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path: root/security/apparmor/include/perms.h (follow)
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2018-07-19apparmor: Check buffer bounds when mapping permissions maskTyler Hicks1-1/+2
Don't read past the end of the buffer containing permissions characters or write past the end of the destination string. Detected by CoverityScan CID#1415361, 1415376 ("Out-of-bounds access") Fixes: e53cfe6c7caa ("apparmor: rework perm mapping to a slightly broader set") Signed-off-by: Tyler Hicks <tyhicks@canonical.com> Acked-by: Serge Hallyn <serge@hallyn.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
2018-03-13apparmor: add base infastructure for socket mediationJohn Johansen1-2/+3
version 2 - Force an abi break. Network mediation will only be available in v8 abi complaint policy. Provide a basic mediation of sockets. This is not a full net mediation but just whether a spcific family of socket can be used by an application, along with setting up some basic infrastructure for network mediation to follow. the user space rule hav the basic form of NETWORK RULE = [ QUALIFIERS ] 'network' [ DOMAIN ] [ TYPE | PROTOCOL ] DOMAIN = ( 'inet' | 'ax25' | 'ipx' | 'appletalk' | 'netrom' | 'bridge' | 'atmpvc' | 'x25' | 'inet6' | 'rose' | 'netbeui' | 'security' | 'key' | 'packet' | 'ash' | 'econet' | 'atmsvc' | 'sna' | 'irda' | 'pppox' | 'wanpipe' | 'bluetooth' | 'netlink' | 'unix' | 'rds' | 'llc' | 'can' | 'tipc' | 'iucv' | 'rxrpc' | 'isdn' | 'phonet' | 'ieee802154' | 'caif' | 'alg' | 'nfc' | 'vsock' | 'mpls' | 'ib' | 'kcm' ) ',' TYPE = ( 'stream' | 'dgram' | 'seqpacket' | 'rdm' | 'raw' | 'packet' ) PROTOCOL = ( 'tcp' | 'udp' | 'icmp' ) eg. network, network inet, Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2018-01-12apparmor: fix ptrace label match when matching stacked labelsJohn Johansen1-0/+3
Given a label with a profile stack of A//&B or A//&C ... A ptrace rule should be able to specify a generic trace pattern with a rule like ptrace trace A//&**, however this is failing because while the correct label match routine is called, it is being done post label decomposition so it is always being done against a profile instead of the stacked label. To fix this refactor the cross check to pass the full peer label in to the label_match. Fixes: 290f458a4f16 ("apparmor: allow ptrace checks to be finer grained than just capability") Cc: Stable <stable@vger.kernel.org> Reported-by: Matthew Garrett <mjg59@google.com> Tested-by: Matthew Garrett <mjg59@google.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-10-26Revert "apparmor: add base infastructure for socket mediation"Linus Torvalds1-3/+2
This reverts commit 651e28c5537abb39076d3949fb7618536f1d242e. This caused a regression: "The specific problem is that dnsmasq refuses to start on openSUSE Leap 42.2. The specific cause is that and attempt to open a PF_LOCAL socket gets EACCES. This means that networking doesn't function on a system with a 4.14-rc2 system." Sadly, the developers involved seemed to be in denial for several weeks about this, delaying the revert. This has not been a good release for the security subsystem, and this area needs to change development practices. Reported-and-bisected-by: James Bottomley <James.Bottomley@hansenpartnership.com> Tracked-by: Thorsten Leemhuis <regressions@leemhuis.info> Cc: John Johansen <john.johansen@canonical.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Seth Arnold <seth.arnold@canonical.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-22apparmor: add base infastructure for socket mediationJohn Johansen1-2/+3
Provide a basic mediation of sockets. This is not a full net mediation but just whether a spcific family of socket can be used by an application, along with setting up some basic infrastructure for network mediation to follow. the user space rule hav the basic form of NETWORK RULE = [ QUALIFIERS ] 'network' [ DOMAIN ] [ TYPE | PROTOCOL ] DOMAIN = ( 'inet' | 'ax25' | 'ipx' | 'appletalk' | 'netrom' | 'bridge' | 'atmpvc' | 'x25' | 'inet6' | 'rose' | 'netbeui' | 'security' | 'key' | 'packet' | 'ash' | 'econet' | 'atmsvc' | 'sna' | 'irda' | 'pppox' | 'wanpipe' | 'bluetooth' | 'netlink' | 'unix' | 'rds' | 'llc' | 'can' | 'tipc' | 'iucv' | 'rxrpc' | 'isdn' | 'phonet' | 'ieee802154' | 'caif' | 'alg' | 'nfc' | 'vsock' | 'mpls' | 'ib' | 'kcm' ) ',' TYPE = ( 'stream' | 'dgram' | 'seqpacket' | 'rdm' | 'raw' | 'packet' ) PROTOCOL = ( 'tcp' | 'udp' | 'icmp' ) eg. network, network inet, Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2017-06-10apparmor: add cross check permission helper macrosJohn Johansen1-1/+41
The cross check permission helper macros will help simplify code that does cross task permission checks like ptrace. Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-06-10apparmor: switch from profiles to using labels on contextsJohn Johansen1-1/+11
Begin the actual switch to using domain labels by storing them on the context and converting the label to a singular profile where possible. Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-06-10apparmor: switch from file_perms to aa_permsJohn Johansen1-1/+1
Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-06-10apparmor: add gerneric permissions struct and support fnsJohn Johansen1-0/+34
Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-06-09apparmor: rework perm mapping to a slightly broader setJohn Johansen1-19/+50
Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-06-08apparmor: move permissions into their own file to be more easily sharedJohn Johansen1-0/+40
Signed-off-by: John Johansen <john.johansen@canonical.com>
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