CVE-2014-0239

medium

Published 2014-05-28 · Modified 2026-05-06

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

5.0

Description

The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`2:4.1.8+dfsg-1`
debian	bullseye	fixed	`2:4.1.8+dfsg-1`
debian	forky	fixed	`2:4.1.8+dfsg-1`
debian	sid	fixed	`2:4.1.8+dfsg-1`
debian	trixie	fixed	`2:4.1.8+dfsg-1`

Application impact

Vendor	Product	Versions	Fixed
samba	samba	`{"startIncluding":"4.0.0","endExcluding":"4.0.18"}`	`4.0.18`

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.