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| author |   Hitendra Prajapati <hprajapati@mvista.com> | 2023-05-02 18:08:21 +0530 |
|---|---|---|
| committer |   Steve Sakoman <steve@sakoman.com> | 2023-05-02 05:21:11 -1000 |
| commit | 7a5d78de47cdd79bcb1b0e62a65e10705d59a7d9 (patch) | |
| tree | dd73fd11a64858c90c041654eb1a1c5dc60dcd7e | |
| parent | 392f984ffd95bcd3ce4c364b40425e7808ca7719 (diff) | |
| download | openembedded-core-7a5d78de47cdd79bcb1b0e62a65e10705d59a7d9.tar.gz | |
connman: fix CVE-2023-28488 DoS in client.c
Upstream-Status: Backport from https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=99e2c16ea1cced34a5dc450d76287a1c3e762138
Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
| -rw-r--r-- | meta/recipes-connectivity/connman/connman/CVE-2023-28488.patch | 60 | ||||
| -rw-r--r-- | meta/recipes-connectivity/connman/connman_1.41.bb | 1 |
2 files changed, 61 insertions, 0 deletions
diff --git a/meta/recipes-connectivity/connman/connman/CVE-2023-28488.patch b/meta/recipes-connectivity/connman/connman/CVE-2023-28488.patch new file mode 100644 index 0000000000..a6cabdfb20 --- /dev/null +++ b/meta/recipes-connectivity/connman/connman/CVE-2023-28488.patch @@ -0,0 +1,60 @@ +From 99e2c16ea1cced34a5dc450d76287a1c3e762138 Mon Sep 17 00:00:00 2001 +From: Daniel Wagner <wagi@monom.org> +Date: Tue, 11 Apr 2023 08:12:56 +0200 +Subject: gdhcp: Verify and sanitize packet length first + +Avoid overwriting the read packet length after the initial test. Thus +move all the length checks which depends on the total length first +and do not use the total lenght from the IP packet afterwards. + +Reported by Polina Smirnova <moe.hwr@gmail.com> + +CVE: CVE-2023-28488 +Upstream-Status: Backport [https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=99e2c16ea1cced34a5dc450d76287a1c3e762138] +Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com> +--- + gdhcp/client.c | 16 +++++++++------- + 1 file changed, 9 insertions(+), 7 deletions(-) + +diff --git a/gdhcp/client.c b/gdhcp/client.c +index 3016dfc..28fa606 100644 +--- a/gdhcp/client.c ++++ b/gdhcp/client.c +@@ -1319,9 +1319,9 @@ static bool sanity_check(struct ip_udp_dhcp_packet *packet, int bytes) + static int dhcp_recv_l2_packet(struct dhcp_packet *dhcp_pkt, int fd, + struct sockaddr_in *dst_addr) + { +- int bytes; + struct ip_udp_dhcp_packet packet; + uint16_t check; ++ int bytes, tot_len; + + memset(&packet, 0, sizeof(packet)); + +@@ -1329,15 +1329,17 @@ static int dhcp_recv_l2_packet(struct dhcp_packet *dhcp_pkt, int fd, + if (bytes < 0) + return -1; + +- if (bytes < (int) (sizeof(packet.ip) + sizeof(packet.udp))) +- return -1; +- +- if (bytes < ntohs(packet.ip.tot_len)) ++ tot_len = ntohs(packet.ip.tot_len); ++ if (bytes > tot_len) { ++ /* ignore any extra garbage bytes */ ++ bytes = tot_len; ++ } else if (bytes < tot_len) { + /* packet is bigger than sizeof(packet), we did partial read */ + return -1; ++ } + +- /* ignore any extra garbage bytes */ +- bytes = ntohs(packet.ip.tot_len); ++ if (bytes < (int) (sizeof(packet.ip) + sizeof(packet.udp))) ++ return -1; + + if (!sanity_check(&packet, bytes)) + return -1; +-- +2.25.1 + diff --git a/meta/recipes-connectivity/connman/connman_1.41.bb b/meta/recipes-connectivity/connman/connman_1.41.bb index 79542b2175..27b28be41c 100644 --- a/meta/recipes-connectivity/connman/connman_1.41.bb +++ b/meta/recipes-connectivity/connman/connman_1.41.bb @@ -8,6 +8,7 @@ SRC_URI = "${KERNELORG_MIRROR}/linux/network/${BPN}/${BP}.tar.xz \ file://CVE-2022-32293_p1.patch \ file://CVE-2022-32293_p2.patch \ file://CVE-2022-32292.patch \ + file://CVE-2023-28488.patch \ " SRC_URI:append:libc-musl = " file://0002-resolve-musl-does-not-implement-res_ninit.patch" |