[ GLSA 201203-23 ] libzip: Multiple vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: libzip: Multiple vulnerabilities (GLSA 201203-23)
Severity: normal
Exploitable: remote
Date: March 29, 2012
Bug(s): #409117
ID: 201203-23

Synopsis

Multiple vulnerabilities have been found in libzip, the worst of
which might allow execution of arbitrary code.


Background

libzip is a library for manipulating zip archives.

Affected Packages

Package: dev-libs/libzip
Vulnerable: < 0.10.1
Unaffected: >= 0.10.1
Architectures: All supported architectures


Description

Two vulnerabilities have been found in the "_zip_readcdir()" function in
zip_open.c of libzip:

• An incorrect loop construct, which could cause a heap-based buffer
  overflow (CVE-2012-1162).
  
• An integer overflow, which may not restrict operations within the
  memory buffer (CVE-2012-1163).
  

Impact

A remote attacker could entice a user to open a specially crafted ZIP
file, possibly resulting in execution of arbitrary code with the
privileges of the process, a Denial of Service condition, or information
leaks.


Workaround

There is no known workaround at this time.

Resolution

All libzip users should upgrade to the latest version: