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<patchinfo incident="3920"> <issue id="937891" tracker="bnc">VUL-0: libressl: multiple vulnerabilities</issue> <issue id="912015" tracker="bnc"></issue> <issue id="912018" tracker="bnc"></issue> <issue id="912292" tracker="bnc"></issue> <issue id="912293" tracker="bnc"></issue> <issue id="912296" tracker="bnc"></issue> <issue id="919648" tracker="bnc"></issue> <issue id="920236" tracker="bnc"></issue> <issue id="922496" tracker="bnc"></issue> <issue id="922499" tracker="bnc"></issue> <issue id="922500" tracker="bnc"></issue> <issue id="931600" tracker="bnc"></issue> <issue id="934487" tracker="bnc"></issue> <issue id="934489" tracker="bnc"></issue> <issue id="934491" tracker="bnc"></issue> <issue id="934493" tracker="bnc"></issue> <issue id="934494" tracker="bnc"></issue> <issue id="CVE-2014-3570" tracker="cve" /> <issue id="CVE-2014-3572" tracker="cve" /> <issue id="CVE-2015-1792" tracker="cve" /> <issue id="CVE-2014-8275" tracker="cve" /> <issue id="CVE-2015-0209" tracker="cve" /> <issue id="CVE-2015-1789" tracker="cve" /> <issue id="CVE-2015-1788" tracker="cve" /> <issue id="CVE-2015-1790" tracker="cve" /> <issue id="CVE-2015-0287" tracker="cve" /> <issue id="CVE-2015-0286" tracker="cve" /> <issue id="CVE-2015-0289" tracker="cve" /> <issue id="CVE-2015-0288" tracker="cve" /> <issue id="CVE-2014-8176" tracker="cve" /> <issue id="CVE-2015-4000" tracker="cve" /> <issue id="CVE-2015-0205" tracker="cve" /> <issue id="CVE-2015-0206" tracker="cve" /> <category>security</category> <rating>important</rating> <packager>jengelh</packager> <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). </description> <summary>Security update for libressl</summary> </patchinfo>
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