News
- 2008-10-02: Quagga 0.99.11 Released
Quagga 0.99.11 has been released, and is available, along with a full changelog, in the usual places.
Thanks to everyone who helped by reporting bugs, contributing and testing fixes.
Release notes
Stable release candidate
Most regressions in 0.99 over 0.98 are now believed to be fixed. This release should be considered a release-candidate for a new stable series, and we urge any remaining users of 0.98 to test this release and report any bugs. A blocker meta-bug exists to track critical regressions.
bgpd: Preliminary UI and Linux-IPv4 support for TCP-MD5 merged
Initial support for TCP-MD5 has been merged. This adds the neighbor ... password command, and some support for setting TCP-MD5 on pure-IPv4 connections on Linux. On Linux systems with IPv6 available, passing the -l 0.0.0.0 argument to bgpd may allow TCP-MD5 support to work. It's not possible at this point to have IPv6 sessions and also use TCP-MD5 on IPv4 sessions. This will hopefully be rectified in a future release.
bgpd: Fix double-free crash in bgp_table_finish, seen with rs-client
Though diagnosed with rs-clients, this fix very likely addresses a number of crashes reported to Quagga bugzilla.
zebra: ignore dead routes in RIB update
This fix may address some issues reported with routes not being consistent between the zebra RIB and the kernel FIB, remaining after the fixes in last release.
Solaris: Sync SMF bits with OpenSolaris SFW
The Quagga packaging support for Solaris has been updated to synchronise with OpenSolaris SFW. Of particular note is that SMF schema has been updated to match the Sun PSARC approved schema, which is supported by the OpenSolaris routeadm utility. User's may need to familiarise themselves with the changed FMRIs, and may need to update any administrative scripts.
A short-form list of more notable, code related changes:
bgpd: [bgpd] Document the FSM dummy-peer race that sometimes afflicts session setup [bgpd] Fix definition of an rsclient command [bgpd] Fix double-free crash in bgp_table_finish, seen with rs-client [bgpd] Fix triggerable crash when compiled with --disable-bgp-announce [bgpd] TCP-MD5: password vty configuration and initial Linux support build: [build] --enable...user/group didn't match help text [build] Fix --enable-pie so it can actually be disabled [build] Linux netlink doesn't need IF_PROC [build] Test for GNU-style PIE support in toolchain and enable Make --enable-snmp cross compile and make libcrypto optional with --without-crypto isisd: [isisd:DLPI] Try open vanity-named DLPI dev before style 1,2 [isisd] Fix packet filtering with DLPI [ospfd/isisd] Switch to lib/ Fletcher checksum, fixing bug in isisd lib: [lib] Add fletcher checksum implementation [vty] Add support for a 'restricted mode' with anonymous vty connections [vty] Allow delete during password entry [vty] CMD_AS_RANGE accidently quoted and so not expanded in vty ospfd: [ospfd] Default route needs to be refreshed after neighbour state change [ospfd] Fix SEGV during startup introduced in recent commit [ospfd] Move passive interface check [ospfd] Restructure opsf_if_update() and ospf_network_run() Fix SEGV in ip ospf neighbor all Ignore host routes to self. Set destination for PtP links to OSPF_ALLSPFROUTERS. packaging: [solaris] Sync SMF bits with OpenSolaris SFW tools: [tools/multiple-bgpd.sh] make it easier to use IPv6 peer addresses [tools/multiple-bgpd] setup IPv6 advertisments vtysh: [vtysh] small fix to previous CMD_AS_RANGE patch, and add missing command zebra: [zebra:linux] Filter out unwanted netlink messages by PID [zebra:linux] clean up blocking setting of netlink sockets [zebra:linux] netlink buffer size tweaking only needed on receive socket [zebra:linux] netlink: no need to change privs for receive [zebra:linux] netlink: quiet harmless errors [zebra:netlink] Set proto/scope on all route update messages [zebra] Make BSD link-state deal more gracefully with GIFMEDIA ioctl error [zebra] ignore dead routes in RIB update
- 2008-06-11: Quagga 0.99.10 Released
Quagga 0.99.10 has been released, and is available, along with a full changelog, in the usual places.
Thanks to everyone who helped by reporting bugs, contributing and testing fixes.
Release notes
zebra: Races in the RIB could lead to routes not being installed to kernel FIB
bgpd: 4-Byte AS Number support
Quagga now supports 4-byte AS numbers.
bgpd: Low impact AS4 Attribute DoS (Mu Security)
This release fixes further potential DoS conditions in bgpd, again reported by Mu Security, where a bgpd could be made to crash if an UPDATE was sent with certain AS4 attributes. The possible crashes are either a NULL pointer dereference, or an assert, and so are not thougth to be exploitable.
As AS4 support is only being introduced in this release of Quagga, the impact is considered neglible. The exception is where pre-release Quagga software, with initial AS4 support, has been deployed. Such deployments are vulnerable to a DoS initiated by any remote participant in the BGP network.
NB: The CVS commit message mistakenly says this affects only configured peers. The above advice takes precedence.
bgpd: Sundry regression fixes
Sessions would be incorrectly reset if a partial AS-Pathlimit attribute was received. All users of 0.99.9 bgpd, in which AS-Pathlimit support was introduced, that receive public routes will need to upgrade to 0.99.10 to avoid this issue.
Advertisement of Multi-Protocol prefixes (i.e. non-IPv4) had been broken in the 0.99.9 release.
BSD: Interface link-state now supported
Solaris: Support added for Solaris 10U5 IP instance privileges
A short-form list of code related changes:
zebra: [zebra] note the meta-queue in NEWS [zebra] initial edition of meta-queue for RIB updates processing (#431) [zebra] fix bug#326 by rib_lookup_and_pushup() [zebra/linux] Use BPF to filter out responses, to try avoid netlink overruns [zebra] fixed bug #418 (changing address on an existing interface doesn't cause existing static routes to be revalidated) [zebra] fix the bug reported by Milan Kocian (IPv6 route handling was broken by the RIB debug changeset). [zebra] rib_process() speedup for multi-nexthop route nodes [zebra] Minor bugfix: IPv6 prefixes were logged incorrectly in RIB debugging calls. Fixed. [zebra] sayonara old_pid! [zebra] fixed bug #402: now the second zebra process doesn't destroy routes of the first one before dying [zebra] we are not going to receive routing messages originated by old_pid, because rib_sweep_route() is called after damon() now. This will allow to drop old_pid completely soon. [zebra] Switch from LOOKUP() to lookup() for rtm_type (see bug #401 for details). [zebra] * rt_socket.c: (kernel_rtm_ipv4) prefix_buf could be passed to zlog_err() uninitialized with debug disabled. Fixed. lib: [lib] trivial: add const qualifier to stream_put/write [lib] Fix the struct message LOOKUP function to be more robust [lib/linklist] Enforce "nodes must have data" invariant more rigorously [lib] add mising UL qualifier to numerical constant [lib] pidfiles are now always created with 0644 perms instead if LOGFILE_MASK (0600) [privs/Solaris] Quagga should work in zones with IP instances [snmp-smux] Fix problems if 'smux peer ...' is issued multiple times bgpd: [bgpd] minor changes to bgp_mp_reach_parse [bgpd] bug #419: partial aspath-limit incorrectly causes session reset [bgpd] fix the set statement name [bgpd] Added new route-map set statement: "as-path ignore" [bgpd] remove unnecessary 0 entries from struct message's [bgpd] fix crash on startup if compiled IPv4-only [bgpd] Fix number of DoS security issues, restricted to configured peers. [bgpd] fixed no_set_aspath_prepend() to correctly match existing "set" statement [bgpd] Fix typo in previous commit to bgp_main.c [bgpd] small fix for crash if 'listenon' argument is not given [bgpd] Add 'listenon' argument [bgpd] Merge AS4 support [bgpd] Fix typo, which prevented advertisement of MP (non-IPv4) prefixes ospfd: [ospfd] fix missing arg to zlog_warn() [ospfd] fix minor regression in OSPF sending buffer adjustment logic ripd: [ripd] Fix mistaken empty string test [ripd] remove unnecessary 0 entries from struct message's isisd: [isisd] Bug #437: fix ssert caused by bad list management ospf6d: [ospf6d] Fix removal of defunct ASBR routes general: [c++] remove/rename some names in headers that clash with C++ reserved words [daemons] Sanity check port number arguments before use [solaris] add missing makefile.am dependency [link-detect] Improve BSD support. [link-detect] Try to get BSD link-detect to work properly. [link-detect] Static interface routes should behave properly with link-detect. [tests] BGP MP_(UN)REACH_NLRI unit tests [tests:bgp] Further tests for 0 sized as_path segments [tools] multiple-bgpd.sh: make paths more configurable - 2007-09-18: Quagga Route-Server Live
Having today been allocated a shiny, new AS-number (196614), by RIPE, we'd like to now officially announce the Quagga Route-Server and invite everyone and anyone to peer with it! We're interested in:
- Live routes, for our 'global' view
- any other "junk" routes (private, generated, etc.), for our 'test' view
- Representative BGP implementations, from common vendors
- Unusual BGP implementations, e.g. quite old or quite new versions, or rare speakers
- As many routes, with as many differing attributes, as possible
I.e. if you've got a BGP speaker on the internet, and it is likely to remain on the internet, we'd like a session with it!
Sign up today!
- 2007-09-07: Quagga 0.99.9 Released
Quagga 0.99.9 has been released, and is available, along with a full changelog, in the usual places.
Thanks to everyone who helped by reporting bugs and testing fixes.
Release notes
bgpd: Low impact DoS (Mu Security)
This release fixes two potential DoS conditions in bgpd, reported by Mu Security, where a bgpd could be crashed if a peer sent a malformed OPEN message or a malformed COMMUNITY attribute. Only configured peers can do this, hence we consider these issues to be very low impact.
bgpd: crash with outbound route-maps
This release fixes a serious regression in bgpd in Quagga 0.99.8, where use of outbound route-maps would cause a crash.
bgpd: severe performance problems with regexes
Operators should be aware that allowing untrusted access to the bgpd vty are vulnerable to such untrusted users running regex commands that may cause bgpd to block for many minutes.
To try alleviate this, bgpd now passes the 'REG_NOSUB' flag to regcomp(). This may help good regex implementations to avoid doing a lot of work when users specify substitutions (which we will never use). Unfortunately, this doesn't appear to have much of an effect on the platforms I have tested (Solaris libc and GNU libc).
The 'PCRE' regex implementation however appears to be better behaved, and does not introduce huge slow-downs when regexes with substitutions are applied. Operators who continue to offer untrusted vty access may wish to preload the 'libpcreposix' library (e.g. using LD_PRELOAD). Be aware however that PCRE is not fully compatible with POSIX extended regexes, and this workaround may adversely impact existing configurations.
bgpd: AS-Pathlimit TTL attribute support added
This attribute allows for routes to be announced with a limited scope, specified in terms of numbers of AS-hopcount. See the TeXinfo documentation for further details.
isisd: Now supports Solaris
A short-form list of code related changes:
bgpd: - [bgpd] low-impact DoS: crash on malformed community with debug set - [bgpd] bug #398 Bogus free on out route-map, and assert() with rsclients - [bgpd] Add support for AS_PATHLIMIT / draft-ietf-idr-as-pathlimit - [bgpd] cleanup, compact and consolidate capability parsing code - [bgpd] Dont schedule dumps multiple times for same command - [bgpd] Pass NOSUB to regexec ospfd: - [ospfd] Bug #331, NSSA ASBR regression - failure to set E-bit in NSSA areas - Bug #362 is fixed now. - [ospfd] Fix bad SPF calculation on some topologies - incorrect sorting zebra: - + fixed bug #400: adjusted rtread_sysctl.c:route_read() - Looks like bug #320 is finally fixed now. - Fixed ioctl_solaris.c:if_get_mtu() for IPv6'less operation - Fixed bug #394 "RTF_DONE is ignored in rtm_read()" - Merged own patch for bug #390 (rewrite zebra/zebra_rib.c:nexthop_active_update()) - Use the proper field length for the peer's address (netlink_interface_addr) - Bugzilla #384. isisd: - [isisd] Add support for Solaris DLPI
