diff options
Diffstat (limited to 'meta-networking/recipes-support/wireshark/files/CVE-2023-2856.patch')
-rw-r--r-- | meta-networking/recipes-support/wireshark/files/CVE-2023-2856.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/meta-networking/recipes-support/wireshark/files/CVE-2023-2856.patch b/meta-networking/recipes-support/wireshark/files/CVE-2023-2856.patch new file mode 100644 index 0000000000..1fb75353b4 --- /dev/null +++ b/meta-networking/recipes-support/wireshark/files/CVE-2023-2856.patch @@ -0,0 +1,68 @@ +From db5135826de3a5fdb3618225c2ff02f4207012ca Mon Sep 17 00:00:00 2001 +From: Guy Harris <gharris@sonic.net> +Date: Thu, 18 May 2023 15:03:23 -0700 +Subject: [PATCH] vms: fix the search for the packet length field. + +The packet length field is of the form + + Total Length = DDD = ^xXXX + +where "DDD" is the length in decimal and "XXX" is the length in +hexadecimal. + +Search for "length ". not just "Length", as we skip past "Length ", not +just "Length", so if we assume we found "Length " but only found +"Length", we'd skip past the end of the string. + +While we're at it, fail if we don't find a length field, rather than +just blithely acting as if the packet length were zero. + +Fixes #19083. + +Upstream-Status: Backport [https://gitlab.com/wireshark/wireshark/-/commit/db5135826de3a5fdb3618225c2ff02f4207012ca] +CVE: CVE-2023-2856 +Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com> +--- + wiretap/vms.c | 9 ++++++++- + 1 file changed, 8 insertions(+), 1 deletion(-) + +diff --git a/wiretap/vms.c b/wiretap/vms.c +index 84e3def..fa77689 100644 +--- a/wiretap/vms.c ++++ b/wiretap/vms.c +@@ -310,6 +310,7 @@ parse_vms_packet(FILE_T fh, wtap_rec *rec, Buffer *buf, int *err, gchar **err_in + { + char line[VMS_LINE_LENGTH + 1]; + int num_items_scanned; ++ gboolean have_pkt_len = FALSE; + guint32 pkt_len = 0; + int pktnum; + int csec = 101; +@@ -366,7 +367,7 @@ parse_vms_packet(FILE_T fh, wtap_rec *rec, Buffer *buf, int *err, gchar **err_in + return FALSE; + } + } +- if ( (! pkt_len) && (p = strstr(line, "Length"))) { ++ if ( (! have_pkt_len) && (p = strstr(line, "Length "))) { + p += sizeof("Length "); + while (*p && ! g_ascii_isdigit(*p)) + p++; +@@ -382,9 +383,15 @@ parse_vms_packet(FILE_T fh, wtap_rec *rec, Buffer *buf, int *err, gchar **err_in + *err_info = g_strdup_printf("vms: Length field '%s' not valid", p); + return FALSE; + } ++ have_pkt_len = TRUE; + break; + } + } while (! isdumpline(line)); ++ if (! have_pkt_len) { ++ *err = WTAP_ERR_BAD_FILE; ++ *err_info = g_strdup_printf("vms: Length field not found"); ++ return FALSE; ++ } + if (pkt_len > WTAP_MAX_PACKET_SIZE_STANDARD) { + /* + * Probably a corrupt capture file; return an error, +-- +2.25.1 + |