diff options
| -rw-r--r-- | changes/cid_428 | 5 | ||||
| -rw-r--r-- | src/or/connection.c | 8 |
2 files changed, 12 insertions, 1 deletions
diff --git a/changes/cid_428 b/changes/cid_428 new file mode 100644 index 0000000000..cb0fc8c2b2 --- /dev/null +++ b/changes/cid_428 @@ -0,0 +1,5 @@ + o Minor bugfixes: + - Always NUL-terminate the sun_path field of a sockaddr_un before + passing it to the kernel. (Not a security issue: kernels are + smart enough to reject bad sockaddr_uns.) Found by Coverity; CID + # 428. Bugfix on Tor 0.2.0.3-alpha. diff --git a/src/or/connection.c b/src/or/connection.c index 4869a2439a..2897fe10a1 100644 --- a/src/or/connection.c +++ b/src/or/connection.c @@ -804,7 +804,13 @@ create_unix_sockaddr(const char *listenaddress, char **readable_address, sockaddr = tor_malloc_zero(sizeof(struct sockaddr_un)); sockaddr->sun_family = AF_UNIX; - strncpy(sockaddr->sun_path, listenaddress, sizeof(sockaddr->sun_path)); + if (strlcpy(sockaddr->sun_path, listenaddress, sizeof(sockaddr->sun_path)) + >= sizeof(sockaddr->sun_path)) { + log_warn(LD_CONFIG, "Unix socket path '%s' is too long to fit.", + escaped(listenaddress)); + tor_free(sockaddr); + return NULL; + } if (readable_address) *readable_address = tor_strdup(listenaddress); |