diff options
Diffstat (limited to 'gnu/packages/patches/libssh-CVE-2014-0017.patch')
-rw-r--r-- | gnu/packages/patches/libssh-CVE-2014-0017.patch | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/gnu/packages/patches/libssh-CVE-2014-0017.patch b/gnu/packages/patches/libssh-CVE-2014-0017.patch deleted file mode 100644 index 94d8cc33d2..0000000000 --- a/gnu/packages/patches/libssh-CVE-2014-0017.patch +++ /dev/null @@ -1,89 +0,0 @@ -Patch from libssh 0.6, with bind.c hunk adjusted for 0.5.5. - -From e99246246b4061f7e71463f8806b9dcad65affa0 Mon Sep 17 00:00:00 2001 -From: Aris Adamantiadis <aris@0xbadc0de.be> -Date: Wed, 05 Feb 2014 20:24:12 +0000 -Subject: security: fix for vulnerability CVE-2014-0017 - -When accepting a new connection, a forking server based on libssh forks -and the child process handles the request. The RAND_bytes() function of -openssl doesn't reset its state after the fork, but simply adds the -current process id (getpid) to the PRNG state, which is not guaranteed -to be unique. -This can cause several children to end up with same PRNG state which is -a security issue. ---- -diff --git a/include/libssh/wrapper.h b/include/libssh/wrapper.h -index 7374a88..e8ff32c 100644 ---- a/include/libssh/wrapper.h -+++ b/include/libssh/wrapper.h -@@ -70,5 +70,6 @@ int crypt_set_algorithms_server(ssh_session session); - struct ssh_crypto_struct *crypto_new(void); - void crypto_free(struct ssh_crypto_struct *crypto); - -+void ssh_reseed(void); - - #endif /* WRAPPER_H_ */ -diff --git a/src/bind.c b/src/bind.c -index 8d82d0d..03d3403 100644 ---- a/src/bind.c -+++ b/src/bind.c -@@ -375,6 +375,8 @@ int ssh_bind_accept(ssh_bind sshbind, ss - session->dsa_key = dsa; - session->rsa_key = rsa; - -+ /* force PRNG to change state in case we fork after ssh_bind_accept */ -+ ssh_reseed(); - return SSH_OK; - } - -diff --git a/src/libcrypto.c b/src/libcrypto.c -index bb1d96a..d8cc795 100644 ---- a/src/libcrypto.c -+++ b/src/libcrypto.c -@@ -23,6 +23,7 @@ - #include <stdlib.h> - #include <stdio.h> - #include <string.h> -+#include <sys/time.h> - - #include "libssh/priv.h" - #include "libssh/session.h" -@@ -38,6 +39,8 @@ - #include <openssl/rsa.h> - #include <openssl/hmac.h> - #include <openssl/opensslv.h> -+#include <openssl/rand.h> -+ - #ifdef HAVE_OPENSSL_AES_H - #define HAS_AES - #include <openssl/aes.h> -@@ -74,6 +77,12 @@ static int alloc_key(struct ssh_cipher_struct *cipher) { - return 0; - } - -+void ssh_reseed(void){ -+ struct timeval tv; -+ gettimeofday(&tv, NULL); -+ RAND_add(&tv, sizeof(tv), 0.0); -+} -+ - SHACTX sha1_init(void) { - SHACTX c = malloc(sizeof(*c)); - if (c == NULL) { -diff --git a/src/libgcrypt.c b/src/libgcrypt.c -index 899bccd..4617901 100644 ---- a/src/libgcrypt.c -+++ b/src/libgcrypt.c -@@ -45,6 +45,9 @@ static int alloc_key(struct ssh_cipher_struct *cipher) { - return 0; - } - -+void ssh_reseed(void){ -+ } -+ - SHACTX sha1_init(void) { - SHACTX ctx = NULL; - gcry_md_open(&ctx, GCRY_MD_SHA1, 0); --- -cgit v0.9.1 |