CVE-2013-5661

Cache Poisoning issue exists in DNS Response Rate Limiting.

Published: 2019-11-05 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-5661 is rated Moderate Risk (49.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.06%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-5661

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 2.05% 1.06% -0.99%
2 2025-03-29 1.06% 2.05% +0.99%
3 2025-03-17 — 1.06% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-5661

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]
2.6 2.0 LOW
AV:N/AC:H/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 4.9 2.9 [email protected]

Weakness enumeration for CVE-2013-5661

OS Trackers for CVE-2013-5661

vendor priority summary link
redhat low — https://access.redhat.com/security/cve/CVE-2013-5661
ubuntu negligible CVE-2013-5661 negligible priority: Ubuntu including 1 source packages (bind9), 6 status rows across 6 suites (lucid, precise, quantal, raring, saucy, upstream): ignored 6. https://ubuntu.com/security/CVE-2013-5661

Affected software / configurations for CVE-2013-5661

Vendor Product Version Raw CPE
isc bind >= 9.8.0, <= 9.9.0 cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
nlnetlabs nsd 3.2.15 cpe:2.3:a:nlnetlabs:nsd:3.2.15:*:*:*:*:*:*:*
nic knot_resolver < 1.3.0 cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*
redhat enterprise_linux 6.0 cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
redhat enterprise_linux 7.0 cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

References for CVE-2013-5661

cvelogic Threat Intelligence