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CVE-2009-1086

Status Candidate

Overview

Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns 1.4.x allows remote attackers to cause a denial of service (memory corruption) and possibly execute arbitrary code via a DNS resource record (RR) with a long (1) class field (clas variable) and possibly (2) TTL field.

Related Files

Debian Linux Security Advisory 1795-1
Posted May 7, 2009
Authored by Debian | Site debian.org

Debian Security Advisory 1795 - Stefan Kaltenbrunner discovered that ldns, a library and set of utilities to facilitate DNS programming, did not correctly implement a buffer boundary check in its RR DNS record parser. This weakness could enable overflow of a heap buffer if a maliciously-crafted record is parsed, potentially allowing the execution of arbitrary code. The scope of compromise will vary with the context in which ldns is used, and could present either a local or remote attack vector.

tags | advisory, remote, overflow, arbitrary, local
systems | linux, debian
advisories | CVE-2009-1086
SHA-256 | 07bc2c872a94cc909bd0fc99b18912317c0adfa1ce9d83e608314726b9497ada
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