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irc: fix out-of-bounds read in DCC command with quoted filename (#2322)

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This commit is contained in:
aizu-m
2026-06-04 12:14:33 +05:30
committed by Sébastien Helleu
parent 75b72e7f69
commit cf2d0733d3
2 changed files with 4 additions and 3 deletions
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src/plugins/irc/irc-ctcp.c
+3 -3
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@@ -855,7 +855,7 @@ irc_ctcp_recv_dcc (struct t_irc_protocol_ctxt *ctxt, const char *arguments)
* double-quote
*/
pos = strrchr (pos_file, '"');
if (!pos || (pos == pos_file))
if (!pos || (pos == pos_file) || !pos[1])
{
weechat_printf (
ctxt->server->buffer,
@@ -1030,7 +1030,7 @@ irc_ctcp_recv_dcc (struct t_irc_protocol_ctxt *ctxt, const char *arguments)
* double-quote
*/
pos = strrchr (pos_file, '"');
if (!pos || (pos == pos_file))
if (!pos || (pos == pos_file) || !pos[1])
{
weechat_printf (
ctxt->server->buffer,
@@ -1174,7 +1174,7 @@ irc_ctcp_recv_dcc (struct t_irc_protocol_ctxt *ctxt, const char *arguments)
* double-quote
*/
pos = strrchr (pos_file, '"');
if (!pos || (pos == pos_file))
if (!pos || (pos == pos_file) || !pos[1])
{
weechat_printf (
ctxt->server->buffer,