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    CVE-2013-2566

    The RC4 algorithm, as used in the TLS protocol and SSL protocol, has many single-byte biases, which makes it easier for remote attackers to conduct plaintext-recovery attacks via statistical analysis of ciphertext in a large number of sessions that use the same plaintext.

    Published:Mar 14, 2013
    Last Modified:May 22, 2026
    EPS:Mar 14, 2013
    EPSS Score:0.90757
    CVSS Score:5.9

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Fujitsu
    Product
    M10-1
    Vendor
    Fujitsu
    Product
    M10-1 Firmware
    Vendor
    Fujitsu
    Product
    M10-4
    Vendor
    Fujitsu
    Product
    M10-4 Firmware
    Vendor
    Fujitsu
    Product
    M10-4s
    Vendor
    Fujitsu
    Product
    M10-4s Firmware
    Vendor
    Fujitsu
    Product
    Sparc Enterprise M3000
    Vendor
    Fujitsu
    Product
    Sparc Enterprise M3000 Firmware
    Vendor
    Fujitsu
    Product
    Sparc Enterprise M4000
    Vendor
    Fujitsu
    Product
    Sparc Enterprise M4000 Firmware
    Vendor
    Fujitsu
    Product
    Sparc Enterprise M5000
    Vendor
    Fujitsu
    Product
    Sparc Enterprise M5000 Firmware
    Vendor
    Fujitsu
    Product
    Sparc Enterprise M8000
    Vendor
    Fujitsu
    Product
    Sparc Enterprise M8000 Firmware
    Vendor
    Fujitsu
    Product
    Sparc Enterprise M9000
    Vendor
    Fujitsu
    Product
    Sparc Enterprise M9000 Firmware
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Seamonkey
    Vendor
    Mozilla
    Product
    Thunderbird
    Vendor
    Mozilla
    Product
    Thunderbird Esr
    Vendor
    Oracle
    Product
    Communications Application Session Controller
    Vendor
    Oracle
    Product
    Http Server
    Vendor
    Oracle
    Product
    Integrated Lights Out Manager Firmware

    Exploits

    No exploit reference

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    References

    http://blog.cryptographyengineering.com/2013/03/attack-of-week-rc4-is-kind-of-broken-in.html
    http://cr.yp.to/talks/2013.03.12/slides.pdf
    http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
    http://marc.info/?l=bugtraq&m=143039468003789&w=2
    http://my.opera.com/securitygroup/blog/2013/03/20/on-the-precariousness-of-rc4
    http://security.gentoo.org/glsa/glsa-201406-19.xml
    http://www.isg.rhul.ac.uk/tls/
    http://www.mozilla.org/security/announce/2013/mfsa2013-103.html
    http://www.opera.com/docs/changelogs/unified/1215/
    http://www.opera.com/security/advisory/1046
    http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
    http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
    http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
    http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
    http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
    http://www.securityfocus.com/bid/58796
    http://www.ubuntu.com/usn/USN-2031-1
    http://www.ubuntu.com/usn/USN-2032-1
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05289935
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05336888
    https://security.gentoo.org/glsa/201504-01
    http://blog.cryptographyengineering.com/2013/03/attack-of-week-rc4-is-kind-of-broken-in.html
    http://cr.yp.to/talks/2013.03.12/slides.pdf
    http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
    http://marc.info/?l=bugtraq&m=143039468003789&w=2
    http://my.opera.com/securitygroup/blog/2013/03/20/on-the-precariousness-of-rc4
    http://security.gentoo.org/glsa/glsa-201406-19.xml
    http://www.isg.rhul.ac.uk/tls/
    http://www.mozilla.org/security/announce/2013/mfsa2013-103.html
    http://www.opera.com/docs/changelogs/unified/1215/
    http://www.opera.com/security/advisory/1046
    http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
    http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
    http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
    http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
    http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
    http://www.securityfocus.com/bid/58796
    http://www.ubuntu.com/usn/USN-2031-1
    http://www.ubuntu.com/usn/USN-2032-1
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05289935
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05336888
    https://security.gentoo.org/glsa/201504-01

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High