CVE catalog

CVE-2009-1755

nsd: CVE-2009-1755

Severity: High
Published: May 20, 2009, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 3.16% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	nsd	sid	`4.15.4-1`	fixed
Debian	nsd	forky	`4.15.4-1`	fixed
Debian	nsd	trixie	`4.12.0-1`	fixed
Debian	nsd	bookworm	`4.6.1-1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	nsd	source	sid	`2.3.7-3`	medium	Not reported	[529420]
Debian	nsd	source	forky	`2.3.7-3`	medium	Not reported	[529420]
Debian	nsd	source	trixie	`2.3.7-3`	medium	Not reported	[529420]
Debian	nsd	source	bookworm	`2.3.7-3`	medium	Not reported	[529420]

[Debian bug #529420]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[nsd]Fixed
Details (2)
- 4.6.1-1 · amd64 · bookworm
  Fixed · Fixed: 2.3.7-3
  dsa · nsd · debian · bookworm; dsa · nsd · debian · 12
- 4.6.1-1 · arm64 · bookworm
  Fixed · Fixed: 2.3.7-3
  dsa · nsd · debian · bookworm; dsa · nsd · debian · 12

[Debian 13 (Trixie)]

[nsd]Fixed
Details (2)
- 4.12.0-1 · amd64 · trixie
  Fixed · Fixed: 2.3.7-3
  dsa · nsd · debian · 13
- 4.12.0-1 · arm64 · trixie
  Fixed · Fixed: 2.3.7-3
  dsa · nsd · debian · 13

Observed: Oct 23, 2026, 5:04:35 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]