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Debian Security Advisory 2246-1

Debian Security Advisory 2246-1
Posted May 29, 2011
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2246-1 - Several vulnerabilities were discovered in mahara, an electronic portfolio, weblog, and resume builder.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2011-1402, CVE-2011-1403, CVE-2011-1404, CVE-2011-1405, CVE-2011-1406
SHA-256 | ba3a5abdd8001f5ec154d30befa0306d62a84e4263dc60f203fbe254133a260f

Debian Security Advisory 2246-1

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2246-1 security@debian.org
http://www.debian.org/security/ Giuseppe Iuculano
May 29, 2011 http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : mahara
Vulnerability : several vulnerabilities
Problem type : remote
Debian-specific: no
CVE ID : CVE-2011-1402 CVE-2011-1403 CVE-2011-1404 CVE-2011-1405

Several vulnerabilities were discovered in mahara, an electronic portfolio,
weblog, and resume builder. The following Common Vulnerabilities and
Exposures project ids identify them:


It was discovered that previous versions of Mahara did not check user
credentials before adding a secret URL to a view or suspending a user.


Due to a misconfiguration of the Pieform package in Mahara, the cross-site
request forgery protection mechanism that Mahara relies on to harden its
form was not working and was essentially disabled.
This is a critical vulnerability which could allow attackers to trick other
users (for example administrators) into performing malicious actions on
behalf of the attacker. Most Mahara forms are vulnerable.


Many of the JSON structures returned by Mahara for its AJAX interactions
included more information than what ought to be disclosed to the logged in
user. New versions of Mahara limit this information to what is necessary for
each page.


Previous versions of Mahara did not escape the contents of HTML emails sent
to users. Depending on the filters enabled in one's mail reader, it could
lead to cross-site scripting attacks.


It has been pointed out to us that if Mahara is configured (through its
wwwroot variable) to use HTTPS, it will happily let users login via the HTTP
version of the site if the web server is configured to serve content over
both protocol. The new version of Mahara will, when the wwwroot points to an
HTTPS URL, automatically redirect to HTTPS if it detects that it is being
run over HTTP.

We recommend that sites wanting to run Mahara over HTTPS make sure that
their web server configuration does not allow the serving of content over
HTTP and merely redirects to the secure version. We also suggest that site
administrators consider adding the HSTS headers
(http://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security) to their web
server configuration.

For the oldstable distribution (lenny), these problems have been fixed in
version 1.0.4-4+lenny10.

For the stable distribution (squeeze), these problems have been fixed in
version 1.2.6-2+squeeze2.

For the testing distribution (wheezy), these problems have been fixed in
version 1.3.6-1.

For the unstable distribution (sid), these problems have been fixed in
version 1.3.6-1.

We recommend that you upgrade your mahara packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
Version: GnuPG v1.4.11 (GNU/Linux)


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