diff options
Diffstat (limited to 'crypto/openssh/authfile.c')
| -rw-r--r-- | crypto/openssh/authfile.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/crypto/openssh/authfile.c b/crypto/openssh/authfile.c index 83ddd63..76a60d0 100644 --- a/crypto/openssh/authfile.c +++ b/crypto/openssh/authfile.c @@ -36,7 +36,7 @@ */ #include "includes.h" -RCSID("$OpenBSD: authfile.c,v 1.55 2003/09/18 07:56:05 markus Exp $"); +RCSID("$OpenBSD: authfile.c,v 1.57 2004/06/21 17:36:31 avsm Exp $"); #include <openssl/err.h> #include <openssl/evp.h> @@ -72,7 +72,7 @@ key_save_private_rsa1(Key *key, const char *filename, const char *passphrase, int fd, i, cipher_num; CipherContext ciphercontext; Cipher *cipher; - u_int32_t rand; + u_int32_t rnd; /* * If the passphrase is empty, use SSH_CIPHER_NONE to ease converting @@ -87,9 +87,9 @@ key_save_private_rsa1(Key *key, const char *filename, const char *passphrase, buffer_init(&buffer); /* Put checkbytes for checking passphrase validity. */ - rand = arc4random(); - buf[0] = rand & 0xff; - buf[1] = (rand >> 8) & 0xff; + rnd = arc4random(); + buf[0] = rnd & 0xff; + buf[1] = (rnd >> 8) & 0xff; buf[2] = buf[0]; buf[3] = buf[1]; buffer_append(&buffer, buf, 4); @@ -236,14 +236,16 @@ key_load_public_rsa1(int fd, const char *filename, char **commentp) struct stat st; char *cp; int i; - off_t len; + size_t len; if (fstat(fd, &st) < 0) { error("fstat for key file %.200s failed: %.100s", filename, strerror(errno)); return NULL; } - len = st.st_size; + if (st.st_size > 1*1024*1024) + close(fd); + len = (size_t)st.st_size; /* truncated */ buffer_init(&buffer); cp = buffer_append_space(&buffer, len); @@ -318,7 +320,7 @@ key_load_private_rsa1(int fd, const char *filename, const char *passphrase, char **commentp) { int i, check1, check2, cipher_type; - off_t len; + size_t len; Buffer buffer, decrypted; u_char *cp; CipherContext ciphercontext; @@ -332,7 +334,11 @@ key_load_private_rsa1(int fd, const char *filename, const char *passphrase, close(fd); return NULL; } - len = st.st_size; + if (st.st_size > 1*1024*1024) { + close(fd); + return (NULL); + } + len = (size_t)st.st_size; /* truncated */ buffer_init(&buffer); cp = buffer_append_space(&buffer, len); |
