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amazonAmazonALAS-2018-1025
HistoryMay 25, 2018 - 6:21 p.m.

Low: gnupg2

2018-05-2518:21:00
alas.aws.amazon.com
499

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

0.002 Low

EPSS

Percentile

50.7%

Issue Overview:

Unenforced configuration allows for apparently valid certifications actually signed by signing subkeys:
GnuPG 2.2.4 and 2.2.5 does not enforce a configuration in which key certification requires an offline master Certify key, which results in apparently valid certifications that occurred only with access to a signing subkey. (CVE-2018-9234)

Affected Packages:

gnupg2

Issue Correction:
Run yum update gnupg2 to update your system.

New Packages:

i686:  
    gnupg2-smime-2.0.28-2.32.amzn1.i686  
    gnupg2-debuginfo-2.0.28-2.32.amzn1.i686  
    gnupg2-2.0.28-2.32.amzn1.i686  
  
src:  
    gnupg2-2.0.28-2.32.amzn1.src  
  
x86_64:  
    gnupg2-smime-2.0.28-2.32.amzn1.x86_64  
    gnupg2-debuginfo-2.0.28-2.32.amzn1.x86_64  
    gnupg2-2.0.28-2.32.amzn1.x86_64  

Additional References

Red Hat: CVE-2018-9234

Mitre: CVE-2018-9234

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

0.002 Low

EPSS

Percentile

50.7%