Bug 1198145 – CVE-2014-3591 libgcrypt: use ciphertext blinding for Elgamal decryption (new side-channel attack)

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Bug 1198145 - (CVE-2014-3591) CVE-2014-3591 libgcrypt: use ciphertext blinding for Elgamal decryption (new side-channel attack)

Summary:	CVE-2014-3591 libgcrypt: use ciphertext blinding for Elgamal decryption (new ...

Status:	NEW

Aliases:	CVE-2014-3591

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20150227,reported=2...
Keywords:	Security

Depends On:	1198152 1198153 1198154 1198156
Blocks:	1198150
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Reported:	2015-03-03 08:15 EST by Vasyl Kaigorodov
Modified:	2018-07-18 10:36 EDT (History)
CC List:	17 users (show)

See Also:
Fixed In Version:	libgcrypt 1.6.3, GnuPG 1.4.19
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
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Environment:
Last Closed:
Type:	---
Regression:	---
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RHEL 7.3 requirements from Atomic Host:
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Description Vasyl Kaigorodov 2015-03-03 08:15:30 EST

Libgcrypt version 1.6.3 [1] and GnuPG version 1.4.19 [2] fix a side-channel attack which can potentially lead to an information leak.
This issue is different from CVE-2014-5270.
Relevant upstream commits:

- libgcrypt master
http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=410d70bad9a650e3837055e36f157894ae49a57d

- libgcrypt 1.6.x CVE-2014-3591
http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=d482948ac41768c36c5352a513fca8c50d2da4db

- libgcrypt 1.5.x CVE-2014-3591
http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=35cd81f134c0da4e7e6fcfe40d270ee1251f52c2

- GnuPG 1.4.x CVE-2014-3591
http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=ff53cf06e966dce0daba5f2c84e03ab9db2c3c8b

[1]: https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000364.html
[2]: https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000363.html

Comment 1 Vasyl Kaigorodov 2015-03-03 08:21:16 EST

As per the upstream, to update a GnuPG 2.0 or 2.1 version you need to update the shared library Libgcrypt to version 1.6.3. Adjusting whiteboard.

Comment 2 Vasyl Kaigorodov 2015-03-03 08:24:03 EST

Created gnupg tracking bugs for this issue:

Affects: fedora-all [bug 1198154]

Comment 3 Vasyl Kaigorodov 2015-03-03 08:24:06 EST

Created libgcrypt tracking bugs for this issue:

Affects: fedora-all [bug 1198152]

Comment 4 Vasyl Kaigorodov 2015-03-03 08:24:09 EST

Created mingw-libgcrypt tracking bugs for this issue:

Affects: fedora-all [bug 1198153]

Comment 5 Vasyl Kaigorodov 2015-03-03 08:25:18 EST

Created mingw-libgcrypt tracking bugs for this issue:

Affects: epel-all [bug 1198156]

Comment 6 Fedora Update System 2015-03-06 01:58:04 EST

gnupg-1.4.19-1.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2015-03-13 13:01:51 EDT

libgcrypt-1.6.3-1.fc22 has been pushed to the Fedora 22 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2015-03-13 13:12:50 EDT

gnupg-1.4.19-1.fc22 has been pushed to the Fedora 22 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 Fedora Update System 2015-03-14 05:15:59 EDT

gnupg-1.4.19-2.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 10 Fedora Update System 2015-03-18 06:23:47 EDT

libgcrypt-1.6.3-1.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 11 Huzaifa S. Sidhpurwala 2015-06-02 03:14:09 EDT

Statement:

Red Hat Product Security has rated this issue as having low security impact, a future update may address this flaw in the libgcrypt and gnupg2 packages.

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