What’s Vulnerable › Vulnerabilities

CVE-2009-1755

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2009-05-22 · updated 2026-06-16
• Weakness: CWE-189

Description

Off-by-one error in the packet_read_query_section function in packet.c in nsd 3.2.1, and process_query_section in query.c in nsd 2.3.7, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors that trigger a buffer overflow.

Affected products

• NLnet Labs NSD: 2.0.0, 2.0.1, 2.0.2, 2.1.0, 2.1.1, 2.1.2 (+5)

References

• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=529418
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=529420
• http://www.nlnetlabs.nl/publications/NSD_vulnerability_announcement.html
• http://www.openwall.com/lists/oss-security/2009/05/19/1
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=529418
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=529420
• http://www.nlnetlabs.nl/publications/NSD_vulnerability_announcement.html
• http://www.openwall.com/lists/oss-security/2009/05/19/1

Get alerted when CVE-2009-1755 or the next vulnerability affects your stack