Mandrake Linux Security Advisory : openssl (MDKSA-2004:023)

A vulnerability was discovered by the OpenSSL group using the Codenomicon TLS Test Tool. The test uncovered a NULL pointer assignment in the dochangecipherspec function whih could be abused by a remote attacker crafting a special SSL/TLS handshake against a server that used the OpenSSL library in...

SuSE-SA:2004:007: openssl

The remote host is missing the patch for the advisory SuSE-SA:2004:007 openssl. OpenSSL is an implementation of the Secure Socket Layer SSL v2/3 and Transport Layer Security TLS v1 protocol. The NISCC informed us about to failure conditions in openssl that can be triggered to crash applications...

OpenSSL DoS

NULL pointer and uninitialized memory reference during SSL/TLS handshake...

US-CERT Technical Cyber Security Alert TA04-078A -- Multiple Vulnerabilities in OpenSSL

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Technical Cyber Security Alert TA04-078A Multiple Vulnerabilities in OpenSSL Original release date: March 18, 2004 Last revised: -- Source: US-CERT Systems Affected Applications and systems that use the OpenSSL SSL/TLS library Overview Several...

CVE-2004-0079

The dochangecipherspec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause a denial of service crash via a crafted SSL/TLS handshake that triggers a null dereference...

CVE-2004-0112

The SSL/TLS handshaking code in OpenSSL 0.9.7a, 0.9.7b, and 0.9.7c, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service crash via a crafted SSL/TLS handshake that causes an...

CVE-2004-0112

The SSL/TLS handshaking code in OpenSSL 0.9.7a, 0.9.7b, and 0.9.7c, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service crash via a crafted SSL/TLS handshake that causes an...

Important: Red Hat Security Advisory: openssl security update

Updated OpenSSL packages that fix several remote denial of service vulnerabilities are available for Red Hat Enterprise Linux 3. The OpenSSL toolkit implements Secure Sockets Layer SSL v2/v3, Transport Layer Security TLS v1 protocols, and serves as a full-strength general purpose cryptography...

Vulnerability in OpenSSL CVE-2004-0112

A flaw in SSL/TLS handshaking code when using Kerberos ciphersuites. A remote attacker could perform a carefully crafted SSL/TLS handshake against a server configured to use Kerberos ciphersuites in such a way as to cause OpenSSL to crash. Most applications have no ability to use Kerberos...

DSA-394 openssl095 - ASN.1 parsing vulnerability

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OpenSSL ASN.1 parser insecure memory deallocation

Overview A vulnerability in the way OpenSSL deallocates memory used to store ASN.1 structures could allow a remote attacker to execute arbitrary code with the privileges of the process using the OpenSSL library. Description OpenSSL implements the Secure Sockets Layer SSL and Transport Layer...

SSL/TLS implementations disclose side channel information via PKCS #1 v1.5 version number extension

Overview SSL/TLS implementations that respond distinctively to an incorrect PKCS 1 v1.5 encoded SSL/TLS version number expose the premaster secret to a modified Bleichenbacher attack. An attacker could decrypt a given SSL/TLS session or forge a signature on behalf of a vulnerable application's...

CVE-2003-0131

The SSL and TLS components for OpenSSL 0.9.6i and earlier, 0.9.7, and 0.9.7a allow remote attackers to perform an unauthorized RSA private key operation via a modified Bleichenbacher attack that uses a large number of SSL or TLS connections using PKCS 1 v1.5 padding that cause OpenSSL to leak...

CVE-2003-0131

The SSL and TLS components for OpenSSL 0.9.6i and earlier, 0.9.7, and 0.9.7a allow remote attackers to perform an unauthorized RSA private key operation via a modified Bleichenbacher attack that uses a large number of SSL or TLS connections using PKCS 1 v1.5 padding that cause OpenSSL to leak...

CVE-2003-0131

The SSL and TLS components for OpenSSL 0.9.6i and earlier, 0.9.7, and 0.9.7a allow remote attackers to perform an unauthorized RSA private key operation via a modified Bleichenbacher attack that uses a large number of SSL or TLS connections using PKCS 1 v1.5 padding that cause OpenSSL to leak...

[OpenSSL Advisory] Klima-Pokorny-Rosa attack on PKCS #1 v1.5 padding

OpenSSL Security Advisory 19 March 2003 Klima-Pokorny-Rosa attack on RSA in SSL/TLS =========================================== Czech cryptologists Vlastimil Klima, Ondrej Pokorny, and Tomas Rosa have come up with an extension of the "Bleichenbacher attack" on RSA with PKCS 1 v1.5 padding as used...

Vulnerability in OpenSSL CVE-2003-0131

The SSL and TLS components allowed remote attackers to perform an unauthorized RSA private key operation via a modified Bleichenbacher attack that uses a large number of SSL or TLS connections using PKCS 1 v1.5 padding that caused OpenSSL to leak information regarding the relationship between...

FreeBSD-SA-03:02.openssl

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-03:02.openssl Security Advisory The FreeBSD Project Topic: OpenSSL timing-based SSL/TLS attack Category: core Module: openssl Announced: 2003-02-25 Credits: Brice...

DSA-253 openssl - information leak

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OpenSSL 0.9.7a and 0.9.6i released

From the changelog: Security fix: Vaudenay timing attack on CBC + In ssl3getrecord ssl/s3pkt.c, minimize information leaked + via timing by performing a MAC computation even if incorrrect + block cipher padding has been found. This is a countermeasure + against active attacks where the attacker h...