Improper Input Validation The advisory has been revoked - it doesn't affect any version of package ntp (opens in a new tab)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-DEBIAN12-NTP-1555095
- published7 Aug 2017
- disclosed7 Aug 2017
Introduced: 7 Aug 2017
CVE-2015-7855 (opens in a new tab)Amendment
The Debian security team deemed this advisory irrelevant for Debian:12.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ntp package and not the ntp package as distributed by Debian.
The decodenetnum function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (assertion failure) via a 6 or mode 7 packet containing a long data value.
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
- https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11
- http://www.debian.org/security/2015/dsa-3388
- https://security-tracker.debian.org/tracker/CVE-2015-7855
- https://www.exploit-db.com/exploits/40840/
- https://security.gentoo.org/glsa/201607-15
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839
- http://support.ntp.org/bin/view/Main/NtpBug2922
- https://security.netapp.com/advisory/ntap-20171004-0001/
- https://bugzilla.redhat.com/show_bug.cgi?id=1274264
- http://www.securityfocus.com/bid/77283
- http://www.securitytracker.com/id/1033951
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2015-7855
- https://www.exploit-db.com/exploits/40840