Vulnerability Monitor

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CVE-2013-4242

GnuPG 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.

Security Impact Summary

CVE-2013-4242 is a security vulnerability that . Impacting 5 products from canonical, from debian, from gnupg and 2 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2013, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2013-08-19T23:55:09.010

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 1.9 (LOW)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

3.4

Impact Score

2.9

Weaknesses

Type: Primary
CWE-200

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	canonical	ubuntu_linux	10.04	Yes
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	12.10	Yes
Operating System	canonical	ubuntu_linux	13.04	Yes
Operating System	debian	debian_linux	6.0	Yes
Operating System	debian	debian_linux	7.0	Yes
Application	gnupg	gnupg	≤ 1.4.13	Yes
Application	gnupg	gnupg	0.0.0	Yes
Application	gnupg	gnupg	0.2.15	Yes
Application	gnupg	gnupg	0.2.16	Yes
Application	gnupg	gnupg	0.2.17	Yes
Application	gnupg	gnupg	0.2.18	Yes
Application	gnupg	gnupg	0.2.19	Yes
Application	gnupg	gnupg	0.3.0	Yes
Application	gnupg	gnupg	0.3.1	Yes
Application	gnupg	gnupg	0.3.2	Yes
Application	gnupg	gnupg	0.3.3	Yes
Application	gnupg	gnupg	0.3.4	Yes
Application	gnupg	gnupg	0.3.5	Yes
Application	gnupg	gnupg	0.4.0	Yes
Application	gnupg	gnupg	0.4.1	Yes
Application	gnupg	gnupg	0.4.3	Yes
Application	gnupg	gnupg	0.4.4	Yes
Application	gnupg	gnupg	0.4.5	Yes
Application	gnupg	gnupg	0.9.0	Yes
Application	gnupg	gnupg	0.9.1	Yes
Application	gnupg	gnupg	0.9.2	Yes
Application	gnupg	gnupg	0.9.3	Yes
Application	gnupg	gnupg	0.9.4	Yes
Application	gnupg	gnupg	0.9.5	Yes
Application	gnupg	gnupg	0.9.6	Yes
Application	gnupg	gnupg	0.9.7	Yes
Application	gnupg	gnupg	0.9.8	Yes
Application	gnupg	gnupg	0.9.9	Yes
Application	gnupg	gnupg	0.9.10	Yes
Application	gnupg	gnupg	0.9.11	Yes
Application	gnupg	gnupg	1.0.0	Yes
Application	gnupg	gnupg	1.0.1	Yes
Application	gnupg	gnupg	1.0.2	Yes
Application	gnupg	gnupg	1.0.3	Yes
Application	gnupg	gnupg	1.0.4	Yes
Application	gnupg	gnupg	1.0.4	Yes
Application	gnupg	gnupg	1.0.5	Yes
Application	gnupg	gnupg	1.0.5	Yes
Application	gnupg	gnupg	1.0.6	Yes
Application	gnupg	gnupg	1.0.7	Yes
Application	gnupg	gnupg	1.2.0	Yes
Application	gnupg	gnupg	1.2.1	Yes
Application	gnupg	gnupg	1.2.1	Yes
Application	gnupg	gnupg	1.2.2	Yes
Application	gnupg	gnupg	1.2.3	Yes
Application	gnupg	gnupg	1.2.4	Yes
Application	gnupg	gnupg	1.2.5	Yes
Application	gnupg	gnupg	1.2.6	Yes
Application	gnupg	gnupg	1.2.7	Yes
Application	gnupg	gnupg	1.3.0	Yes
Application	gnupg	gnupg	1.3.1	Yes
Application	gnupg	gnupg	1.3.2	Yes
Application	gnupg	gnupg	1.3.3	Yes
Application	gnupg	gnupg	1.3.4	Yes
Application	gnupg	gnupg	1.3.6	Yes
Application	gnupg	gnupg	1.3.90	Yes
Application	gnupg	gnupg	1.3.91	Yes
Application	gnupg	gnupg	1.3.92	Yes
Application	gnupg	gnupg	1.3.93	Yes
Application	gnupg	gnupg	1.4.0	Yes
Application	gnupg	gnupg	1.4.10	Yes
Application	gnupg	gnupg	1.4.11	Yes
Application	gnupg	gnupg	1.4.12	Yes
Application	gnupg	gnupg	2.0.1	Yes
Application	gnupg	gnupg	2.0.3	Yes
Application	gnupg	gnupg	2.0.4	Yes
Application	gnupg	gnupg	2.0.5	Yes
Application	gnupg	gnupg	2.0.6	Yes
Application	gnupg	gnupg	2.0.7	Yes
Application	gnupg	gnupg	2.0.8	Yes
Application	gnupg	gnupg	2.0.10	Yes
Application	gnupg	gnupg	2.0.11	Yes
Application	gnupg	gnupg	2.0.12	Yes
Application	gnupg	gnupg	2.0.13	Yes
Application	gnupg	gnupg	2.0.14	Yes
Application	gnupg	gnupg	2.0.15	Yes
Application	gnupg	gnupg	2.0.16	Yes
Application	gnupg	gnupg	2.0.17	Yes
Application	gnupg	gnupg	2.0.18	Yes
Application	gnupg	gnupg	2.0.19	Yes
Application	gnupg	libgcrypt	≤ 1.5.2	Yes
Application	gnupg	libgcrypt	1.4.0	Yes
Application	gnupg	libgcrypt	1.4.3	Yes
Application	gnupg	libgcrypt	1.4.4	Yes
Application	gnupg	libgcrypt	1.4.5	Yes
Application	gnupg	libgcrypt	1.4.6	Yes
Application	gnupg	libgcrypt	1.5.0	Yes
Application	gnupg	libgcrypt	1.5.1	Yes
Operating System	opensuse	opensuse	12.2	Yes
Operating System	opensuse	opensuse	12.3	Yes

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=717880 ([email protected])
http://eprint.iacr.org/2013/448 ([email protected])
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705 ([email protected])
http://lists.gnupg.org/pipermail/gnupg-announce/2013q3/000330.html ([email protected])
http://lists.opensuse.org/opensuse-updates/2013-08/msg00003.html Vendor Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2013-1457.html ([email protected])
http://secunia.com/advisories/54318 Vendor Advisory ([email protected])
http://secunia.com/advisories/54321 Vendor Advisory ([email protected])
http://secunia.com/advisories/54332 Vendor Advisory ([email protected])
http://secunia.com/advisories/54375 Vendor Advisory ([email protected])
http://www.debian.org/security/2013/dsa-2730 ([email protected])
http://www.debian.org/security/2013/dsa-2731 ([email protected])
http://www.kb.cert.org/vuls/id/976534 US Government Resource ([email protected])
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html ([email protected])
http://www.securityfocus.com/bid/61464 ([email protected])
http://www.ubuntu.com/usn/USN-1923-1 Vendor Advisory ([email protected])
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=717880 (af854a3a-2127-422b-91ae-364da2661108)
http://eprint.iacr.org/2013/448 (af854a3a-2127-422b-91ae-364da2661108)
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705 (af854a3a-2127-422b-91ae-364da2661108)
http://lists.gnupg.org/pipermail/gnupg-announce/2013q3/000330.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2013-08/msg00003.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2013-1457.html (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/54318 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/54321 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/54332 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/54375 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2013/dsa-2730 (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2013/dsa-2731 (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/976534 US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/61464 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-1923-1 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For canonical's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.