CVE-2015-7853
critical
CVSS v3
9.8
CVSS v4 NEW
—
VIR risk
9.8
Description
The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative input value.
Predictions
Exploit likelihood
97%
Patch ETA
—
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 withsource_tier=community-verified.
OS impact
Debian Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| bullseye | Fixed | 1:4.2.8p4+dfsg-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| ntp | ntp | {"startIncluding":"4.2.0","endExcluding":"4.2.8"} | 4.2.8 |
| ntp | ntp | 4.2.8 | |
| netapp | oncommand_balance | - | |
| netapp | oncommand_performance_manager | - | |
| netapp | oncommand_unified_manager | - | |
References
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
- http://lists.opensuse.org/opensuse-updates/2015-11/msg00093.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html
- http://packetstormsecurity.com/files/134082/FreeBSD-Security-Advisory-ntp-Authentication-Bypass.html
- http://packetstormsecurity.com/files/134137/Slackware-Security-Advisory-ntp-Updates.html
- http://support.ntp.org/bin/view/Main/NtpBug2920
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151021-ntp
- http://www.securityfocus.com/archive/1/536737/100/0/threaded
- http://www.securityfocus.com/archive/1/536760/100/0/threaded
- http://www.securityfocus.com/archive/1/536796/100/0/threaded
- http://www.securityfocus.com/archive/1/536833/100/0/threaded
- http://www.securityfocus.com/archive/1/archive/1/536737/100/100/threaded
- http://www.securityfocus.com/archive/1/archive/1/536760/100/100/threaded
- http://www.securityfocus.com/archive/1/archive/1/536796/100/100/threaded
- http://www.securityfocus.com/archive/1/archive/1/536833/100/100/threaded
- http://www.securityfocus.com/bid/77273
- http://www.securitytracker.com/id/1033951
- http://www.talosintel.com/vulnerability-reports/
- http://www.ubuntu.com/usn/USN-2783-1
- https://bto.bluecoat.com/security-advisory/sa103
- https://bugzilla.redhat.com/show_bug.cgi?id=1274262
- https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
CWEs
CWE-120
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.