A security flaw was found in the way Paster, a pluggable command-line frontend, when started as root (for example to have access to privileged port) to serve a web based application, performed privileges dropping upon startup (supplementary groups were not dropped properly regardless of the UID, GID specified in the .ini configuration file or in the --user and --group CL arguments). A remote attacker could use this flaw for example to read / write root GID accessible files, if the particular web application provided remote means for local file manipulation. References: [1] http://groups.google.com/group/paste-users/browse_thread/thread/2aa651ba331c2471 Patch proposed by the issue reporter: [2] https://bitbucket.org/ianb/pastescript/pull-request/3/fix-group-permissions-for-pastescriptserve Upstream patch: [3] https://bitbucket.org/ianb/pastescript/changeset/a19e462769b4
CVE request: [4] http://www.openwall.com/lists/oss-security/2012/02/23/1
This issue affects the version of the python-paste-script package, as shipped with Red Hat Enterprise Linux 6. -- This issue affects the versions of the python-paste-script package, as shipped with Fedora EPEL 4 and Fedora EPEL 5 releases. Please schedule an update. Note: Luke, assuming Fedora EPEL 4 will go EOL shortly. Have filed bug, but feel free to close it if you think it's not appropriate anymore. -- This issue affects the versions of the python-paste-script package, as shipped with Fedora release of 15 and 16. Please schedule an update.
Created python-paste-script tracking bugs for this issue Affects: epel-4 [bug 796809] Affects: epel-5 [bug 796810] Affects: fedora-all [bug 796811]
This has been assigned CVE-2012-0878: http://www.openwall.com/lists/oss-security/2012/02/23/4
python-paste-script-1.7.5-1.el5 has been pushed to the Fedora EPEL 5 stable repository. If problems still persist, please make note of it in this bug report.
python-paste-script-1.7.5-4.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.
python-paste-script-1.7.5-4.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.
python-paste-script-1.7.5-4.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.
This issue has been addressed in following products: Red Hat Enterprise Linux 6 Via RHSA-2012:1206 https://rhn.redhat.com/errata/RHSA-2012-1206.html