CVE-2013-4242

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Last Modified: UTC

ModerateModerate ImpactWhat does this mean?

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Description

The CVE Program describes this issue as:

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.

Statement

This issue affects the version of gnupg as shipped with Red Hat Enterprise Linux 5. This issue affects the version of libgcrypt as shipped with Red Hat Enterprise Linux 5 and 6. The Red Hat Security Response Team has rated this issue as having moderate security impact, a future update may address this flaw. More technical details on this flaw are available at https://bugzilla.redhat.com/show_bug.cgi?id=988589#c12

This issue affects the version of gnupg as shipped with Red Hat Enterprise Linux 5. This issue affects the version of libgcrypt as shipped with Red Hat Enterprise Linux 5 and 6. The Red Hat Security Response Team has rated this issue as having moderate security impact, a future update may address this flaw. More technical details on this flaw are available at https://bugzilla.redhat.com/show_bug.cgi?id=988589#c12

Additional information

  • Bugzilla 988589: GnuPG susceptible to Yarom/Falkner flush+reload cache side-channel attack
  • FAQ: Frequently asked questions about CVE-2013-4242

Common Vulnerability Scoring System (CVSS) Score Details

Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v2 Score Breakdown
Red HatNVD

CVSS v2 Base Score

1.9

1.9

Attack Vector

Local

Local

Access Complexity

Medium

Medium

Authentication

None

None

Confidentiality Impact

Partial

Partial

Integrity Impact

None

None

Availability Impact

None

None

CVSS v2 Vector

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

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

Frequently Asked Questions

Why is Red Hat's CVSS v3 score or Impact different from other vendors?

My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?

What can I do if my product is listed as "Will not fix"?

What can I do if my product is listed as "Fix deferred"?

What is a mitigation?

I have a Red Hat product but it is not in the above list, is it affected?

Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?

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