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BUG/MINOR: ssl: fix a trash buffer leak in some error cases

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Fix a trash buffer leak when we can't take the lock of the ckch, or when
"set ssl cert" is wrongly used.

The bug was mentionned in this thread:
https://www.mail-archive.com/haproxy@formilux.org/msg37539.html

The bug was introduced by commit bc6ca7c ("MINOR: ssl/cli: rework 'set
ssl cert' as 'set/commit'").

Must be backported in 2.1.
This commit is contained in:
William Lallemand 2020-06-08 09:40:37 +02:00 committed by William Lallemand
parent 0041741ef7
commit e5ff4addb2
1 changed files with 3 additions and 3 deletions
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6
src/ssl_ckch.c
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@ -1552,9 +1552,6 @@ static int cli_parse_set_cert(char **args, char *payload, struct appctx *appctx,
if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
return 1; return 1;
if ((buf = alloc_trash_chunk()) == NULL)
return cli_err(appctx, "Can't allocate memory\n");
if (!*args[3] || !payload) if (!*args[3] || !payload)
return cli_err(appctx, "'set ssl cert expects a filename and a certificate as a payload\n"); return cli_err(appctx, "'set ssl cert expects a filename and a certificate as a payload\n");
@ -1563,6 +1560,9 @@ static int cli_parse_set_cert(char **args, char *payload, struct appctx *appctx,
if (HA_SPIN_TRYLOCK(CKCH_LOCK, &ckch_lock)) if (HA_SPIN_TRYLOCK(CKCH_LOCK, &ckch_lock))
return cli_err(appctx, "Can't update the certificate!\nOperations on certificates are currently locked!\n"); return cli_err(appctx, "Can't update the certificate!\nOperations on certificates are currently locked!\n");
if ((buf = alloc_trash_chunk()) == NULL)
return cli_err(appctx, "Can't allocate memory\n");
if (!chunk_strcpy(buf, args[3])) { if (!chunk_strcpy(buf, args[3])) {
memprintf(&err, "%sCan't allocate memory\n", err ? err : ""); memprintf(&err, "%sCan't allocate memory\n", err ? err : "");
errcode |= ERR_ALERT | ERR_FATAL; errcode |= ERR_ALERT | ERR_FATAL;