Peter Paul Elfferich discovered that turba2, a contact management component for horde framework, did not correctly check access rights before allowing users to edit addresses. This could result in valid users being able to alter private address records.
For the old stable distribution (sarge), this problem has been fixed in version 2.0.2-1sarge1.
For the stable distribution (etch), this problem has been fixed in version 2.1.3-1etch1.
For the unstable distribution (sid), this problem has been fixed in version 2.1.7-1.
We recommend that you upgrade your turba2 package.
MD5 checksums of the listed files are available in the original advisory.