From patchwork Fri Dec 9 06:11:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manoj Saun X-Patchwork-Id: 16569 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 615BEC4332F for ; Fri, 9 Dec 2022 06:12:47 +0000 (UTC) Received: from mx0a-0064b401.pphosted.com (mx0a-0064b401.pphosted.com [205.220.166.238]) by mx.groups.io with SMTP id smtpd.web11.6215.1670566362172181376 for ; Thu, 08 Dec 2022 22:12:42 -0800 Authentication-Results: mx.groups.io; dkim=pass header.i=@windriver.com header.s=pps06212021 header.b=Ci3oSq33; spf=permerror, err=parse error for token &{10 18 %{ir}.%{v}.%{d}.spf.has.pphosted.com}: invalid domain name (domain: windriver.com, ip: 205.220.166.238, mailfrom: prvs=9342a40bf4=manojsingh.saun@windriver.com) Received: from pps.filterd (m0250809.ppops.net [127.0.0.1]) by mx0a-0064b401.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2B95vi6O005836 for ; Thu, 8 Dec 2022 22:12:41 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=windriver.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=PPS06212021; bh=qi+5HTaBkmVyIvSP/TJo9JOM3+DGX4O5QhD2Z/3YbsA=; b=Ci3oSq33K73cN5GFGhjPAjFRh9HUQUhP2vaarpISB2I6gkrg440+eRKUk0OkPCAw1Kff AXS3InZhU3+fqGjKWJKOAj+hn7AymzmFm9wPXm41Xmc1fQcKvvEUIGZwNeyVBrKAlXnI YDUr7y9Ou0UuOF36jPcdMfOR5rUIN9WmiluJ/VW7yqjdOKXAlncP1z3hdtcmJMwqa9V9 4t1xC7h9XIpxoKBfq4Tt3p1MqerX8hDuNmoNjGJcmapWfarB83jZuR8V0Qn8hk44k6gP YhZi1RIZbCp302qH7OdxyWwZuS8WhFos7IbgNvdByKsSf+h/nAGYAxRgvAPtR7fhv7ya fg== Received: from ala-exchng01.corp.ad.wrs.com (unknown-82-252.windriver.com [147.11.82.252]) by mx0a-0064b401.pphosted.com (PPS) with ESMTPS id 3m86uqvxb0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 08 Dec 2022 22:12:41 -0800 Received: from ALA-EXCHNG02.corp.ad.wrs.com (147.11.82.254) by ala-exchng01.corp.ad.wrs.com (147.11.82.252) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2242.12; Thu, 8 Dec 2022 22:12:40 -0800 Received: from blr-linux-engg1.wrs.com (147.11.136.210) by ALA-EXCHNG02.corp.ad.wrs.com (147.11.82.254) with Microsoft SMTP Server id 15.1.2308.27 via Frontend Transport; Thu, 8 Dec 2022 22:12:38 -0800 From: Manoj Saun To: CC: , , , Manoj Saun Subject: [meta-core][PATCH 1/1] libksba: fix CVE-2022-3515 Date: Fri, 9 Dec 2022 06:11:30 +0000 Message-ID: <20221209061130.3794053-1-manojsingh.saun@windriver.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: oKj55s4Iv8nAj-D_LmGAjkHN61jKT2yf X-Proofpoint-GUID: oKj55s4Iv8nAj-D_LmGAjkHN61jKT2yf X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-09_02,2022-12-08_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 impostorscore=0 phishscore=0 lowpriorityscore=0 clxscore=1015 suspectscore=0 mlxscore=0 bulkscore=0 mlxlogscore=999 priorityscore=1501 adultscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2212090053 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Fri, 09 Dec 2022 06:12:47 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/174430 libksba: integer overflow may lead to remote code execution. Reference: https://www.gnupg.org/blog/20221017-pepe-left-the-ksba.html Upstream-Status: Backport [https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=4b7d9cd4a018898d7714ce06f3faf2626c14582b] CVE: CVE-2022-3515 Signed-off-by: Manoj Saun --- ...e-overflow-directly-in-the-TLV-parse.patch | 42 +++++++++++++++++++ meta/recipes-support/libksba/libksba_1.6.2.bb | 3 +- 2 files changed, 44 insertions(+), 1 deletion(-) create mode 100644 meta/recipes-support/libksba/libksba/0001-Detect-a-possible-overflow-directly-in-the-TLV-parse.patch diff --git a/meta/recipes-support/libksba/libksba/0001-Detect-a-possible-overflow-directly-in-the-TLV-parse.patch b/meta/recipes-support/libksba/libksba/0001-Detect-a-possible-overflow-directly-in-the-TLV-parse.patch new file mode 100644 index 0000000000..e2cb842a4d --- /dev/null +++ b/meta/recipes-support/libksba/libksba/0001-Detect-a-possible-overflow-directly-in-the-TLV-parse.patch @@ -0,0 +1,42 @@ +From 4b7d9cd4a018898d7714ce06f3faf2626c14582b Mon Sep 17 00:00:00 2001 +From: Werner Koch +Date: Wed, 5 Oct 2022 14:19:06 +0200 +Subject: [PATCH] Detect a possible overflow directly in the TLV parser. + +* src/ber-help.c (_ksba_ber_read_tl): Check for overflow of a commonly +used sum. +-- + +It is quite common to have checks like + + if (ti.nhdr + ti.length >= DIM(tmpbuf)) + return gpg_error (GPG_ERR_TOO_LARGE); + +This patch detects possible integer overflows immmediately when +creating the TI object. + +Reported-by: ZDI-CAN-18927, ZDI-CAN-18928, ZDI-CAN-18929 +--- + src/ber-help.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/src/ber-help.c b/src/ber-help.c +index 81c31ed..56efb6a 100644 +--- a/src/ber-help.c ++++ b/src/ber-help.c +@@ -182,6 +182,12 @@ _ksba_ber_read_tl (ksba_reader_t reader, struct tag_info *ti) + ti->length = len; + } + ++ if (ti->length > ti->nhdr && (ti->nhdr + ti->length) < ti->length) ++ { ++ ti->err_string = "header+length would overflow"; ++ return gpg_error (GPG_ERR_EOVERFLOW); ++ } ++ + /* Without this kludge some example certs can't be parsed */ + if (ti->class == CLASS_UNIVERSAL && !ti->tag) + ti->length = 0; +-- +2.34.1 + diff --git a/meta/recipes-support/libksba/libksba_1.6.2.bb b/meta/recipes-support/libksba/libksba_1.6.2.bb index f6ecb9aec4..c25c23ef0f 100644 --- a/meta/recipes-support/libksba/libksba_1.6.2.bb +++ b/meta/recipes-support/libksba/libksba_1.6.2.bb @@ -22,7 +22,8 @@ inherit autotools binconfig-disabled pkgconfig texinfo UPSTREAM_CHECK_URI = "https://gnupg.org/download/index.html" SRC_URI = "${GNUPG_MIRROR}/${BPN}/${BPN}-${PV}.tar.bz2 \ - file://ksba-add-pkgconfig-support.patch" + file://ksba-add-pkgconfig-support.patch \ + file://0001-Detect-a-possible-overflow-directly-in-the-TLV-parse.patch" SRC_URI[sha256sum] = "fce01ccac59812bddadffacff017dac2e4762bdb6ebc6ffe06f6ed4f6192c971"