1. Ubuntu Security Notices
  2. USN-685-1

USN-685-1: Net-SNMP vulnerabilities

Publication date

3 December 2008

Overview

Net-SNMP vulnerabilities

Releases

Packages

Details

Wes Hardaker discovered that the SNMP service did not correctly validate
HMAC authentication requests. An unauthenticated remote attacker
could send specially crafted SNMPv3 traffic with a valid username
and gain access to the user’s views without a valid authentication
passphrase. (CVE-2008-0960)

John Kortink discovered that the Net-SNMP Perl module did not correctly
check the size of returned values. If a user or automated system were
tricked into querying a malicious SNMP server, the application using
the Perl module could be made to crash, leading to a denial of service.
This did not affect Ubuntu 8.10. (CVE-2008-2292)

It was discovered that the SNMP service did not correctly handle large
GETBULK requests. If an unauthenticated remote attacker sent a specially
crafted request, the SNMP service could be made to crash, leading to a
denial of...

Wes Hardaker discovered that the SNMP service did not correctly validate
HMAC authentication requests. An unauthenticated remote attacker
could send specially crafted SNMPv3 traffic with a valid username
and gain access to the user’s views without a valid authentication
passphrase. (CVE-2008-0960)

John Kortink discovered that the Net-SNMP Perl module did not correctly
check the size of returned values. If a user or automated system were
tricked into querying a malicious SNMP server, the application using
the Perl module could be made to crash, leading to a denial of service.
This did not affect Ubuntu 8.10. (CVE-2008-2292)

It was discovered that the SNMP service did not correctly handle large
GETBULK requests. If an unauthenticated remote attacker sent a specially
crafted request, the SNMP service could be made to crash, leading to a
denial of service. (CVE-2008-4309)

Update instructions

In general, a standard system upgrade is sufficient to effect the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
8.10 intrepid libsnmp15 –  5.4.1~dfsg-7.1ubuntu6.1
8.04 hardy libsnmp-perl –  5.4.1~dfsg-4ubuntu4.2
libsnmp15 –  5.4.1~dfsg-4ubuntu4.2
7.10 gutsy libsnmp-perl –  5.3.1-6ubuntu2.2
libsnmp10 –  5.3.1-6ubuntu2.2
6.06 dapper libsnmp-perl –  5.2.1.2-4ubuntu2.3
libsnmp9 –  5.2.1.2-4ubuntu2.3

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References

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