CVE-2013-2566

Summary

CVECVE-2013-2566
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2013-03-15 21:55:01 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.0 5.9 MEDIUM from [email protected]

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-326 | n/a


VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary5.9MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
2.0[email protected]Primary4.3AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:N/AC:M/Au:N/C:P/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 12.04 All All All
Operating System Canonical Ubuntu Linux 12.10 All All All
Operating System Canonical Ubuntu Linux 13.04 All All All
Operating System Canonical Ubuntu Linux 13.10 All All All
Hardware Fujitsu M10-1 - All All All
Operating System Fujitsu M10-1 Firmware All All All All
Hardware Fujitsu M10-4 - All All All
Hardware Fujitsu M10-4s - All All All
Operating System Fujitsu M10-4s Firmware All All All All
Operating System Fujitsu M10-4 Firmware All All All All
Hardware Fujitsu Sparc Enterprise M3000 - All All All
Operating System Fujitsu Sparc Enterprise M3000 Firmware All All All All
Hardware Fujitsu Sparc Enterprise M4000 - All All All
Operating System Fujitsu Sparc Enterprise M4000 Firmware All All All All
Hardware Fujitsu Sparc Enterprise M5000 - All All All
Operating System Fujitsu Sparc Enterprise M5000 Firmware All All All All
Hardware Fujitsu Sparc Enterprise M8000 - All All All
Operating System Fujitsu Sparc Enterprise M8000 Firmware All All All All
Hardware Fujitsu Sparc Enterprise M9000 - All All All
Operating System Fujitsu Sparc Enterprise M9000 Firmware All All All All
Application Mozilla Firefox All All All All
Application Oracle Communications Application Session Controller All All All All
Application Oracle Http Server 11.1.1.7.0 All All All
Application Oracle Http Server 11.1.1.9.0 All All All
Application Oracle Http Server 12.1.3.0.0 All All All
Application Oracle Http Server 12.2.1.1.0 All All All
Application Oracle Http Server 12.2.1.2.0 All All All
Operating System Oracle Integrated Lights Out Manager Firmware All All All All
Operating System Oracle Integrated Lights Out Manager Firmware All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Gentoo Security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
Opera for Mobile Devices af854a3a-2127-422b-91ae-364da2661108 www.opera.com Third Party Advisory
The Opera Security group - On the Precariousness of RC4 af854a3a-2127-422b-91ae-364da2661108 my.opera.com Third Party Advisory
Oracle Critical Patch Update - October 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
USN-2032-1: Thunderbird vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
SSL/TLS RC4 CVE-2013-2566 Information Disclosure Weakness af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
'[security bulletin] HPSBGN03324 rev.1 - HP Business Service Automation Essentials Core, Remote Discl' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info Issue Tracking, Third Party Advisory
cr.yp.to/talks/2013.03.12/slides.pdf af854a3a-2127-422b-91ae-364da2661108 cr.yp.to Third Party Advisory
A Few Thoughts on Cryptographic Engineering: Attack of the week: RC4 is kind of broken in TLS af854a3a-2127-422b-91ae-364da2661108 blog.cryptographyengineering.com Third Party Advisory
Gentoo Linux Documentation -- Mozilla Network Security Service: Multiple vulnerabilities af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
Oracle Critical Patch Update - July 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
Welcome - Opera Security Corner af854a3a-2127-422b-91ae-364da2661108 www.opera.com Third Party Advisory
MFSA 2013-103: Miscellaneous Network Security Services (NSS) vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.mozilla.org Third Party Advisory
Oracle Critical Patch Update - October 2017 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
Oracle Critical Patch Update - January 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
Oracle Critical Patch Update Advisory - April 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
On the Security of RC4 in TLS af854a3a-2127-422b-91ae-364da2661108 www.isg.rhul.ac.uk Third Party Advisory
Document Display | HPE Support Center af854a3a-2127-422b-91ae-364da2661108 h20566.www2.hpe.com Third Party Advisory
Juniper Networks - 2015-10 Security Bulletin: CTPView: Multiple Vulnerabilities in CTPView af854a3a-2127-422b-91ae-364da2661108 kb.juniper.net Third Party Advisory
USN-2031-1: Firefox vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
Document Display | HPE Support Center af854a3a-2127-422b-91ae-364da2661108 h20566.www2.hpe.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 591186 Mitsubishi Electric Air Conditioning Systems Multiple Vulnerabilities (ICSA-22-160-01)
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report