PT-2011-3478 · Nlnet · Unbound

Christopher Olah · Published 2011-05-31 · Updated 2017-08-17 · CVE-2011-1922

Positive Technologies (AI Summary)

CVSS v2.0

4.3

Medium

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions Unbound versions 1.x through 1.4.9

Description The issue allows remote attackers to cause a denial of service via a crafted DNS request, triggering improper error handling and resulting in an assertion failure and daemon exit. This occurs when debugging functionality and the interface-automatic option are enabled.

Recommendations For Unbound versions 1.x through 1.4.9, update to version 1.4.10 or later to resolve the issue. As a temporary workaround, consider disabling the debugging functionality and interface-automatic option until a patch is available.

Fix

DoS

Weakness Enumeration

CWE-399

Related Identifiers

CVE-2011-1922

Affected Products

Unbound

References · 11

• http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061243.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2011-1922 · Vendor Advisory
• http://kb.cert.org/vuls/id/531342 · Patch
• https://security-tracker.debian.org/tracker/CVE-2011-1922 · Vendor Advisory
• http://unbound.nlnetlabs.nl/downloads/CVE-2011-1922.txt · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2011-1922 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-1922 · Security Note
• http://osvdb.org/72750 · Note
• http://securityfocus.com/bid/47986 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/67645 · Note
• http://secunia.com/advisories/44865 · Note