openSUSE Security Update : libressl (openSUSE-2015-507) (Logjam)

High Nessus Plugin ID 84998

Synopsis

The remote openSUSE host is missing a security update.

Description

libressl was updated to version 2.2.1 to fix 16 security issues.

LibreSSL is a fork of OpenSSL. Because of that CVEs affecting OpenSSL often also affect LibreSSL.

These security issues were fixed :

- CVE-2014-3570: The BN_sqr implementation in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k did not properly calculate the square of a BIGNUM value, which might make it easier for remote attackers to defeat cryptographic protection mechanisms via unspecified vectors, related to crypto/bn/asm/mips.pl, crypto/bn/asm/x86_64-gcc.c, and crypto/bn/bn_asm.c (bsc#912296).

- CVE-2014-3572: The ssl3_get_key_exchange function in s3_clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allowed remote SSL servers to conduct ECDHE-to-ECDH downgrade attacks and trigger a loss of forward secrecy by omitting the ServerKeyExchange message (bsc#912015).

- CVE-2015-1792: The do_free_upto function in crypto/cms/cms_smime.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allowed remote attackers to cause a denial of service (infinite loop) via vectors that trigger a NULL value of a BIO data structure, as demonstrated by an unrecognized X.660 OID for a hash function (bsc#934493).

- CVE-2014-8275: OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k did not enforce certain constraints on certificate data, which allowed remote attackers to defeat a fingerprint-based certificate-blacklist protection mechanism by including crafted data within a certificate's unsigned portion, related to crypto/asn1/a_verify.c, crypto/dsa/dsa_asn1.c, crypto/ecdsa/ecs_vrf.c, and crypto/x509/x_all.c (bsc#912018).

- CVE-2015-0209: Use-after-free vulnerability in the d2i_ECPrivateKey function in crypto/ec/ec_asn1.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a might allowed remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via a malformed Elliptic Curve (EC) private-key file that is improperly handled during import (bsc#919648).

- CVE-2015-1789: The X509_cmp_time function in crypto/x509/x509_vfy.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allowed remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted length field in ASN1_TIME data, as demonstrated by an attack against a server that supports client authentication with a custom verification callback (bsc#934489).

- CVE-2015-1788: The BN_GF2m_mod_inv function in crypto/bn/bn_gf2m.c in OpenSSL before 0.9.8s, 1.0.0 before 1.0.0e, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b did not properly handle ECParameters structures in which the curve is over a malformed binary polynomial field, which allowed remote attackers to cause a denial of service (infinite loop) via a session that used an Elliptic Curve algorithm, as demonstrated by an attack against a server that supports client authentication (bsc#934487).

- CVE-2015-1790: The PKCS7_dataDecodefunction in crypto/pkcs7/pk7_doit.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allowed remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a PKCS#7 blob that used ASN.1 encoding and lacks inner EncryptedContent data (bsc#934491).

- CVE-2015-0287: The ASN1_item_ex_d2i function in crypto/asn1/tasn_dec.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a did not reinitialize CHOICE and ADB data structures, which might allowed attackers to cause a denial of service (invalid write operation and memory corruption) by leveraging an application that relies on ASN.1 structure reuse (bsc#922499).

- CVE-2015-0286: The ASN1_TYPE_cmp function in crypto/asn1/a_type.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a did not properly perform boolean-type comparisons, which allowed remote attackers to cause a denial of service (invalid read operation and application crash) via a crafted X.509 certificate to an endpoint that used the certificate-verification feature (bsc#922496).

- CVE-2015-0289: The PKCS#7 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a did not properly handle a lack of outer ContentInfo, which allowed attackers to cause a denial of service (NULL pointer dereference and application crash) by leveraging an application that processes arbitrary PKCS#7 data and providing malformed data with ASN.1 encoding, related to crypto/pkcs7/pk7_doit.c and crypto/pkcs7/pk7_lib.c (bsc#922500).

- CVE-2015-0288: The X509_to_X509_REQ function in crypto/x509/x509_req.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a might allowed attackers to cause a denial of service (NULL pointer dereference and application crash) via an invalid certificate key (bsc#920236).

- CVE-2014-8176: The dtls1_clear_queues function in ssl/d1_lib.c in OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h frees data structures without considering that application data can arrive between a ChangeCipherSpec message and a Finished message, which allowed remote DTLS peers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via unexpected application data (bsc#934494).

- CVE-2015-4000: The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, did not properly convey a DHE_EXPORT choice, which allowed man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the 'Logjam' issue (bsc#931600).

- CVE-2015-0205: The ssl3_get_cert_verify function in s3_srvr.c in OpenSSL 1.0.0 before 1.0.0p and 1.0.1 before 1.0.1k accepts client authentication with a Diffie-Hellman (DH) certificate without requiring a CertificateVerify message, which allowed remote attackers to obtain access without knowledge of a private key via crafted TLS Handshake Protocol traffic to a server that recognizes a Certification Authority with DH support (bsc#912293).

- CVE-2015-0206: Memory leak in the dtls1_buffer_record function in d1_pkt.c in OpenSSL 1.0.0 before 1.0.0p and 1.0.1 before 1.0.1k allowed remote attackers to cause a denial of service (memory consumption) by sending many duplicate records for the next epoch, leading to failure of replay detection (bsc#912292).

Solution

Update the affected libressl packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=912015

https://bugzilla.opensuse.org/show_bug.cgi?id=912018

https://bugzilla.opensuse.org/show_bug.cgi?id=912292

https://bugzilla.opensuse.org/show_bug.cgi?id=912293

https://bugzilla.opensuse.org/show_bug.cgi?id=912296

https://bugzilla.opensuse.org/show_bug.cgi?id=919648

https://bugzilla.opensuse.org/show_bug.cgi?id=920236

https://bugzilla.opensuse.org/show_bug.cgi?id=922496

https://bugzilla.opensuse.org/show_bug.cgi?id=922499

https://bugzilla.opensuse.org/show_bug.cgi?id=922500

https://bugzilla.opensuse.org/show_bug.cgi?id=931600

https://bugzilla.opensuse.org/show_bug.cgi?id=934487

https://bugzilla.opensuse.org/show_bug.cgi?id=934489

https://bugzilla.opensuse.org/show_bug.cgi?id=934491

https://bugzilla.opensuse.org/show_bug.cgi?id=934493

https://bugzilla.opensuse.org/show_bug.cgi?id=934494

https://bugzilla.opensuse.org/show_bug.cgi?id=937891

Plugin Details

Severity: High

ID: 84998

File Name: openSUSE-2015-507.nasl

Version: Revision: 2.5

Type: local

Agent: unix

Published: 2015/07/27

Updated: 2016/10/13

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:libcrypto34, p-cpe:/a:novell:opensuse:libcrypto34-32bit, p-cpe:/a:novell:opensuse:libcrypto34-debuginfo, p-cpe:/a:novell:opensuse:libcrypto34-debuginfo-32bit, p-cpe:/a:novell:opensuse:libressl, p-cpe:/a:novell:opensuse:libressl-debuginfo, p-cpe:/a:novell:opensuse:libressl-debugsource, p-cpe:/a:novell:opensuse:libressl-devel, p-cpe:/a:novell:opensuse:libressl-devel-32bit, p-cpe:/a:novell:opensuse:libssl33, p-cpe:/a:novell:opensuse:libssl33-32bit, p-cpe:/a:novell:opensuse:libssl33-debuginfo, p-cpe:/a:novell:opensuse:libssl33-debuginfo-32bit, p-cpe:/a:novell:opensuse:libtls4, p-cpe:/a:novell:opensuse:libtls4-32bit, p-cpe:/a:novell:opensuse:libtls4-debuginfo, p-cpe:/a:novell:opensuse:libtls4-debuginfo-32bit, cpe:/o:novell:opensuse:13.2

Patch Publication Date: 2015/07/15

Reference Information

CVE: CVE-2014-3570, CVE-2014-3572, CVE-2014-8176, CVE-2014-8275, CVE-2015-0205, CVE-2015-0206, CVE-2015-0209, CVE-2015-0286, CVE-2015-0287, CVE-2015-0288, CVE-2015-0289, CVE-2015-1788, CVE-2015-1789, CVE-2015-1790, CVE-2015-1792, CVE-2015-4000