Vulnerability in Apple OS X Server
CVE-2015-5477
named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service (REQUIRE assertion failure and daemon exit) via TKEY queries.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.994 (99.9th percentile), scored .
Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.913 · newest: 0.994 · change: +0.081
Affected products
- Apple OS X Server — versions 4.1.5
- HP Hp-Ux — versions 11.11, 11.23, 11.31
- HP Openvms — versions 5.7
- HPE DNS — versions 9.2.3, 9.3
- HPE Vcx
- Isc Bind — versions 9.10.2
- Juniper Junos — versions 12.1, 12.1r, 12.1x44
- NetApp Clustered Data Ontap
- Oracle Solaris — versions 10, 11.2
- Oracle Vm Server — versions 3.2
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Public proof-of-concept exploits
References
- packetstormsecurity.com/files/132926/BIND-TKEY-Query-Denial-Of-Service.html (VDB Entry, Third Party Advisory)
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html (Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00050.html (vendor-advisory, Mailing List, Third Party Advisory)
- h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay (Third Party Advisory)
- kb.juniper.net/JSA10783 (Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2015-1513.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00044.html (vendor-advisory, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20160114-0001/ (Third Party Advisory)
- kb.isc.org/article/AA-01438 (Broken Link)
- lists.fedoraproject.org/pipermail/package-announce/2015-August/163015.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-5477?
- CVE-2015-5477 is a high-severity vulnerability in Apple OS X Server, classified under CWE-19. CVSS score: 7.5/10. Published 2015-07-29.
- How severe is CVE-2015-5477?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2015-5477 known to be exploited?
- Yes. CVE-2015-5477 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-10-08), indicating it is being actively exploited. 34 public proof-of-concept repositories are indexed.