Not ratedCVE-2015-5262

    Apache HttpComponents Client: Denial of Service (CVE-2015-5262)

    Published Sources: BSI, CVE.org, OSV

    What is affected, what to do

    http/conn/ssl/SSLConnectionSocketFactory.java in Apache HttpComponents HttpClient before 4.3.6 ignores the http.socket.timeout configuration setting during an SSL handshake, which allows remote attackers to cause a denial of service (HTTPS call hang) via unspecified vectors.

    Update NetWorker AUTHC to version 19.14, NetWorker File-Level Recovery to version 19.14, NetWorker Management Console to version 19.14.

    Affected
    • Canonical Ubuntu Linux eq 12.04..12.04
    • Canonical Ubuntu Linux eq 14.04..14.04
    • Canonical Ubuntu Linux eq 15.04..15.04
    • Fedora eq 21..21
    • Fedora eq 22..22
    • Fedora eq 23..23
    • Apache HttpComponents Client lte 4.3..4.3.5

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

    Metrics

    —

    Priority

    No value is available for this vulnerability.

    —

    CVSS v3

    No value is available for this vulnerability.

    18.8 %

    EPSS score

    Elevated — model estimates 10-50% exploitation likelihood.

    Source: FIRST EPSS, percentile 97.3

    Show all metrics
    Severity
    Not rated
    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
    75.69 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
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    18.8 %
    Elevated — model estimates 10-50% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    97.3
    Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
    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

    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

    http/conn/ssl/SSLConnectionSocketFactory.java in Apache HttpComponents HttpClient before 4.3.6 ignores the http.socket.timeout configuration setting during an SSL handshake, which allows remote attackers to cause a denial of service (HTTPS call hang) via unspecified vectors.

    Source: BSI CSAF, BSI WID Portal, NVD (NIST), OSV (Open Source Vulnerabilities), 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
    apachehttpclient
    • 4.3 – ≤ 4.3.5
    • —
    DellNetWorker AUTHC
    • < 19.14
    • 19.14
    DellNetWorker File-Level Recovery
    • < 19.14
    • 19.14
    DellNetWorker Management Console
    • < 19.14
    • 19.14
    DellNetWorker Management Web UI
    • < 19.14
    • 19.14
    DellNetWorker REST API
    • < 19.14
    • 19.14
    DellNetWorker vCenter User Interface
    • < 19.14
    • 19.14
    mavenorg.apache.httpcomponents:httpclient
    • 4.1.1
    • 4.1-alpha1
    • 4.0-alpha2
    • 4.1.2
    • 4.1
    • 4.0-beta1
    • 4.0.2
    • 4.1-beta1
    • 4.2-alpha1
    • 4.2.5
    • 4.3-alpha1
    • 4.2.2
    • 4.3.4
    • 4.0
    • 4.0-beta2
    • 4.0-alpha1
    • 4.3.2
    • 4.3.1
    • 4.1.3
    • 4.1-alpha2
    • 4.3.5
    • 4.3.3
    • 4.2.4
    • 4.0-alpha3
    • 4.2
    • 4.3-beta2
    • 4.3-beta1
    • 4.2.6
    • 4.0-alpha4
    • 4.3
    • 4.2-beta1
    • 4.0.1
    • 4.0.3
    • 4.2.3
    • 4.2.1
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    Vendors and products

    Affected operating systems

    Affected operating systems
    Linuxcanonicalubuntu_linux12.04
    Linuxcanonicalubuntu_linux14.04
    Linuxcanonicalubuntu_linux15.04
    Otherfedoraprojectfedora21
    Otherfedoraprojectfedora22
    Otherfedoraprojectfedora23

    References & sources

    • NVD (NIST)vuln/detail/CVE-2015-5262advisory
    • bugzilla.redhat.comshow_bug.cgi?id=1261538web, x_refsource_CONFIRM, Issue tracking, Third-party advisory
    • GitHub Security Advisoriesadvisories/GHSA-fmj5-wv96-r2chadvisory
    • issues.apache.orgjira/browse/HTTPCLIENT-1478web, x_refsource_CONFIRM, Vendor advisory
    • jenkins.iosecurity/advisory/2018-02-26web
    • lists.apache.org[drill-dev] 20191021 [jira] [Created] (DRILL-7416) Updates required to dependencies to resolve potential security vulnerabilitiesweb, Mailing list, x_refsource_MLIST
    • lists.apache.orgthread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b…web
    • lists.apache.org[drill-dev] 20191017 Dependencies used by Drill contain known vulnerabilitiesweb, Mailing list, x_refsource_MLIST
    • lists.apache.orgthread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0…web
    • lists.apache.org[drill-issues] 20191021 [jira] [Created] (DRILL-7416) Updates required to dependencies to resolve potential security vulnerabilitiesweb, Mailing list, x_refsource_MLIST
    • lists.apache.orgthread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798…web
    • lists.fedoraproject.orgFEDORA-2015-15590web, Vendor advisory, x_refsource_FEDORA, Third-party advisory
    • lists.fedoraproject.orgFEDORA-2015-15589web, Vendor advisory, x_refsource_FEDORA, Third-party advisory
    • lists.fedoraproject.orgFEDORA-2015-15588web, Vendor advisory, x_refsource_FEDORA, Third-party advisory
    • lists.opensuse.orgopenSUSE-SU-2020:1873web, Vendor advisory, x_refsource_SUSE
    • lists.opensuse.orgopenSUSE-SU-2020:1875web, Vendor advisory, x_refsource_SUSE
    • svn.apache.orgviewvc?view=revision&revision=1626784web, x_refsource_CONFIRM, Vendor advisory
    • oracle.comtechnetwork/security-advisory/cpujul2018-4258247.htmlweb, x_refsource_CONFIRM
    • securitytracker.com1033743web, Vulnerability database, x_refsource_SECTRACK, Third-party advisory, Vulnerability database
    • ubuntu.comUSN-2769-1web, Vendor advisory, x_refsource_UBUNTU, Third-party advisory
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