxing, this issue could     cause an application using libarchive to overwrite     arbitrary files with arbitrary data from the archive.
    (CVE-2016-5418)

  - Multiple out-of-bounds write flaws were found in     libarchive. Specially crafted ZIP, 7ZIP, or RAR files     could cause a heap overflow, potentially allowing code     execution in the context of the application using     libarchive. (CVE-2016-1541, CVE-2016-4300,     CVE-2016-4302)

  - Multiple out-of-bounds read flaws were found in     libarchive. Specially crafted LZA/LZH, AR, MTREE, ZIP,     TAR, or RAR files could cause the application to read     data out of bounds, potentially disclosing a small     amount of application memory, or causing an application     crash. (CVE-2015-8919, CVE-2015-8920, CVE-2015-8921,     CVE-2015-8923, CVE-2015-8924, CVE-2015-8925,     CVE-2015-8926, CVE-2015-8928, CVE-2015-8934)

  - Multiple NULL pointer dereference flaws were found in     libarchive. Specially crafted RAR, CAB, or 7ZIP files     could cause an application using libarchive to crash.
    (CVE-2015-8916, CVE-2015-8917, CVE-2015-8922)

  - Multiple infinite loop / resource exhaustion flaws were     found in libarchive. Specially crafted GZIP or ISO files     could cause the application to consume an excessive     amount of resources, eventually leading to a crash on     memory exhaustion. (CVE-2016-7166, CVE-2015-8930)

  - A denial of service vulnerability was found in     libarchive. A specially crafted CPIO archive containing     a symbolic link to a large target path could cause     memory allocation to fail, causing an application using     libarchive that attempted to view or extract such     archive to crash. (CVE-2016-4809)

  - An integer overflow flaw, leading to a buffer overflow,     was found in libarchive's construction of ISO9660     volumes. Attempting to create an ISO9660 volume with 2     GB or 4 GB file names could cause the application to     attempt to allocate 20 GB of memory. If this were to     succeed, it could lead to an out of bounds write on the     heap and potential code execution. (CVE-2016-6250)

  - Multiple instances of undefined behavior due to     arithmetic overflow were found in libarchive. Specially     crafted MTREE archives, Compress streams, or ISO9660     volumes could potentially cause the application to fail     to read the archive, or to crash. (CVE-2015-8931,     CVE-2015-8932, CVE-2016-5844)

According to the versions of the libarchive package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the way libarchive handled hardlink     archive entries of non-zero size. Combined with flaws     in libarchive's file system sandboxing, this issue     could cause an application using libarchive to     overwrite arbitrary files with arbitrary data from the     archive. (CVE-2016-5418)

  - Multiple out-of-bounds write flaws were found in     libarchive.

  - Specially crafted ZIP, 7ZIP, or RAR files could cause a     heap overflow, potentially allowing code execution in     the context of the application using libarchive.
    (CVE-2016-1541, CVE-2016-4300, CVE-2016-4302)

  - Multiple out-of-bounds read flaws were found in     libarchive.

  - Specially crafted LZA/LZH, AR, MTREE, ZIP, TAR, or RAR     files could cause the application to read data out of     bounds, potentially disclosing a small amount of     application memory, or causing an application crash.
    (CVE-2015-8919, CVE-2015-8920, CVE-2015-8921,     CVE-2015-8923, CVE-2015-8924, CVE-2015-8925,     CVE-2015-8926, CVE-2015-8928, CVE-2015-8934)

  - Multiple NULL pointer dereference flaws were found in     libarchive.

  - Specially crafted RAR, CAB, or 7ZIP files could cause     an application using libarchive to crash.
    (CVE-2015-8916, CVE-2015-8917, CVE-2015-8922)

  - Multiple infinite loop / resource exhaustion flaws were     found in libarchive. Specially crafted GZIP or ISO     files could cause the application to consume an     excessive amount of resources, eventually leading to a     crash on memory exhaustion. (CVE-2016-7166,     CVE-2015-8930)

  - A denial of service vulnerability was found in     libarchive. A specially crafted CPIO archive containing     a symbolic link to a large target path could cause     memory allocation to fail, causing an application using     libarchive that attempted to view or extract such     archive to crash. (CVE-2016-4809)

  - An integer overflow flaw, leading to a buffer overflow,     was found in libarchive's construction of ISO9660     volumes. Attempting to create an ISO9660 volume with 2     GB or 4 GB file names could cause the application to     attempt to allocate 20 GB of memory. If this were to     succeed, it could lead to an out of bounds write on the     heap and potential code execution. (CVE-2016-6250)

  - Multiple instances of undefined behavior due to     arithmetic overflow were found in libarchive. Specially     crafted MTREE archives, Compress streams, or ISO9660     volumes could potentially cause the application to fail     to read the archive, or to crash. (CVE-2015-8931,     CVE-2015-8932, CVE-2016-5844)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update for libarchive 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.

The libarchive programming library can create and read several different streaming archive formats, including GNU tar, cpio, and ISO 9660 CD-ROM images. Libarchive is used notably in the bsdtar utility, scripting language bindings such as python-libarchive, and several popular desktop file managers.

Security Fix(es) :

* A flaw was found in the way libarchive handled hardlink archive entries of non-zero size. Combined with flaws in libarchive's file system sandboxing, this issue could cause an application using libarchive to overwrite arbitrary files with arbitrary data from the archive. (CVE-2016-5418)

* Multiple out-of-bounds write flaws were found in libarchive.
Specially crafted ZIP, 7ZIP, or RAR files could cause a heap overflow, potentially allowing code execution in the context of the application using libarchive. (CVE-2016-1541, CVE-2016-4300, CVE-2016-4302)

* Multiple out-of-bounds read flaws were found in libarchive.
Specially crafted LZA/LZH, AR, MTREE, ZIP, TAR, or RAR files could cause the application to read data out of bounds, potentially disclosing a small amount of application memory, or causing an application crash. (CVE-2015-8919, CVE-2015-8920, CVE-2015-8921, CVE-2015-8923, CVE-2015-8924, CVE-2015-8925, CVE-2015-8926, CVE-2015-8928, CVE-2015-8934)

* Multiple NULL pointer dereference flaws were found in libarchive.
Specially crafted RAR, CAB, or 7ZIP files could cause an application using libarchive to crash. (CVE-2015-8916, CVE-2015-8917, CVE-2015-8922)

* Multiple infinite loop / resource exhaustion flaws were found in libarchive. Specially crafted GZIP or ISO files could cause the application to consume an excessive amount of resources, eventually leading to a crash on memory exhaustion. (CVE-2016-7166, CVE-2015-8930)

* A denial of service vulnerability was found in libarchive. A specially crafted CPIO archive containing a symbolic link to a large target path could cause memory allocation to fail, causing an application using libarchive that attempted to view or extract such archive to crash. (CVE-2016-4809)

* An integer overflow flaw, leading to a buffer overflow, was found in libarchive's construction of ISO9660 volumes. Attempting to create an ISO9660 volume with 2 GB or 4 GB file names could cause the application to attempt to allocate 20 GB of memory. If this were to succeed, it could lead to an out of bounds write on the heap and potential code execution. (CVE-2016-6250)

* Multiple instances of undefined behavior due to arithmetic overflow were found in libarchive. Specially crafted MTREE archives, Compress streams, or ISO9660 volumes could potentially cause the application to fail to read the archive, or to crash. (CVE-2015-8931, CVE-2015-8932, CVE-2016-5844)

Red Hat would like to thank Insomnia Security for reporting CVE-2016-5418.

Hanno Boeck and Marcin Noga discovered multiple vulnerabilities in libarchive; processing malformed archives may result in denial of service or the execution of arbitrary code.

ID	Name	Product	Family	Published	Updated	Severity
93454	Scientific Linux Security Update : libarchive on SL7.x x86_64 (20160912)	Nessus	Scientific Linux Local Security Checks	9/13/2016	1/26/2026	high
99808	EulerOS 2.0 SP1 : libarchive (EulerOS-SA-2016-1045)	Nessus	Huawei Local Security Checks	5/1/2017	12/22/2025	high
93450	RHEL 7 : libarchive (RHSA-2016:1844)	Nessus	Red Hat Local Security Checks	9/13/2016	1/26/2026	high
93238	Debian DSA-3657-1 : libarchive - security update	Nessus	Debian Local Security Checks	8/31/2016	1/27/2026	high

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