MEDIUM
unbound: specially crafted request can lead to denial of service
Published Dec 11, 2014
4.3
MEDIUMCVSS 2.0
EPSS 25.20%
Description
iterator.c in NLnet Labs Unbound before 1.5.1 does not limit delegation chaining, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a large or infinite number of referrals.
Affected products
No data.
Configuration 2
OR
- 14.04
- 14.10
Configuration 3
- 7.0
No data.
Red Hat Enterprise Linux 7
unbound-0:1.4.20-26.el7
Fixed · RHSA-2015:2455
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | unbound-0:1.4.20-26.el7 | Fixed | RHSA-2015:2455 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
25.20% 0.25205
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.25205
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 25.20% (0.25205) | 97.88th | v5 (v2026.06.15) |
| Jun 15, 2026 | 25.20% (0.25205) | 97.65th | v5 (v2026.06.15) |
| Mar 9, 2026 | 7.56% (0.07560) | 91.68th | v4 (v2025.03.14) |
| Mar 19, 2025 | 10.50% (0.10503) | 92.29th | v4 (v2025.03.14) |
| Mar 17, 2025 | 16.39% (0.16394) | 94.36th | v4 (v2025.03.14) |
| Dec 17, 2024 | 30.08% (0.30080) | 96.93th | v3 (v2023.03.01) |
| Dec 9, 2024 | 53.60% (0.53596) | 97.73th | v3 (v2023.03.01) |
| Jul 23, 2024 | 59.00% (0.58998) | 97.79th | v3 (v2023.03.01) |
| Mar 7, 2023 | 65.15% (0.65146) | 97.28th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
Weaknesses (2)
References (12)
- http://cert.ssi.gouv.fr/site/CERTFR-2014-AVI-512/index.html x_refsource_MISCThird Party Advisory
- http://unbound.net/downloads/patch_cve_2014_8602.diff x_refsource_MISCPatch
- http://www.debian.org/security/2014/dsa-3097 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.kb.cert.org/vuls/id/264212 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/71589 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-2484-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2014-8602 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1172065 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2014-8602
- https://unbound.net/downloads/CVE-2014-8602.txt x_refsource_CONFIRMPatchVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2014-8602
| Link | Providers | Tags |
|---|---|---|
| http://cert.ssi.gouv.fr/site/CERTFR-2014-AVI-512/index.html | x_refsource_MISCThird Party Advisory | |
| http://unbound.net/downloads/patch_cve_2014_8602.diff | x_refsource_MISCPatch | |
| http://www.debian.org/security/2014/dsa-3097 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| http://www.kb.cert.org/vuls/id/264212 | third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource | |
| http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/71589 | vdb-entryx_refsource_BID | |
| http://www.ubuntu.com/usn/USN-2484-1 | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2014-8602 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1172065 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-8602 | ||
| https://unbound.net/downloads/CVE-2014-8602.txt | x_refsource_CONFIRMPatchVendor Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2014-8602 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 11, 2014
Updated Aug 6, 2024
Reserved Nov 4, 2014
Link CVE-2014-8602
CISA Vulnrichment
Updated n/a