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authorDenys Vlasenko <vda.linux@googlemail.com>2019-12-03 14:52:17 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2019-12-03 14:52:17 +0100
commit9ec836c033fc6e55e80f3309b3e05acdf09bb297 (patch)
treee6663a58c0b03d903a270c8d4c7c9a9e6b0c428e /networking
parent356f23de20b48382f5a2c5db29dc4f6dc9d10289 (diff)
downloadbusybox-9ec836c033fc6e55e80f3309b3e05acdf09bb297.tar.gz
whois: limit total length of response to 32+2 kb
function old new delta query 517 554 +37 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking')
-rw-r--r--networking/whois.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/networking/whois.c b/networking/whois.c
index 55e1de964..caa71ac51 100644
--- a/networking/whois.c
+++ b/networking/whois.c
@@ -53,7 +53,9 @@ static char *query(const char *host, int port, const char *domain)
fp = xfdopen_for_read(fd);
success = 0;
- while (fgets(linebuf, sizeof(linebuf)-1, fp)) {
+ while (bufpos < 32*1024 /* paranoia */
+ && fgets(linebuf, sizeof(linebuf)-1, fp)
+ ) {
unsigned len;
len = strcspn(linebuf, "\r\n");