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CVE Record

CVE-2009-1755: Off-by-one error in the packet_read_query_section function in packet.c in nsd 3.2.1, and process_query_sect...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2009-1755 affects NSD, an authoritative DNS server. A malformed query could crash the service and may allow arbitrary code execution, though the public bundle does not specify the exact attack vector. For exposed DNS infrastructure, this is primarily an availability risk with possible compromise risk. Exposure is most likely on internet-facing authoritative DNS servers running NSD 3.2.1 or 2.3.7. The provided affected-product metadata is incomplete, so validate installed packages and vendor backports rather than relying only on upstream version strings. Prioritize remediation where NSD supports public DNS zones. A crash could disrupt name resolution, and possible code execution raises impact beyond availability, but the evidence bundle lacks CVSS, confirmed exploitation, and exact fixed-version details. Mitigation focus: Review NLnet Labs guidance for fixed NSD versions or recommended remediation.; Apply relevant Debian or vendor package updates for affected NSD deployments.; Prioritize externally reachable authoritative DNS servers before internal-only systems..

Prepared

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Potential ATT&CK relevance

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Execution behavior lookup

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CVE-2009-1755 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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