Medium: unzip

Issue Overview:

A buffer overflow was found in the way unzip uncompressed certain extra fields of a file. A specially crafted Zip archive could cause unzip to crash or, possibly, execute arbitrary code when the archive was tested with unzip’s ‘-t’ option. (CVE-2014-9636)

A buffer overflow flaw was found in the way unzip computed the CRC32 checksum of certain extra fields of a file. A specially crafted Zip archive could cause unzip to crash when the archive was tested with unzip’s ‘-t’ option. (CVE-2014-8139)

An integer underflow flaw, leading to a buffer overflow, was found in the way unzip uncompressed certain extra fields of a file. A specially crafted Zip archive could cause unzip to crash when the archive was tested with unzip’s ‘-t’ option. (CVE-2014-8140)

A buffer overflow flaw was found in the way unzip handled Zip64 files. A specially crafted Zip archive could possibly cause unzip to crash when the archive was uncompressed. (CVE-2014-8141)

Affected Packages:

unzip

Issue Correction:
Run yum update unzip to update your system.

New Packages:

i686:  
    unzip-debuginfo-6.0-2.9.amzn1.i686  
    unzip-6.0-2.9.amzn1.i686  
  
src:  
    unzip-6.0-2.9.amzn1.src  
  
x86_64:  
    unzip-debuginfo-6.0-2.9.amzn1.x86_64  
    unzip-6.0-2.9.amzn1.x86_64  

Additional References

Red Hat: CVE-2014-8139, CVE-2014-8140, CVE-2014-8141, CVE-2014-9636

Mitre: CVE-2014-8139, CVE-2014-8140, CVE-2014-8141, CVE-2014-9636