Vulnerability identifier: #VU44546

Vulnerability risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2011-3581

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ldns
Other software / Other software solutions

Vendor: NLnet Labs

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns before 1.6.11. A remote attacker can use a Resource Record to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

ldns: 0.50 - 1.6.9

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External links
http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068091.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068201.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068239.html
http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00008.html
http://nlnetlabs.nl/svn/ldns/tags/release-1.6.11/Changelog
http://seclists.org/oss-sec/2011/q3/503
http://seclists.org/oss-sec/2011/q3/542
http://secunia.com/advisories/46470
http://secunia.com/advisories/46476
http://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=403
http://www.securityfocus.com/bid/49748

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.