The ncpfs utilities contain multiple flaws, potentially resulting in the remote execution of arbitrary code or local file access with elevated privileges.
|Package||net-fs/ncpfs on all architectures|
|Affected versions||< 2.2.6|
|Unaffected versions||>= 2.2.6|
ncpfs is a NCP protocol network filesystem driver that allows access to NetWare services, to mount volumes of NetWare servers or print to NetWare print queues.
Erik Sjolund discovered two vulnerabilities in the programs bundled with ncpfs: there is a potentially exploitable buffer overflow in ncplogin (CAN-2005-0014), and due to a flaw in nwclient.c, utilities using the NetWare client functions insecurely access files with elevated privileges (CAN-2005-0013).
The buffer overflow might allow a malicious remote NetWare server to execute arbitrary code on the NetWare client. Furthermore, a local attacker may be able to create links and access files with elevated privileges using SUID ncpfs utilities.
There is no known workaround at this time.
All ncpfs users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-fs/ncpfs-2.2.6"
January 30, 2005
January 30, 2005: 01
remote and local