** Description changed:
- when adding an SNMP - Interface statistics data query, and clicking on
- the 'verbose list' link, I get a 500 internal error, and the following
- line in the apache log file:
+ [IMPACT]
+ * If you try to turn on "SNMP - Interface Statistics" on a host with SNMP
facilities turned off, the current behavior of cacti is that it generates a php
error instead of catching the empty result. As this behavior is basically
strange user behavior, the impact is small. I don't think this warrants an SRU,
but still my patch fixes the issue by testing for empty results (as is intended
by the code) and thus allowing the php code to return normally (although still
not telling you what went wrong).
+
+ [TESTCASE]
+
+ * With cacti installed and configured, go to the /cacti/host.php page (via
the "devices" link on every cacti page) and select a device (e.g. localhost)
+ * Make sure that in the SNMP Options section the SNMP Version is set to "Not
In Use"
+ * In the "Associated Data Queries" part, select "SNMP - Interface
Statistics" in the "Add data query" drop down selection box and press "Add".
+ * The next screen is blank.
+ * In the apache error.log you will find:
+ PHP Fatal error: Cannot use string offset as an array in
/usr/share/cacti/site/lib/data_query.php on line 183, referer:
http://localhost/cacti/host.php?action=edit&id=1
+ * After the patch the result will be return to the host.php file, but it
will show the added "SNMP - Interface Statistics" with "Success [0 Items, 0
Rows]"
+
+ [Regression Potential]
+
+ * I don't know how adding a check for emptyness of a variable that
+ should not be empty can cause regression. Maybe somebody else can come
+ up with one?
+
+ [Other Info]
+
+ * As mentioned before, I am not sure this issue warrants a SRU.
+
+ [original report]
+ when adding an SNMP - Interface statistics data query, and clicking on the
'verbose list' link, I get a 500 internal error, and the following line in the
apache log file:
PHP Fatal error: Cannot use string offset as an array in
/usr/share/cacti/site/lib/data_query.php on line 183, referer:
http://localhost/cacti/host.php?action=edit&id=1
this prevents me from having network interface statistics followed by
cacti.
additional info:
# lsb_release -rd
Description: Ubuntu 10.04.3 LTS
Release: 10.04
# apt-cache policy cacti
cacti:
Installed: 0.8.7e-2ubuntu0.2
Candidate: 0.8.7e-2ubuntu0.2
Version table:
*** 0.8.7e-2ubuntu0.2 0
500 http://mirror.us.leaseweb.net/ubuntu/ lucid-updates/universe
Packages
500 http://security.ubuntu.com/ubuntu/ lucid-security/universe
Packages
100 /var/lib/dpkg/status
0.8.7e-2 0
500 http://mirror.us.leaseweb.net/ubuntu/ lucid/universe Packages
# apt-cache policy php5
php5:
Installed: 5.3.2-1ubuntu4.11
Candidate: 5.3.2-1ubuntu4.11
Version table:
*** 5.3.2-1ubuntu4.11 0
500 http://mirror.us.leaseweb.net/ubuntu/ lucid-updates/main Packages
500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
100 /var/lib/dpkg/status
5.3.2-1ubuntu4 0
500 http://mirror.us.leaseweb.net/ubuntu/ lucid/main Packages
** Changed in: cacti (Ubuntu Lucid)
Status: Incomplete => Confirmed
** Description changed:
- [IMPACT]
- * If you try to turn on "SNMP - Interface Statistics" on a host with SNMP
facilities turned off, the current behavior of cacti is that it generates a php
error instead of catching the empty result. As this behavior is basically
strange user behavior, the impact is small. I don't think this warrants an SRU,
but still my patch fixes the issue by testing for empty results (as is intended
by the code) and thus allowing the php code to return normally (although still
not telling you what went wrong).
+ [IMPACT]
+ * If you try to turn on "SNMP - Interface Statistics" on a host with SNMP
facilities turned off, the current behavior of cacti is that it generates a php
error instead of catching the empty result. As this behavior is basically
strange user behavior, the impact is small. I don't think this warrants an SRU,
but still my patch fixes the issue by testing for empty results (as is intended
by the code) and thus allowing the php code to return normally (although still
not telling you what went wrong).
[TESTCASE]
- * With cacti installed and configured, go to the /cacti/host.php page (via
the "devices" link on every cacti page) and select a device (e.g. localhost)
- * Make sure that in the SNMP Options section the SNMP Version is set to "Not
In Use"
- * In the "Associated Data Queries" part, select "SNMP - Interface
Statistics" in the "Add data query" drop down selection box and press "Add".
- * The next screen is blank.
- * In the apache error.log you will find:
- PHP Fatal error: Cannot use string offset as an array in
/usr/share/cacti/site/lib/data_query.php on line 183, referer:
http://localhost/cacti/host.php?action=edit&id=1
- * After the patch the result will be return to the host.php file, but it
will show the added "SNMP - Interface Statistics" with "Success [0 Items, 0
Rows]"
+ * With cacti installed and configured, go to the /cacti/host.php page (via
the "devices" link on every cacti page) and select a device (e.g. localhost)
+ * Make sure that in the SNMP Options section the SNMP Version is set to "Not
In Use"
+ * In the "Associated Data Queries" part, select "SNMP - Interface
Statistics" in the "Add data query" drop down selection box and press "Add".
+ * The next screen is blank.
+ * In the apache error.log you will find:
+ PHP Fatal error: Cannot use string offset as an array in
/usr/share/cacti/site/lib/data_query.php on line 183, referer:
http://localhost/cacti/host.php?action=edit&id=1
+ * After the patch the result will be return to the host.php file, but it
will show the added "SNMP - Interface Statistics" with "Success [0 Items, 0
Rows]"
[Regression Potential]
- * I don't know how adding a check for emptyness of a variable that
+ * I don't know how adding a check for emptyness of a variable that
should not be empty can cause regression. Maybe somebody else can come
up with one?
[Other Info]
-
- * As mentioned before, I am not sure this issue warrants a SRU.
+
+ * As mentioned before, I am not sure this issue warrants a SRU.
+ * Only lucid (-updates) is effected by this bug, other Ubuntu releases
don't experience it.
[original report]
when adding an SNMP - Interface statistics data query, and clicking on the
'verbose list' link, I get a 500 internal error, and the following line in the
apache log file:
PHP Fatal error: Cannot use string offset as an array in
/usr/share/cacti/site/lib/data_query.php on line 183, referer:
http://localhost/cacti/host.php?action=edit&id=1
this prevents me from having network interface statistics followed by
cacti.
additional info:
# lsb_release -rd
Description: Ubuntu 10.04.3 LTS
Release: 10.04
# apt-cache policy cacti
cacti:
- Installed: 0.8.7e-2ubuntu0.2
- Candidate: 0.8.7e-2ubuntu0.2
- Version table:
- *** 0.8.7e-2ubuntu0.2 0
- 500 http://mirror.us.leaseweb.net/ubuntu/ lucid-updates/universe
Packages
- 500 http://security.ubuntu.com/ubuntu/ lucid-security/universe
Packages
- 100 /var/lib/dpkg/status
- 0.8.7e-2 0
- 500 http://mirror.us.leaseweb.net/ubuntu/ lucid/universe Packages
+ Installed: 0.8.7e-2ubuntu0.2
+ Candidate: 0.8.7e-2ubuntu0.2
+ Version table:
+ *** 0.8.7e-2ubuntu0.2 0
+ 500 http://mirror.us.leaseweb.net/ubuntu/ lucid-updates/universe
Packages
+ 500 http://security.ubuntu.com/ubuntu/ lucid-security/universe
Packages
+ 100 /var/lib/dpkg/status
+ 0.8.7e-2 0
+ 500 http://mirror.us.leaseweb.net/ubuntu/ lucid/universe Packages
# apt-cache policy php5
php5:
- Installed: 5.3.2-1ubuntu4.11
- Candidate: 5.3.2-1ubuntu4.11
- Version table:
- *** 5.3.2-1ubuntu4.11 0
- 500 http://mirror.us.leaseweb.net/ubuntu/ lucid-updates/main Packages
- 500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
- 100 /var/lib/dpkg/status
- 5.3.2-1ubuntu4 0
- 500 http://mirror.us.leaseweb.net/ubuntu/ lucid/main Packages
+ Installed: 5.3.2-1ubuntu4.11
+ Candidate: 5.3.2-1ubuntu4.11
+ Version table:
+ *** 5.3.2-1ubuntu4.11 0
+ 500 http://mirror.us.leaseweb.net/ubuntu/ lucid-updates/main Packages
+ 500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
+ 100 /var/lib/dpkg/status
+ 5.3.2-1ubuntu4 0
+ 500 http://mirror.us.leaseweb.net/ubuntu/ lucid/main Packages
** Description changed:
[IMPACT]
- * If you try to turn on "SNMP - Interface Statistics" on a host with SNMP
facilities turned off, the current behavior of cacti is that it generates a php
error instead of catching the empty result. As this behavior is basically
strange user behavior, the impact is small. I don't think this warrants an SRU,
but still my patch fixes the issue by testing for empty results (as is intended
by the code) and thus allowing the php code to return normally (although still
not telling you what went wrong).
+ * If you try to turn on "SNMP - Interface Statistics" on a host with SNMP
facilities turned off, the current behavior of cacti is that it generates a php
error instead of catching the empty result. As this behavior is basically
strange user behavior, the impact is small, although multiple people report the
issue. I don't think this warrants an SRU, but still my patch fixes the issue
by testing for empty results (as is intended by the code) and thus allowing the
php code to return normally (although still not telling you what went wrong).
[TESTCASE]
* With cacti installed and configured, go to the /cacti/host.php page (via
the "devices" link on every cacti page) and select a device (e.g. localhost)
* Make sure that in the SNMP Options section the SNMP Version is set to "Not
In Use"
* In the "Associated Data Queries" part, select "SNMP - Interface
Statistics" in the "Add data query" drop down selection box and press "Add".
* The next screen is blank.
* In the apache error.log you will find:
PHP Fatal error: Cannot use string offset as an array in
/usr/share/cacti/site/lib/data_query.php on line 183, referer:
http://localhost/cacti/host.php?action=edit&id=1
* After the patch the result will be return to the host.php file, but it
will show the added "SNMP - Interface Statistics" with "Success [0 Items, 0
Rows]"
[Regression Potential]
* I don't know how adding a check for emptyness of a variable that
should not be empty can cause regression. Maybe somebody else can come
up with one?
[Other Info]
* As mentioned before, I am not sure this issue warrants a SRU.
- * Only lucid (-updates) is effected by this bug, other Ubuntu releases
don't experience it.
+ * Only lucid (-updates) is effected by this bug, other Ubuntu releases
don't experience it.
[original report]
when adding an SNMP - Interface statistics data query, and clicking on the
'verbose list' link, I get a 500 internal error, and the following line in the
apache log file:
PHP Fatal error: Cannot use string offset as an array in
/usr/share/cacti/site/lib/data_query.php on line 183, referer:
http://localhost/cacti/host.php?action=edit&id=1
this prevents me from having network interface statistics followed by
cacti.
additional info:
# lsb_release -rd
Description: Ubuntu 10.04.3 LTS
Release: 10.04
# apt-cache policy cacti
cacti:
Installed: 0.8.7e-2ubuntu0.2
Candidate: 0.8.7e-2ubuntu0.2
Version table:
*** 0.8.7e-2ubuntu0.2 0
500 http://mirror.us.leaseweb.net/ubuntu/ lucid-updates/universe
Packages
500 http://security.ubuntu.com/ubuntu/ lucid-security/universe
Packages
100 /var/lib/dpkg/status
0.8.7e-2 0
500 http://mirror.us.leaseweb.net/ubuntu/ lucid/universe Packages
# apt-cache policy php5
php5:
Installed: 5.3.2-1ubuntu4.11
Candidate: 5.3.2-1ubuntu4.11
Version table:
*** 5.3.2-1ubuntu4.11 0
500 http://mirror.us.leaseweb.net/ubuntu/ lucid-updates/main Packages
500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
100 /var/lib/dpkg/status
5.3.2-1ubuntu4 0
500 http://mirror.us.leaseweb.net/ubuntu/ lucid/main Packages
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https://bugs.launchpad.net/bugs/914746
Title:
cacti SNMP verbose query PHP error
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