SB2015112101 - Ubuntu update for tomcat6

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Main Vulnerability Database SB2015112101

SB2015112101 - Ubuntu update for tomcat6

Published: November 21, 2015 Updated: October 30, 2026

Security Bulletin ID SB2015112101
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Input validation error (CVE-ID: CVE-2012-2733)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can pass a large amount of header data and perform a denial of service (DoS) attack.


2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2012-5885)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass intended access restrictions.

The vulnerability exists due to replay-countermeasure functionality in the HTTP Digest Access Authentication implementation in Apache Tomcat tracks cnonce (aka client nonce) values instead of nonce (aka server nonce) and nc (aka nonce-count) values. A remote attacker can bypass intended access restrictions by sniffing the network for valid requests


3) Improper Authentication (CVE-ID: CVE-2012-5886)

CWE-ID: CWE-287 - Improper Authentication

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to HTTP Digest Access Authentication implementation in Apache Tomcat. A remote attacker can bypass authentication via vectors related to the session ID.


4) Improper Authentication (CVE-ID: CVE-2012-5887)

CWE-ID: CWE-287 - Improper Authentication

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to HTTP Digest Access Authentication implementation in Apache Tomcat does not properly check for stale nonce values in conjunction with enforcement of proper credentials. A remote attacker can bypass intended access restrictions by sniffing the network for valid requests.


Remediation

Install update from vendor's website.

References