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amazonAmazonALAS-2016-742
HistorySep 27, 2016 - 10:30 a.m.

Low: curl

2016-09-2710:30:00
alas.aws.amazon.com
11

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.015 Low

EPSS

Percentile

86.6%

Issue Overview:

After testing original CVE-2016-5420 patch, it was discovered that libcurl built on top of NSS (Network Security Services) still incorrectly re-uses client certificates if a certificate from file is used for one TLS connection but no certificate is set for a subsequent TLS connection.

Affected Packages:

curl

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

New Packages:

i686:  
    libcurl-devel-7.47.1-8.65.amzn1.i686  
    curl-7.47.1-8.65.amzn1.i686  
    libcurl-7.47.1-8.65.amzn1.i686  
    curl-debuginfo-7.47.1-8.65.amzn1.i686  
  
src:  
    curl-7.47.1-8.65.amzn1.src  
  
x86_64:  
    curl-debuginfo-7.47.1-8.65.amzn1.x86_64  
    libcurl-7.47.1-8.65.amzn1.x86_64  
    libcurl-devel-7.47.1-8.65.amzn1.x86_64  
    curl-7.47.1-8.65.amzn1.x86_64  

Additional References

Red Hat: CVE-2016-7141, CVE-2016-7167

Mitre: CVE-2016-7141, CVE-2016-7167

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.015 Low

EPSS

Percentile

86.6%