Bug 1306184 (CVE-2015-7511) - CVE-2015-7511 libgcrypt: side-channel attack on ECDH with Weierstrass curves
Summary: CVE-2015-7511 libgcrypt: side-channel attack on ECDH with Weierstrass curves
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2015-7511
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1306185 1306186 1306187
Blocks: 1306188
TreeView+ depends on / blocked
 
Reported: 2016-02-10 09:12 UTC by Andrej Nemec
Modified: 2021-02-17 04:21 UTC (History)
8 users (show)

Fixed In Version: libgcrypt 1.6.5
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-06-08 05:57:02 UTC


Attachments (Terms of Use)

Description Andrej Nemec 2016-02-10 09:12:30 UTC
A vulnerability was found in a way the ECDH encryption algorithm decrypts data. An attacker with a specialised setup can extract the secret decryption key from a target located in an adjacent room within seconds. This is done by measuring the target's electromagnetic emanations.

External reference:

http://www.cs.tau.ac.il/~tromer/ecdh/

Upstream announcement:

https://lists.gnupg.org/pipermail/gnupg-announce/2016q1/000384.html

Comment 1 Andrej Nemec 2016-02-10 09:13:13 UTC
Created libgcrypt tracking bugs for this issue:

Affects: fedora-all [bug 1306185]

Comment 2 Andrej Nemec 2016-02-10 09:13:19 UTC
Created mingw-libgcrypt tracking bugs for this issue:

Affects: fedora-all [bug 1306186]
Affects: epel-7 [bug 1306187]

Comment 3 Andrej Nemec 2016-02-10 09:18:58 UTC
Upstream bug fix:

http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=88e1358962e902ff1cbec8d53ba3eee46407851a

Note:

The preferred way to protect against this vulnerability is to update to the new package version.

Comment 6 Fedora Update System 2016-07-22 18:21:06 UTC
libgcrypt-1.6.5-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2016-08-05 20:50:31 UTC
libgcrypt-1.6.5-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.


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