Heap-based buffer overflow in the _zip_readcdir function in zip_open.c in libzip 0.10 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a zip archive with the number of directories set to 0, related to an "incorrect loop construct."

2 vulnerabilities were discovered for the libzip packages in openSUSE version 12.1.

The remote host is affected by the vulnerability described in GLSA-201203-23 (libzip: Multiple vulnerabilities)

    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.

Upstream changelog :

  - Fixed CVE-2012-1162

    - Fixed CVE-2012-1163

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

Multiple vulnerabilities has been found and corrected in libzip :

libzip (version <= 0.10) uses an incorrect loop construct, which can result in a heap overflow on corrupted zip files (CVE-2012-1162).

libzip (version <= 0.10) has a numeric overflow condition, which, for example, results in improper restrictions of operations within the bounds of a memory buffer (e.g., allowing information leaks) (CVE-2012-1163).

The updated packages have been upgraded to the 0.10.1 version to correct these issues.

ID	Name	Product	Family	Severity
74575	openSUSE Security Update : libzip (openSUSE-SU-2012:0416-1)	Nessus	SuSE Local Security Checks	high
59615	GLSA-201203-23 : libzip: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
58695	Fedora 17 : libzip-0.10.1-1.fc17 (2012-4485)	Nessus	Fedora Local Security Checks	high
58440	Mandriva Linux Security Advisory : libzip (MDVSA-2012:034)	Nessus	Mandriva Local Security Checks	high

Detections

Analytics

CVE-2012-1162

high

Tenable Plugins

high

high

high

high