CVE-2016-6313: Infoleak
First published: Tue Dec 13 2016(Updated: )
The mixing functions in the random number generator in Libgcrypt before 1.5.6, 1.6.x before 1.6.6, and 1.7.x before 1.7.3 and GnuPG before 1.4.21 make it easier for attackers to obtain the values of 160 bits by leveraging knowledge of the previous 4640 bits.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libgcrypt | <=1.5.3 | |
| Libgcrypt | =1.6.0 | |
| Libgcrypt | =1.6.1 | |
| Libgcrypt | =1.6.2 | |
| Libgcrypt | =1.6.3 | |
| Libgcrypt | =1.6.4 | |
| Libgcrypt | =1.6.5 | |
| Libgcrypt | =1.7.0 | |
| Libgcrypt | =1.7.1 | |
| Libgcrypt | =1.7.2 | |
| Debian | =8.0 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| GnuPG 2 (Gnu Privacy Guard) | <=1.4.14 |
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Reference Links
- http://rhn.redhat.com/errata/RHSA-2016-2674.html
- http://www.debian.org/security/2016/dsa-3649
- http://www.debian.org/security/2016/dsa-3650
- http://www.securityfocus.com/bid/92527
- http://www.securitytracker.com/id/1036635
- http://www.ubuntu.com/usn/USN-3064-1
- http://www.ubuntu.com/usn/USN-3065-1
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=blob_plain;f=NEWS
- https://lists.gnupg.org/pipermail/gnupg-announce/2016q3/000395.html
- https://security.gentoo.org/glsa/201610-04
- https://security.gentoo.org/glsa/201612-01
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=blob_plain%3Bf=NEWS
Frequently Asked Questions
What is the severity of CVE-2016-6313?
CVE-2016-6313 is classified as a medium severity vulnerability due to its potential to weaken cryptographic processes.
How do I fix CVE-2016-6313?
To fix CVE-2016-6313, update Libgcrypt to version 1.5.6, 1.6.6 or later, or 1.7.3 or later.
What versions of Libgcrypt are affected by CVE-2016-6313?
CVE-2016-6313 affects Libgcrypt versions before 1.5.6, all 1.6.x versions before 1.6.6, and all 1.7.x versions before 1.7.3.
How does CVE-2016-6313 impact cryptographic security?
CVE-2016-6313 allows attackers to potentially predict random values generated by the random number generator, weakening security.
Is GnuPG also affected by CVE-2016-6313?
Yes, GnuPG versions before 1.4.21 are also affected by CVE-2016-6313 and should be updated.
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/author
- agent/weakness
- agent/last-modified-date
- agent/severity
- agent/type
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- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/gnupg
- canonical/libgcrypt
- version/libgcrypt/1.5.3
- version/libgcrypt/1.6.0
- version/libgcrypt/1.6.1
- version/libgcrypt/1.6.2
- version/libgcrypt/1.6.3
- version/libgcrypt/1.6.4
- version/libgcrypt/1.6.5
- version/libgcrypt/1.7.0
- version/libgcrypt/1.7.1
- version/libgcrypt/1.7.2
- vendor/debian
- canonical/debian
- version/debian/8.0
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/12.04
- version/ubuntu/14.04
- version/ubuntu/16.04
- canonical/gnupg 2 (gnu privacy guard)
- version/gnupg 2 (gnu privacy guard)/1.4.14