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ldns: Arbitrary code execution

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201401-25 / ldns
Release Date January 21, 2014
Latest Revision January 21, 2014: 1
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-libs/ldns < 1.6.11 >= 1.6.11 All supported architectures

Related bugreports: #384249

Synopsis

A heap-based buffer overflow in ldns might allow remote attackers to execute arbitrary code or cause a Denial of Service condition.

2.  Impact Information

Background

ldns is a fast DNS library with the goal to simplify DNS programming and to allow developers to easily create software conforming to current RFCs and Internet drafts.

Description

ldns contains a heap-based buffer overflow in the ldns_rr_new_frm_str_internal function.

Impact

A remote attacker could execute arbitrary code or cause a Denial of Service condition with a crafted Resource Record.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All ldns users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-libs/ldns-1.6.11"

Packages which depend on this library may need to be recompiled. Tools such as revdep-rebuild may assist in identifying these packages.

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since October 11, 2011. It is likely that your system is already no longer affected by this issue.

4.  References



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Page updated January 21, 2014

Summary: This is a Gentoo Linux Security Advisory

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