EulerOS 2.0 SP1 : libarchive (EulerOS-SA-2016-1045)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote EulerOS host is missing multiple security updates.

Description :

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.

See also :

http://www.nessus.org/u?12db4627

Solution :

Update the affected libarchive packages.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.9
(CVSS2#E:POC/RL:OF/RC:ND)
Public Exploit Available : true