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main/libssh: fix CVE-2020-16135

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This commit is contained in:
Leo 2020-09-11 01:14:24 -03:00
parent b9aebdae9a
commit 877a2f9d6c
2 changed files with 49 additions and 3 deletions
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11
main/libssh/APKBUILD
View File

@ -2,7 +2,7 @@
# Maintainer: Natanael Copa <ncopa@alpinelinux.org>
pkgname=libssh
pkgver=0.8.9
pkgrel=0
pkgrel=1
pkgdesc="Library for accessing ssh client services through C libraries"
url="http://www.libssh.org/"
arch="all"
@ -11,10 +11,14 @@ makedepends="zlib-dev openssl-dev cmake doxygen"
subpackages="$pkgname-dev"
options="!check"
source="https://www.libssh.org/files/${pkgver%.*}/libssh-$pkgver.tar.xz
fix-includes.patch"
fix-includes.patch
CVE-2020-16135.patch
"
builddir="$srcdir"/$pkgname-$pkgver
# secfixes:
# 0.8.9-r1:
# - CVE-2020-16135
# 0.8.9-r0:
# - CVE-2020-1730
# 0.8.8-r0:
@ -37,4 +41,5 @@ package() {
}
sha512sums="86ad3cfe2e494a8cb63fa4dd959b84ecc3eec5bf4935ec6b9028c2c3ddcb6c824e8fed491ea78ee6735b646cf5127befe6c781922430988d6ff137623ec403d7 libssh-0.8.9.tar.xz
055a8f6b97c65384a5a3ab8fe00c69d94cc30092fe926093dbbc122ce301fbe9d76127aa07b5e6107d7fa9dd2aad6b165fa0958b56520253b5d64428ff42a318 fix-includes.patch"
055a8f6b97c65384a5a3ab8fe00c69d94cc30092fe926093dbbc122ce301fbe9d76127aa07b5e6107d7fa9dd2aad6b165fa0958b56520253b5d64428ff42a318 fix-includes.patch
a916193b138f72f3ba7a0a7fe72ebd3815462994d4632b191b0b7f0e35ce25d28eb39ca3681b2ba6a924b5345a0c5fdce32f92d250e368f437d27383b1bd499a CVE-2020-16135.patch"

41
main/libssh/CVE-2020-16135.patch Normal file
View File

@ -0,0 +1,41 @@
From 0a9268a60f2d3748ca69bde5651f20e72761058c Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@cryptomilk.org>
Date: Wed, 3 Jun 2020 10:04:09 +0200
Subject: CVE-2020-16135: Add missing NULL check for ssh_buffer_new()
Add a missing NULL check for the pointer returned by ssh_buffer_new() in
sftpserver.c.
Thanks to Ramin Farajpour Cami for spotting this.
Fixes T232
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
(cherry picked from commit 533d881b0f4b24c72b35ecc97fa35d295d063e53)
---
src/sftpserver.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/sftpserver.c b/src/sftpserver.c
index 1717aa41..1af8a0e7 100644
--- a/src/sftpserver.c
+++ b/src/sftpserver.c
@@ -64,6 +64,12 @@ sftp_client_message sftp_get_client_message(sftp_session sftp) {
/* take a copy of the whole packet */
msg->complete_message = ssh_buffer_new();
+ if (msg->complete_message == NULL) {
+ ssh_set_error_oom(session);
+ sftp_client_message_free(msg);
+ return NULL;
+ }
+
ssh_buffer_add_data(msg->complete_message,
ssh_buffer_get(payload),
ssh_buffer_get_len(payload));
--
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