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amazonAmazonALAS-2018-965
HistoryMar 07, 2018 - 9:16 p.m.

Medium: tomcat-native

2018-03-0721:16:00
alas.aws.amazon.com
11

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.004 Low

EPSS

Percentile

73.9%

Issue Overview:

Mishandling of client certificates can allow for OCSP check bypass:
When parsing the AIA-Extension field of a client certificate, Apache Tomcat Native Connector 1.2.0 to 1.2.14 and 1.1.23 to 1.1.34 did not correctly handle fields longer than 127 bytes. The result of the parsing error was to skip the OCSP check. It was therefore possible for client certificates that should have been rejected (if the OCSP check had been made) to be accepted. Users not using OCSP checks are not affected by this vulnerability. (CVE-2017-15698)

Affected Packages:

tomcat-native

Issue Correction:
Run yum update tomcat-native to update your system.

New Packages:

i686:  
    tomcat-native-1.2.16-1.20.amzn1.i686  
    tomcat-native-debuginfo-1.2.16-1.20.amzn1.i686  
  
src:  
    tomcat-native-1.2.16-1.20.amzn1.src  
  
x86_64:  
    tomcat-native-1.2.16-1.20.amzn1.x86_64  
    tomcat-native-debuginfo-1.2.16-1.20.amzn1.x86_64  

Additional References

Red Hat: CVE-2017-15698

Mitre: CVE-2017-15698

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.004 Low

EPSS

Percentile

73.9%