CVE-2013-4242

Summary

CVECVE-2013-4242
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2013-08-19 23:55:09 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionGnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows local users to obtain private RSA keys via a cache side-channel attack involving the L3 cache, aka Flush+Reload.

Risk And Classification

Primary CVSS: v2.0 1.9 from [email protected]

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

Problem Types: CWE-200 | n/a

CVSS v2.0 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 10.04 - lts All
Operating System Canonical Ubuntu Linux 12.04 - lts All
Operating System Canonical Ubuntu Linux 12.10 All All All
Operating System Canonical Ubuntu Linux 13.04 All All All
Operating System Debian Debian Linux 6.0 All All All
Operating System Debian Debian Linux 7.0 All All All
Application Gnupg Gnupg 0.0.0 - All All
Application Gnupg Gnupg 0.2.15 All All All
Application Gnupg Gnupg 0.2.16 All All All
Application Gnupg Gnupg 0.2.17 All All All
Application Gnupg Gnupg 0.2.18 All All All
Application Gnupg Gnupg 0.2.19 All All All
Application Gnupg Gnupg 0.3.0 All All All
Application Gnupg Gnupg 0.3.1 All All All
Application Gnupg Gnupg 0.3.2 All All All
Application Gnupg Gnupg 0.3.3 All All All
Application Gnupg Gnupg 0.3.4 All All All
Application Gnupg Gnupg 0.3.5 All All All
Application Gnupg Gnupg 0.4.0 All All All
Application Gnupg Gnupg 0.4.1 All All All
Application Gnupg Gnupg 0.4.3 All All All
Application Gnupg Gnupg 0.4.4 All All All
Application Gnupg Gnupg 0.4.5 All All All
Application Gnupg Gnupg 0.9.0 All All All
Application Gnupg Gnupg 0.9.1 All All All
Application Gnupg Gnupg 0.9.10 All All All
Application Gnupg Gnupg 0.9.11 All All All
Application Gnupg Gnupg 0.9.2 All All All
Application Gnupg Gnupg 0.9.3 All All All
Application Gnupg Gnupg 0.9.4 All All All
Application Gnupg Gnupg 0.9.5 All All All
Application Gnupg Gnupg 0.9.6 All All All
Application Gnupg Gnupg 0.9.7 All All All
Application Gnupg Gnupg 0.9.8 All All All
Application Gnupg Gnupg 0.9.9 All All All
Application Gnupg Gnupg 1.0.0 All All All
Application Gnupg Gnupg 1.0.1 All All All
Application Gnupg Gnupg 1.0.2 All All All
Application Gnupg Gnupg 1.0.3 All All All
Application Gnupg Gnupg 1.0.4 All All All
Application Gnupg Gnupg 1.0.4 - win32 All
Application Gnupg Gnupg 1.0.5 All All All
Application Gnupg Gnupg 1.0.5 - win32 All
Application Gnupg Gnupg 1.0.6 All All All
Application Gnupg Gnupg 1.0.7 All All All
Application Gnupg Gnupg 1.2.0 All All All
Application Gnupg Gnupg 1.2.1 All All All
Application Gnupg Gnupg 1.2.1 windows All All
Application Gnupg Gnupg 1.2.2 All All All
Application Gnupg Gnupg 1.2.3 All All All
Application Gnupg Gnupg 1.2.4 All All All
Application Gnupg Gnupg 1.2.5 All All All
Application Gnupg Gnupg 1.2.6 All All All
Application Gnupg Gnupg 1.2.7 All All All
Application Gnupg Gnupg 1.3.0 All All All
Application Gnupg Gnupg 1.3.1 All All All
Application Gnupg Gnupg 1.3.2 All All All
Application Gnupg Gnupg 1.3.3 All All All
Application Gnupg Gnupg 1.3.4 All All All
Application Gnupg Gnupg 1.3.6 All All All
Application Gnupg Gnupg 1.3.90 All All All
Application Gnupg Gnupg 1.3.91 All All All
Application Gnupg Gnupg 1.3.92 All All All
Application Gnupg Gnupg 1.3.93 All All All
Application Gnupg Gnupg 1.4.0 All All All
Application Gnupg Gnupg 1.4.10 All All All
Application Gnupg Gnupg 1.4.11 All All All
Application Gnupg Gnupg 1.4.12 All All All
Application Gnupg Gnupg 2.0.1 All All All
Application Gnupg Gnupg 2.0.10 All All All
Application Gnupg Gnupg 2.0.11 All All All
Application Gnupg Gnupg 2.0.12 All All All
Application Gnupg Gnupg 2.0.13 All All All
Application Gnupg Gnupg 2.0.14 All All All
Application Gnupg Gnupg 2.0.15 All All All
Application Gnupg Gnupg 2.0.16 All All All
Application Gnupg Gnupg 2.0.17 All All All
Application Gnupg Gnupg 2.0.18 All All All
Application Gnupg Gnupg 2.0.19 All All All
Application Gnupg Gnupg 2.0.3 All All All
Application Gnupg Gnupg 2.0.4 All All All
Application Gnupg Gnupg 2.0.5 All All All
Application Gnupg Gnupg 2.0.6 All All All
Application Gnupg Gnupg 2.0.7 All All All
Application Gnupg Gnupg 2.0.8 All All All
Application Gnupg Gnupg All All All All
Application Gnupg Libgcrypt 1.4.0 All All All
Application Gnupg Libgcrypt 1.4.3 All All All
Application Gnupg Libgcrypt 1.4.4 All All All
Application Gnupg Libgcrypt 1.4.5 All All All
Application Gnupg Libgcrypt 1.4.6 All All All
Application Gnupg Libgcrypt 1.5.0 All All All
Application Gnupg Libgcrypt 1.5.1 All All All
Application Gnupg Libgcrypt All All All All
Operating System Opensuse Opensuse 12.2 All All All
Operating System Opensuse Opensuse 12.3 All All All

Vendor Declared Affected Products

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

References

ReferenceSourceLinkTags
USN-1923-1: GnuPG, Libgcrypt vulnerability | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Vendor Advisory
#717880 - gnupg: CVE-2013-4242: Yarom/Falkner flush+reload side-channel attack on RSA secret keys - Debian Bug report logs af854a3a-2127-422b-91ae-364da2661108 bugs.debian.org
Debian -- Security Information -- DSA-2731-1 libgcrypt11 af854a3a-2127-422b-91ae-364da2661108 www.debian.org
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com
Security Advisory SA54375 - SUSE update for libgcrypt - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
Oracle VM Server for x86 Bulletin - July 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Debian -- Security Information -- DSA-2730-1 gnupg af854a3a-2127-422b-91ae-364da2661108 www.debian.org
Security Advisory SA54332 - Debian update for libgcrypt11 - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
[Announce] [security fix] GnuPG 1.4.14 released af854a3a-2127-422b-91ae-364da2661108 lists.gnupg.org
openSUSE-SU-2013:1294-1: moderate: libgcrypt: update to 1.5.3 af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Vendor Advisory
libgcrypt RSA Secret Keys Information Disclosure Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Juniper Networks - 2015-10 Security Bulletin: CTPView: Multiple Vulnerabilities in CTPView af854a3a-2127-422b-91ae-364da2661108 kb.juniper.net
Security Advisory SA54321 - Debian update for gnupg - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
Security Advisory SA54318 - Ubuntu update for gnupg and libgcrypt11 - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
Cryptology ePrint Archive: Report 2013/448 af854a3a-2127-422b-91ae-364da2661108 eprint.iacr.org
Vulnerability Note VU#976534 - L3 CPU shared cache architecture is susceptible to a Flush+Reload side-channel attack af854a3a-2127-422b-91ae-364da2661108 www.kb.cert.org US Government Resource
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© 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