LowCVE-2014-3566

    OpenSSL: security vulnerability (CVE-2014-3566)

    Published Sources: CVE.org, SUSE

    What is affected, what to do

    The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and other products, uses nondeterministic CBC padding, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, aka the "POODLE" issue.

    The available sources name no fixed version. Check the vendor guidance in the references below.

    Affected
    • Redhat Enterprise Linux eq 5..5
    • Redhat Enterprise Linux Desktop eq 6.0..6.0
    • Redhat Enterprise Linux Desktop eq 7.0..7.0
    • Red Hat Enterprise Linux Desktop Supplementary eq 5.0..5.0
    • Red Hat Enterprise Linux Desktop Supplementary eq 6.0..6.0
    • Redhat Enterprise Linux Server eq 6.0..6.0
    • Redhat Enterprise Linux Server eq 7.0..7.0
    • Red Hat Enterprise Linux Server Supplementary eq 5.0..5.0
    • Red Hat Enterprise Linux Server Supplementary eq 6.0..6.0
    • Red Hat Enterprise Linux Server Supplementary eq 7.0..7.0
    • Redhat Enterprise Linux Workstation eq 6.0..6.0
    • Redhat Enterprise Linux Workstation eq 7.0..7.0
    • Red Hat Enterprise Linux Workstation Supplementary eq 6.0..6.0
    • Red Hat Enterprise Linux Workstation Supplementary eq 7.0..7.0
    • IBM AIX eq 5.3..5.3
    • IBM AIX eq 6.1..6.1
    • IBM AIX eq 7.1..7.1
    • Apple Mac OS X lte *..10.10.1
    • Mageia eq 3.0..3.0
    • Mageia eq 4.0..4.0
    • Novell SUSE Linux Enterprise Desktop eq 9.0..9.0
    • Novell SUSE Linux Enterprise Desktop eq 10.0..10.0
    • Novell SUSE Linux Enterprise Desktop eq 11.0..11.0
    • Novell SUSE Linux Enterprise Desktop eq 12.0..12.0
    • Novell Suse Linux Enterprise Software Development Kit eq 11.0..11.0
    • Novell Suse Linux Enterprise Software Development Kit eq 12.0..12.0
    • Novell SUSE Linux Enterprise Server eq 11.0..11.0
    • Novell SUSE Linux Enterprise Server eq 12.0..12.0
    • OpenSUSE eq 12.3..12.3
    • OpenSUSE eq 13.1..13.1
    • Fedora eq 19..19
    • Fedora eq 20..20
    • Fedora eq 21..21
    • OpenSSL eq 0.9.8..0.9.8
    • OpenSSL eq 0.9.8a..0.9.8a
    • OpenSSL eq 0.9.8b..0.9.8b
    • OpenSSL eq 0.9.8c..0.9.8c
    • OpenSSL eq 0.9.8d..0.9.8d
    • OpenSSL eq 0.9.8e..0.9.8e
    • OpenSSL eq 0.9.8f..0.9.8f
    • OpenSSL eq 0.9.8g..0.9.8g
    • OpenSSL eq 0.9.8h..0.9.8h
    • OpenSSL eq 0.9.8i..0.9.8i
    • OpenSSL eq 0.9.8j..0.9.8j
    • OpenSSL eq 0.9.8k..0.9.8k
    • OpenSSL eq 0.9.8l..0.9.8l
    • OpenSSL eq 0.9.8m..0.9.8m
    • OpenSSL eq 0.9.8n..0.9.8n
    • OpenSSL eq 0.9.8o..0.9.8o
    • OpenSSL eq 0.9.8p..0.9.8p
    • OpenSSL eq 0.9.8q..0.9.8q
    • OpenSSL eq 0.9.8r..0.9.8r
    • OpenSSL eq 0.9.8s..0.9.8s
    • OpenSSL eq 0.9.8t..0.9.8t
    • OpenSSL eq 0.9.8u..0.9.8u
    • OpenSSL eq 0.9.8v..0.9.8v
    • OpenSSL eq 0.9.8w..0.9.8w
    • OpenSSL eq 0.9.8x..0.9.8x
    • OpenSSL eq 0.9.8y..0.9.8y
    • OpenSSL eq 0.9.8z..0.9.8z
    • OpenSSL eq 0.9.8za..0.9.8za
    • OpenSSL eq 0.9.8zb..0.9.8zb
    • OpenSSL eq 1.0.0..1.0.0
    • OpenSSL eq 1.0.0a..1.0.0a
    • OpenSSL eq 1.0.0b..1.0.0b
    • OpenSSL eq 1.0.0c..1.0.0c
    • OpenSSL eq 1.0.0d..1.0.0d
    • OpenSSL eq 1.0.0e..1.0.0e
    • OpenSSL eq 1.0.0f..1.0.0f
    • OpenSSL eq 1.0.0g..1.0.0g
    • OpenSSL eq 1.0.0h..1.0.0h
    • OpenSSL eq 1.0.0i..1.0.0i
    • OpenSSL eq 1.0.0j..1.0.0j
    • OpenSSL eq 1.0.0k..1.0.0k
    • OpenSSL eq 1.0.0l..1.0.0l
    • OpenSSL eq 1.0.0m..1.0.0m
    • OpenSSL eq 1.0.0n..1.0.0n
    • OpenSSL eq 1.0.1..1.0.1
    • OpenSSL eq 1.0.1a..1.0.1a
    • OpenSSL eq 1.0.1b..1.0.1b
    • OpenSSL eq 1.0.1c..1.0.1c
    • OpenSSL eq 1.0.1d..1.0.1d
    • OpenSSL eq 1.0.1e..1.0.1e
    • OpenSSL eq 1.0.1f..1.0.1f
    • OpenSSL eq 1.0.1g..1.0.1g
    • OpenSSL eq 1.0.1h..1.0.1h
    • OpenSSL eq 1.0.1i..1.0.1i
    • IBM VIOS eq 2.2.0.10..2.2.0.10
    • IBM VIOS eq 2.2.0.11..2.2.0.11
    • IBM VIOS eq 2.2.0.12..2.2.0.12
    • IBM VIOS eq 2.2.0.13..2.2.0.13
    • IBM VIOS eq 2.2.1.0..2.2.1.0
    • IBM VIOS eq 2.2.1.1..2.2.1.1
    • IBM VIOS eq 2.2.1.3..2.2.1.3
    • IBM VIOS eq 2.2.1.4..2.2.1.4
    • IBM VIOS eq 2.2.1.5..2.2.1.5
    • IBM VIOS eq 2.2.1.6..2.2.1.6
    • IBM VIOS eq 2.2.1.7..2.2.1.7
    • IBM VIOS eq 2.2.1.8..2.2.1.8
    • IBM VIOS eq 2.2.1.9..2.2.1.9
    • IBM VIOS eq 2.2.2.0..2.2.2.0
    • IBM VIOS eq 2.2.2.1..2.2.2.1
    • IBM VIOS eq 2.2.2.2..2.2.2.2
    • IBM VIOS eq 2.2.2.3..2.2.2.3
    • IBM VIOS eq 2.2.2.4..2.2.2.4
    • IBM VIOS eq 2.2.2.5..2.2.2.5
    • IBM VIOS eq 2.2.3.0..2.2.3.0
    • IBM VIOS eq 2.2.3.1..2.2.3.1
    • IBM VIOS eq 2.2.3.2..2.2.3.2
    • IBM VIOS eq 2.2.3.3..2.2.3.3
    • IBM VIOS eq 2.2.3.4..2.2.3.4
    • NetBSD eq 5.1..5.1
    • NetBSD eq 5.1.1..5.1.1
    • NetBSD eq 5.1.2..5.1.2
    • NetBSD eq 5.1.3..5.1.3
    • NetBSD eq 5.1.4..5.1.4
    • NetBSD eq 5.2..5.2
    • NetBSD eq 5.2.1..5.2.1
    • NetBSD eq 5.2.2..5.2.2
    • NetBSD eq 6.0..6.0
    • NetBSD eq 6.0.1..6.0.1
    • NetBSD eq 6.0.2..6.0.2
    • NetBSD eq 6.0.3..6.0.3
    • NetBSD eq 6.0.4..6.0.4
    • NetBSD eq 6.0.5..6.0.5
    • NetBSD eq 6.0.6..6.0.6
    • NetBSD eq 6.1..6.1
    • NetBSD eq 6.1.1..6.1.1
    • NetBSD eq 6.1.2..6.1.2
    • NetBSD eq 6.1.3..6.1.3
    • NetBSD eq 6.1.4..6.1.4
    • NetBSD eq 6.1.5..6.1.5
    • Debian Linux eq 7.0..7.0
    • Debian Linux eq 8.0..8.0
    • Oracle Database eq 11.2.0.4..11.2.0.4
    • Oracle Database eq 12.1.0.2..12.1.0.2

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    3.4

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: NVD, CVSS v3

    3.4

    CVSS v3

    Severity Low on the scale from 0 to 10.

    Source: CVE.org, SUSE

    —

    EPSS score

    No value is available for this vulnerability.

    Show all metrics
    Severity
    Low
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    97.00 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    3.4 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    3.4
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published
    CISA assessment (SSVC)
    Exploitation: none known · not automatable · Technical impact: partial
    Source: CISA Vulnrichment, as of 28 May 2026
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-329

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and other products, uses nondeterministic CBC padding, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, aka the "POODLE" issue.

    Source: NVD (NIST), suse_csaf, cvelistv5

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    ibmvios
    • 2.2.3.3
    • 2.2.1.9
    • 2.2.0.13
    • 2.2.1.1
    • 2.2.3.1
    • 2.2.2.5
    • 2.2.1.3
    • 2.2.0.10
    • 2.2.2.4
    • 2.2.1.0
    • 2.2.1.8
    • 2.2.0.12
    • 2.2.1.5
    • 2.2.1.4
    • 2.2.2.1
    • 2.2.0.11
    • 2.2.2.2
    • 2.2.3.4
    • 2.2.2.0
    • 2.2.3.0
    • 2.2.1.6
    • 2.2.1.7
    • 2.2.3.2
    • 2.2.2.3
    • —
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    • —
    • —
    • —
    • —
    novellsuse_linux_enterprise_software_development_kit
    • 12.0
    • 11.0
    • —
    • —
    opensslopenssl
    • 0.9.8w
    • 0.9.8y
    • 0.9.8x
    • 1.0.1d
    • 1.0.0j
    • 1.0.1
    • 0.9.8m
    • 1.0.0n
    • 1.0.1h
    • 1.0.0l
    • 1.0.0d
    • 1.0.0
    • 1.0.0b
    • 1.0.0c
    • 0.9.8za
    • 1.0.0f
    • 0.9.8n
    • 0.9.8c
    • 1.0.0k
    • 0.9.8j
    • 0.9.8p
    • 0.9.8v
    • —
    • —
    • —
    • —
    • —
    • —
    • —
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    Vendors and products

    Affected operating systems

    Affected operating systems
    BSDnetbsdnetbsd5.1
    BSDnetbsdnetbsd5.1.1
    BSDnetbsdnetbsd5.1.2
    BSDnetbsdnetbsd5.1.3
    BSDnetbsdnetbsd5.1.4
    BSDnetbsdnetbsd5.2
    BSDnetbsdnetbsd5.2.1
    BSDnetbsdnetbsd5.2.2
    BSDnetbsdnetbsd6.0
    BSDnetbsdnetbsd6.0.1
    BSDnetbsdnetbsd6.0.2
    BSDnetbsdnetbsd6.0.3
    BSDnetbsdnetbsd6.0.4
    BSDnetbsdnetbsd6.0.5
    BSDnetbsdnetbsd6.0.6
    BSDnetbsdnetbsd6.1
    BSDnetbsdnetbsd6.1.1
    BSDnetbsdnetbsd6.1.2
    BSDnetbsdnetbsd6.1.3
    BSDnetbsdnetbsd6.1.4
    BSDnetbsdnetbsd6.1.5
    Linuxdebiandebian_linux7.0
    Linuxdebiandebian_linux8.0
    Linuxredhatenterprise_linux5

    Weakness classes (CWE)

    • CWE-329Generation of Predictable IV with CBC Mode

      Variant

      The product generates and uses a predictable initialization Vector (IV) with Cipher Block Chaining (CBC) Mode, which causes algorithms to be susceptible to dictionary attacks when they are encrypted under the same key.

      Entry at MITRE CWE-329

    References & sources

    • marc.infoHPSBOV03227Vendor advisory, x_refsource_HP, Third-party advisory
    • aix.software.ibm.comaix/efixes/security/openssl_advisory11.ascx_refsource_CONFIRM, Third-party advisory
    • securitytracker.com1031090Vulnerability database, x_refsource_SECTRACK, Third-party advisory, Vulnerability database
    • blog.nodejs.org2014/10/23/node-v0-10-33-stablex_refsource_CONFIRM, Third-party advisory
    • rhn.redhat.comRHSA-2014:1880Vendor advisory, x_refsource_REDHAT, Third-party advisory
    • marc.infoHPSBHF03300Vendor advisory, x_refsource_HP, Third-party advisory
    • h20566.www2.hpe.comportal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04819635x_refsource_CONFIRM, Third-party advisory
    • kb.cert.orgVU#577193Third-party advisory, x_refsource_CERT-VN, Third-party advisory, US government resource
    • marc.infoHPSBMU03184Vendor advisory, x_refsource_HP, Third-party advisory
    • marc.infoHPSBGN03209Vendor advisory, x_refsource_HP, Third-party advisory
    • lists.opensuse.orgopenSUSE-SU-2014:1331Vendor advisory, x_refsource_SUSE, Third-party advisory
    • support.apple.comkb/HT6542x_refsource_CONFIRM, Vendor advisory
    • securitytracker.com1031106Vulnerability database, x_refsource_SECTRACK, Third-party advisory, Vulnerability database
    • marc.infoHPSBGN03201Vendor advisory, x_refsource_HP, Third-party advisory
    • oracle.comtechnetwork/topics/security/cpujul2015-2367936.htmlx_refsource_CONFIRM, Third-party advisory
    • marc.info[openssl-dev] 20141014 Patch to mitigate CVE-2014-3566 ("POODLE")Mailing list, x_refsource_MLIST, Third-party advisory
    • marc.infoSSRT101898Vendor advisory, x_refsource_HP, Third-party advisory
    • marc.infoSSRT101896Vendor advisory, x_refsource_HP, Third-party advisory
    • secunia.com60056Third-party advisory, x_refsource_SECUNIA, Third-party advisory
    • rhn.redhat.comRHSA-2014:1877Vendor advisory, x_refsource_REDHAT, Third-party advisory
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