CVE-2019-6443

unknown

Published — · Modified —

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

1.0

Description

An issue was discovered in NTPsec before 1.1.3. Because of a bug in ctl_getitem, there is a stack-based buffer over-read in read_sysvars in ntp_control.c in ntpd.

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.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-46175 dos linux verified

Magnus Klaaborg Stubman · 2019-01-16

NTPsec 1.1.2 - 'ctl_getitem' Out-of-Bounds Read (PoC)

Source code queued for fetch — refresh in a moment.

OS impact

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`1.1.3+dfsg1-1`
sid	Fixed	`1.1.3+dfsg1-1`
forky	Fixed	`1.1.3+dfsg1-1`
bullseye	Fixed	`1.1.3+dfsg1-1`
bookworm	Fixed	`1.1.3+dfsg1-1`

References

https://security-tracker.debian.org/tracker/CVE-2019-6443

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

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