Red Hat Bugzilla – Bug 743749
CVE-2011-3602 radvd: arbitrary file overwrite flaw in set_interface_var()
Last modified: 2016-06-10 17:41:37 EDT
An arbitrary file overwrite flaw was found in radvd's set_interface_var() function, where it did not check the interface name (generated by the unprivileged user) and blindly overwrites a filename with a decimal value by the root process. If a local attacker could create symlinks pointing to arbitrary files on the system, they could overwrite the target file contents. If only radvd is compromised (e.g. no local access), the attacker may only overwrite files with specific names only (PROC_SYS_IP6_* from radvd's pathnames.h). (CVE-2011-3602)
This is corrected in upstream git .
Red Hat would like to thank Vasiliy Kulikov of Openwall for reporting this issue.
This issue does not affect the version of radvd as shipped with Red Hat Enterprise Linux 4.
This issue affects the version of radvd as shipped with Red Hat Enterprise Linux 5 and 6.
This issue affects the version of radvd as shipped with Fedora 14 and 15.
Created radvd tracking bugs for this issue
Affects: fedora-all [bug 744116]
radvd-1.8.2-2.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.
radvd-1.8.2-2.fc14 has been pushed to the Fedora 14 stable repository. If problems still persist, please make note of it in this bug report.
radvd-1.8.2-2.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.
Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.