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Red Hat 7: RHSA-2016-1844-01 Important: libarchive DoS and Execution Issues

red hat
Calendar Grey September 12, 2016
Scroller Redhat
Critical libarchive enhancement for Red Hat Enterprise 7 introduces patches addressing vulnerabilities related to denial of service and potential code execution threats.
An update for libarchive 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

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.

Topics%20covered

Topics Covered

security advisory Red Hat code execution DoS important update libarchive execution flaws

References

https://access.redhat.com/security/cve/CVE-2015-8916 https://access.redhat.com/security/cve/CVE-2015-8917 https://access.redhat.com/security/cve/CVE-2015-8919 https://access.redhat.com/security/cve/CVE-2015-8920 https://access.redhat.com/security/cve/CVE-2015-8921 https://access.redhat.com/security/cve/CVE-2015-8922 https://access.redhat.com/security/cve/CVE-2015-8923 https://access.redhat.com/security/cve/CVE-2015-8924 https://access.redhat.com/security/cve/CVE-2015-8925 https://access.redhat.com/security/cve/CVE-2015-8926 https://access.redhat.com/security/cve/CVE-2015-8928 https://access.redhat.com/security/cve/CVE-2015-8930 https://access.redhat.com/security/cve/CVE-2015-8931 https://access.redhat.com/security/cve/CVE-2015-8932 https://access.redhat.com/security/cve/CVE-2015-8934 https://access.redhat.com/security/cve/CVE-2016-1541 https://access.redhat.com/security/cve/CVE-2016-4300 https://access.redhat.com/security/cve/CVE-2016-4302 https://access.redhat.com/security/cve/CVE-2016-4809 https://access.redhat.com/security/cve/CVE-2016-5418 https://access.redhat.com/security/cve/CVE-2016-5844 https://access.redhat.com/security/cve/CVE-2016-6250 https://access.redhat.com/security/cve/CVE-2016-7166 Read the Full Advisory

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: libarchive-3.1.2-10.el7_2.src.rpm
x86_64: libarchive-3.1.2-10.el7_2.i686.rpm libarchive-3.1.2-10.el7_2.x86_64.rpm libarchive-debuginfo-3.1.2-10.el7_2.i686.rpm libarchive-debuginfo-3.1.2-10.el7_2.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: bsdcpio-3.1.2-10.el7_2.x86_64.rpm bsdtar-3.1.2-10.el7_2.x86_64.rpm libarchive-debuginfo-3.1.2-10.el7_2.i686.rpm libarchive-debuginfo-3.1.2-10.el7_2.x86_64.rpm libarchive-devel-3.1.2-10.el7_2.i686.rpm libarchive-devel-3.1.2-10.el7_2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: libarchive-3.1.2-10.el7_2.src.rpm
x86_64: libarchive-3.1.2-10.el7_2.i686.rpm libarchive-3.1.2-10.el7_2.x86_64.rpm libarchive-debuginfo-3.1.2-10.el7_2.i686.rpm libarchive-debuginfo-3.1.2-10.el7_2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: bsdcpio-3.1.2-10.el7_2.x86_64.rpm bsdtar-3.1.2-10.el7_2.x86_64.rpm libarchive-debuginfo-3.1.2-10.el7_2.i686.rpm libarchive-debuginfo-3.1.2-10.el7_2.x86_64.rpm libarchive-devel-3.1.2-10.el7_2.i686.rpm libarchive-devel-3.1.2-10.el7_2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: libarchive-3.1.2-10.el7_2.src.rpm
ppc64: libarchive-3.1.2-10.el7_2.ppc.rpm libarchive-3.1.2-10.el7_2.ppc64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2016:1844-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:1844.html
Issue date: 2016-09-12

Topic

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 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 code execution DoS important update libarchive execution flaws

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

1334211 - CVE-2016-1541 libarchive: zip_read_mac_metadata() heap-based buffer overflow

1347084 - CVE-2016-4809 libarchive: Memory allocate error with symbolic links in cpio archives

1347085 - CVE-2016-6250 libarchive: Buffer overflow when writing large iso9660 containers1347086 - CVE-2016-7166 libarchive: Denial of service using a crafted gzip file

1348412 - CVE-2015-8916 libarchive: NULL pointer access in RAR parser through bsdtar

1348413 - CVE-2015-8917 libarchive: NULL pointer access in CAB parser

1348414 - CVE-2015-8919 libarchive: Heap out of bounds read in LHA/LZH parser

1348416 - CVE-2015-8920 libarchive: Stack out of bounds read in ar parser

1348419 - CVE-2015-8922 libarchive: NULL pointer access in 7z parser

1348421 - CVE-2015-8924 libarchive: Heap out of bounds read in TAR parser

1348423 - CVE-2015-8925 libarchive: Unclear invalid memory read in mtree parser

1348424 - CVE-2015-8926 libarchive: NULL pointer access in RAR parser

1348429 - CVE-2015-8928 libarchive: Heap out of bounds read in mtree parser

1348439 - CVE-2016-4300 libarchive: Heap buffer overflow vulnerability in the 7zip read_SubStreamsInfo

1348444 - CVE-2016-4302 libarchive: Heap buffer overflow in the Rar decompression functionality

1348772 - CVE-2015-8921 libarchive: Global out of bounds read in mtree parser

1348773 - CVE-2015-8923 libarchive: Unclear crashes in ZIP parser

Read the Full Advisory

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