| <?xml version="1.0" encoding="utf-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| |
| <glsa id="200503-02"> |
| <title>phpBB: Multiple vulnerabilities</title> |
| <synopsis> |
| Several vulnerabilities allow remote attackers to gain phpBB administrator |
| rights or expose and manipulate sensitive data. |
| </synopsis> |
| <product type="ebuild">phpbb</product> |
| <announced>March 01, 2005</announced> |
| <revised>March 01, 2005: 01</revised> |
| <bug>82955</bug> |
| <access>local and remote</access> |
| <affected> |
| <package name="www-apps/phpBB" auto="yes" arch="*"> |
| <unaffected range="ge">2.0.13</unaffected> |
| <vulnerable range="lt">2.0.13</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p> |
| phpBB is an Open Source bulletin board package. |
| </p> |
| </background> |
| <description> |
| <p> |
| It was discovered that phpBB contains a flaw in the session |
| handling code and a path disclosure bug. AnthraX101 discovered that |
| phpBB allows local users to read arbitrary files, if the "Enable remote |
| avatars" and "Enable avatar uploading" options are set (CAN-2005-0259). |
| He also found out that incorrect input validation in |
| "usercp_avatar.php" and "usercp_register.php" makes phpBB vulnerable to |
| directory traversal attacks, if the "Gallery avatars" setting is |
| enabled (CAN-2005-0258). |
| </p> |
| </description> |
| <impact type="normal"> |
| <p> |
| Remote attackers can exploit the session handling flaw to gain |
| phpBB administrator rights. By providing a local and a remote location |
| for an avatar and setting the "Upload Avatar from a URL:" field to |
| point to the target file, a malicious local user can read arbitrary |
| local files. By inserting "/../" sequences into the "avatarselect" |
| parameter, a remote attacker can exploit the directory traversal |
| vulnerability to delete arbitrary files. A flaw in the "viewtopic.php" |
| script can be exploited to expose the full path of PHP scripts. |
| </p> |
| </impact> |
| <workaround> |
| <p> |
| There is no known workaround at this time. |
| </p> |
| </workaround> |
| <resolution> |
| <p> |
| All phpBB users should upgrade to the latest available version: |
| </p> |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose ">=www-apps/phpBB-2.0.13"</code> |
| </resolution> |
| <references> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0258">CAN-2005-0258</uri> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0259">CAN-2005-0259</uri> |
| <uri link="http://www.phpbb.com/phpBB/viewtopic.php?f=14&t=267563">phpBB announcement</uri> |
| </references> |
| <metadata tag="requester" timestamp="Mon, 28 Feb 2005 14:35:23 +0000"> |
| koon |
| </metadata> |
| <metadata tag="submitter" timestamp="Mon, 28 Feb 2005 15:10:08 +0000"> |
| DerCorny |
| </metadata> |
| <metadata tag="bugReady" timestamp="Tue, 1 Mar 2005 18:22:22 +0000"> |
| koon |
| </metadata> |
| </glsa> |