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amazonAmazonALAS-2016-744
HistorySep 15, 2016 - 7:00 p.m.

Medium: libgcrypt, gnupg

2016-09-1519:00:00
alas.aws.amazon.com
18

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.007 Low

EPSS

Percentile

80.3%

Issue Overview:

A design flaw was found in the libgcrypt PRNG (Pseudo-Random Number Generator). An attacker who can obtain the first 580 bytes of the PRNG output can trivially predict the following 20 bytes.

Affected Packages:

libgcrypt, gnupg

Issue Correction:
Run yum update libgcrypt to update your system.
Run yum update gnupg to update your system.

New Packages:

i686:  
    libgcrypt-devel-1.5.3-12.19.amzn1.i686  
    libgcrypt-1.5.3-12.19.amzn1.i686  
    libgcrypt-debuginfo-1.5.3-12.19.amzn1.i686  
    gnupg-debuginfo-1.4.19-1.28.amzn1.i686  
    gnupg-1.4.19-1.28.amzn1.i686  
  
src:  
    libgcrypt-1.5.3-12.19.amzn1.src  
    gnupg-1.4.19-1.28.amzn1.src  
  
x86_64:  
    libgcrypt-devel-1.5.3-12.19.amzn1.x86_64  
    libgcrypt-1.5.3-12.19.amzn1.x86_64  
    libgcrypt-debuginfo-1.5.3-12.19.amzn1.x86_64  
    gnupg-debuginfo-1.4.19-1.28.amzn1.x86_64  
    gnupg-1.4.19-1.28.amzn1.x86_64  

Additional References

Red Hat: CVE-2016-6313

Mitre: CVE-2016-6313

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.007 Low

EPSS

Percentile

80.3%