diff options
| -rw-r--r-- | meta-networking/recipes-support/tcpdump/tcpdump/CVE-2024-2397.patch | 129 | ||||
| -rw-r--r--[-rwxr-xr-x] | meta-networking/recipes-support/tcpdump/tcpdump/run-ptest | 0 | ||||
| -rw-r--r-- | meta-networking/recipes-support/tcpdump/tcpdump_4.99.5.bb (renamed from meta-networking/recipes-support/tcpdump/tcpdump_4.99.4.bb) | 5 |
3 files changed, 2 insertions, 132 deletions
diff --git a/meta-networking/recipes-support/tcpdump/tcpdump/CVE-2024-2397.patch b/meta-networking/recipes-support/tcpdump/tcpdump/CVE-2024-2397.patch deleted file mode 100644 index 69348030bb..0000000000 --- a/meta-networking/recipes-support/tcpdump/tcpdump/CVE-2024-2397.patch +++ /dev/null | |||
| @@ -1,129 +0,0 @@ | |||
| 1 | From b9811ef5bb1b7d45a90e042f81f3aaf233c8bcb2 Mon Sep 17 00:00:00 2001 | ||
| 2 | From: Guy Harris <gharris@sonic.net> | ||
| 3 | Date: Tue, 12 Mar 2024 00:37:23 -0700 | ||
| 4 | Subject: [PATCH] ppp: use the buffer stack for the de-escaping buffer. | ||
| 5 | |||
| 6 | This both saves the buffer for freeing later and saves the packet | ||
| 7 | pointer and snapend to be restored when packet processing is complete, | ||
| 8 | even if an exception is thrown with longjmp. | ||
| 9 | |||
| 10 | This means that the hex/ASCII printing in pretty_print_packet() | ||
| 11 | processes the packet data as captured or read from the savefile, rather | ||
| 12 | than as modified by the PPP printer, so that the bounds checking is | ||
| 13 | correct. | ||
| 14 | |||
| 15 | That fixes CVE-2024-2397, which was caused by an exception being thrown | ||
| 16 | by the hex/ASCII printer (which should only happen if those routines are | ||
| 17 | called by a packet printer, not if they're called for the -X/-x/-A | ||
| 18 | flag), which jumps back to the setjmp() that surrounds the packet | ||
| 19 | printer. Hilarity^Winfinite looping ensues. | ||
| 20 | |||
| 21 | Also, restore ndo->ndo_packetp before calling the hex/ASCII printing | ||
| 22 | routine, in case nd_pop_all_packet_info() didn't restore it. | ||
| 23 | |||
| 24 | Upstream-Status: Backport [https://github.com/the-tcpdump-group/tcpdump/commit/b9811ef5bb1b7d45a90e042f81f3aaf233c8bcb2] | ||
| 25 | CVE: CVE-2024-2397 | ||
| 26 | Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com> | ||
| 27 | --- | ||
| 28 | print-ppp.c | 31 +++++++++++++++++-------------- | ||
| 29 | print.c | 8 ++++++-- | ||
| 30 | 2 files changed, 23 insertions(+), 16 deletions(-) | ||
| 31 | |||
| 32 | diff --git a/print-ppp.c b/print-ppp.c | ||
| 33 | index aba243d..e5ae064 100644 | ||
| 34 | --- a/print-ppp.c | ||
| 35 | +++ b/print-ppp.c | ||
| 36 | @@ -42,6 +42,8 @@ | ||
| 37 | #include <net/if_ppp.h> | ||
| 38 | #endif | ||
| 39 | |||
| 40 | +#include <stdlib.h> | ||
| 41 | + | ||
| 42 | #include "netdissect.h" | ||
| 43 | #include "extract.h" | ||
| 44 | #include "addrtoname.h" | ||
| 45 | @@ -1363,7 +1365,6 @@ ppp_hdlc(netdissect_options *ndo, | ||
| 46 | u_char *b, *t, c; | ||
| 47 | const u_char *s; | ||
| 48 | u_int i, proto; | ||
| 49 | - const void *sb, *se; | ||
| 50 | |||
| 51 | if (caplen == 0) | ||
| 52 | return; | ||
| 53 | @@ -1371,9 +1372,11 @@ ppp_hdlc(netdissect_options *ndo, | ||
| 54 | if (length == 0) | ||
| 55 | return; | ||
| 56 | |||
| 57 | - b = (u_char *)nd_malloc(ndo, caplen); | ||
| 58 | - if (b == NULL) | ||
| 59 | - return; | ||
| 60 | + b = (u_char *)malloc(caplen); | ||
| 61 | + if (b == NULL) { | ||
| 62 | + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, | ||
| 63 | + "%s: malloc", __func__); | ||
| 64 | + } | ||
| 65 | |||
| 66 | /* | ||
| 67 | * Unescape all the data into a temporary, private, buffer. | ||
| 68 | @@ -1394,13 +1397,15 @@ ppp_hdlc(netdissect_options *ndo, | ||
| 69 | } | ||
| 70 | |||
| 71 | /* | ||
| 72 | - * Change the end pointer, so bounds checks work. | ||
| 73 | - * Change the pointer to packet data to help debugging. | ||
| 74 | + * Switch to the output buffer for dissection, and save it | ||
| 75 | + * on the buffer stack so it can be freed; our caller must | ||
| 76 | + * pop it when done. | ||
| 77 | */ | ||
| 78 | - sb = ndo->ndo_packetp; | ||
| 79 | - se = ndo->ndo_snapend; | ||
| 80 | - ndo->ndo_packetp = b; | ||
| 81 | - ndo->ndo_snapend = t; | ||
| 82 | + if (!nd_push_buffer(ndo, b, b, (u_int)(t - b))) { | ||
| 83 | + free(b); | ||
| 84 | + (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, | ||
| 85 | + "%s: can't push buffer on buffer stack", __func__); | ||
| 86 | + } | ||
| 87 | length = ND_BYTES_AVAILABLE_AFTER(b); | ||
| 88 | |||
| 89 | /* now lets guess about the payload codepoint format */ | ||
| 90 | @@ -1442,13 +1447,11 @@ ppp_hdlc(netdissect_options *ndo, | ||
| 91 | } | ||
| 92 | |||
| 93 | cleanup: | ||
| 94 | - ndo->ndo_packetp = sb; | ||
| 95 | - ndo->ndo_snapend = se; | ||
| 96 | + nd_pop_packet_info(ndo); | ||
| 97 | return; | ||
| 98 | |||
| 99 | trunc: | ||
| 100 | - ndo->ndo_packetp = sb; | ||
| 101 | - ndo->ndo_snapend = se; | ||
| 102 | + nd_pop_packet_info(ndo); | ||
| 103 | nd_print_trunc(ndo); | ||
| 104 | } | ||
| 105 | |||
| 106 | diff --git a/print.c b/print.c | ||
| 107 | index 9c0ab86..33706b9 100644 | ||
| 108 | --- a/print.c | ||
| 109 | +++ b/print.c | ||
| 110 | @@ -431,10 +431,14 @@ pretty_print_packet(netdissect_options *ndo, const struct pcap_pkthdr *h, | ||
| 111 | nd_pop_all_packet_info(ndo); | ||
| 112 | |||
| 113 | /* | ||
| 114 | - * Restore the original snapend, as a printer might have | ||
| 115 | - * changed it. | ||
| 116 | + * Restore the originals snapend and packetp, as a printer | ||
| 117 | + * might have changed them. | ||
| 118 | + * | ||
| 119 | + * XXX - nd_pop_all_packet_info() should have restored the | ||
| 120 | + * original values, but, just in case.... | ||
| 121 | */ | ||
| 122 | ndo->ndo_snapend = sp + h->caplen; | ||
| 123 | + ndo->ndo_packetp = sp; | ||
| 124 | if (ndo->ndo_Xflag) { | ||
| 125 | /* | ||
| 126 | * Print the raw packet data in hex and ASCII. | ||
| 127 | -- | ||
| 128 | 2.25.1 | ||
| 129 | |||
diff --git a/meta-networking/recipes-support/tcpdump/tcpdump/run-ptest b/meta-networking/recipes-support/tcpdump/tcpdump/run-ptest index 2bfb2267da..2bfb2267da 100755..100644 --- a/meta-networking/recipes-support/tcpdump/tcpdump/run-ptest +++ b/meta-networking/recipes-support/tcpdump/tcpdump/run-ptest | |||
diff --git a/meta-networking/recipes-support/tcpdump/tcpdump_4.99.4.bb b/meta-networking/recipes-support/tcpdump/tcpdump_4.99.5.bb index b05b832dd8..32b869f241 100644 --- a/meta-networking/recipes-support/tcpdump/tcpdump_4.99.4.bb +++ b/meta-networking/recipes-support/tcpdump/tcpdump_4.99.5.bb | |||
| @@ -21,13 +21,12 @@ RDEPENDS:${PN}-ptest += " make perl \ | |||
| 21 | " | 21 | " |
| 22 | 22 | ||
| 23 | SRC_URI = " \ | 23 | SRC_URI = " \ |
| 24 | http://www.tcpdump.org/release/${BP}.tar.gz \ | 24 | http://www.tcpdump.org/release/${BP}.tar.xz \ |
| 25 | file://add-ptest.patch \ | 25 | file://add-ptest.patch \ |
| 26 | file://run-ptest \ | 26 | file://run-ptest \ |
| 27 | file://CVE-2024-2397.patch \ | ||
| 28 | " | 27 | " |
| 29 | 28 | ||
| 30 | SRC_URI[sha256sum] = "0232231bb2f29d6bf2426e70a08a7e0c63a0d59a9b44863b7f5e2357a6e49fea" | 29 | SRC_URI[sha256sum] = "d76395ab82d659d526291b013eee200201380930793531515abfc6e77b4f2ee5" |
| 31 | 30 | ||
| 32 | UPSTREAM_CHECK_REGEX = "tcpdump-(?P<pver>\d+(\.\d+)+)\.tar" | 31 | UPSTREAM_CHECK_REGEX = "tcpdump-(?P<pver>\d+(\.\d+)+)\.tar" |
| 33 | 32 | ||
