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CVE-2011-4619

Status Candidate

Overview

The Server Gated Cryptography (SGC) implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly handle handshake restarts, which allows remote attackers to cause a denial of service (CPU consumption) via unspecified vectors.

Related Files

HP Security Bulletin HPSBMU02786 SSRT100877 2
Posted May 9, 2013
Authored by HP | Site hp.com

HP Security Bulletin HPSBMU02786 SSRT100877 2 - Potential security vulnerabilities have been identified with HP System Management Homepage (SMH) running on Linux, Windows, and VMware ESX. The vulnerabilities could be exploited remotely resulting in unauthorized access, disclosure of information, data modification, Denial of Service (DoS), and execution of arbitrary code. Revision 2 of this advisory.

tags | advisory, denial of service, arbitrary, vulnerability
systems | linux, windows
advisories | CVE-2011-1944, CVE-2011-2821, CVE-2011-2834, CVE-2011-3379, CVE-2011-3607, CVE-2011-4078, CVE-2011-4108, CVE-2011-4153, CVE-2011-4317, CVE-2011-4415, CVE-2011-4576, CVE-2011-4577, CVE-2011-4619, CVE-2011-4885, CVE-2012-0021, CVE-2012-0027, CVE-2012-0031, CVE-2012-0036, CVE-2012-0053, CVE-2012-0057, CVE-2012-0830, CVE-2012-1165, CVE-2012-1823, CVE-2012-2012, CVE-2012-2013, CVE-2012-2014, CVE-2012-2015, CVE-2012-2016
MD5 | 80f8158182e481b6569a26d38a63761b
Red Hat Security Advisory 2012-1308-01
Posted Sep 25, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1308-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength, general purpose cryptography library. Multiple numeric conversion errors, leading to a buffer overflow, were found in the way OpenSSL parsed ASN.1 data from BIO inputs. Specially-crafted DER encoded data read from a file or other BIO input could cause an application using the OpenSSL library to crash or, potentially, execute arbitrary code.

tags | advisory, overflow, arbitrary, protocol
systems | linux, redhat
advisories | CVE-2011-4108, CVE-2011-4109, CVE-2011-4576, CVE-2011-4619, CVE-2012-0884, CVE-2012-1165, CVE-2012-2110, CVE-2012-2333
MD5 | 51dbf701e39ed15c241ad46a2f38ef39
Red Hat Security Advisory 2012-1306-01
Posted Sep 25, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1306-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength, general purpose cryptography library. Multiple numeric conversion errors, leading to a buffer overflow, were found in the way OpenSSL parsed ASN.1 data from BIO inputs. Specially-crafted DER encoded data read from a file or other BIO input could cause an application using the OpenSSL library to crash or, potentially, execute arbitrary code.

tags | advisory, overflow, arbitrary, protocol
systems | linux, redhat
advisories | CVE-2011-4108, CVE-2011-4109, CVE-2011-4576, CVE-2011-4619, CVE-2012-0884, CVE-2012-1165, CVE-2012-2110, CVE-2012-2333
MD5 | 9888e063558b74256e16cd8a05959fba
Red Hat Security Advisory 2012-1307-01
Posted Sep 25, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1307-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength, general purpose cryptography library. Multiple numeric conversion errors, leading to a buffer overflow, were found in the way OpenSSL parsed ASN.1 data from BIO inputs. Specially-crafted DER encoded data read from a file or other BIO input could cause an application using the OpenSSL library to crash or, potentially, execute arbitrary code.

tags | advisory, overflow, arbitrary, protocol
systems | linux, redhat
advisories | CVE-2011-4108, CVE-2011-4109, CVE-2011-4576, CVE-2011-4619, CVE-2012-0884, CVE-2012-1165, CVE-2012-2110, CVE-2012-2333
MD5 | 8cadf8e13718b11a41fc37708b419aa3
HP Security Bulletin HPSBMU02786 SSRT100877
Posted Jun 28, 2012
Authored by HP | Site hp.com

HP Security Bulletin HPSBMU02786 SSRT100877 - Potential security vulnerabilities have been identified with HP System Management Homepage (SMH) running on Linux and Windows. The vulnerabilities could be exploited remotely resulting in unauthorized access, disclosure of information, data modification, Denial of Service (DoS), and execution of arbitrary code. Revision 1 of this advisory.

tags | advisory, denial of service, arbitrary, vulnerability
systems | linux, windows
advisories | CVE-2011-1944, CVE-2011-2821, CVE-2011-2834, CVE-2011-3379, CVE-2011-3607, CVE-2011-4078, CVE-2011-4108, CVE-2011-4153, CVE-2011-4317, CVE-2011-4415, CVE-2011-4576, CVE-2011-4577, CVE-2011-4619, CVE-2011-4885, CVE-2012-0021, CVE-2012-0027, CVE-2012-0031, CVE-2012-0036, CVE-2012-0053, CVE-2012-0057, CVE-2012-0830, CVE-2012-1165, CVE-2012-1823, CVE-2012-2012, CVE-2012-2013, CVE-2012-2014, CVE-2012-2015, CVE-2012-2016
MD5 | 31d29fe7aaae474acd1185e3d5e9e226
HP Security Bulletin HPSBOV02793 SSRT100891
Posted Jun 23, 2012
Authored by HP | Site hp.com

HP Security Bulletin HPSBOV02793 SSRT100891 - Potential security vulnerabilities have been identified with HP OpenVMS running SSL. The vulnerabilities could be remotely exploited to cause a Denial of Service (DoS) or to gain unauthorized access. Revision 1 of this advisory.

tags | advisory, denial of service, vulnerability
advisories | CVE-2011-4108, CVE-2011-4109, CVE-2011-4576, CVE-2011-4577, CVE-2011-4619, CVE-2012-0050, CVE-2012-0884, CVE-2012-1165, CVE-2012-2110, CVE-2012-2131
MD5 | eacb8010f09a7a1c3c8779c2c97eb599
HP Security Bulletin HPSBMU02776 SSRT100852
Posted Jun 12, 2012
Authored by HP | Site hp.com

HP Security Bulletin HPSBMU02776 SSRT100852 - Potential security vulnerabilities have been identified with HP Onboard Administrator (OA). The vulnerabilities could be exploited remotely resulting in unauthorized access to data, unauthorized disclosure of information, and Denial of Service (DoS). Revision 1 of this advisory.

tags | advisory, denial of service, vulnerability
advisories | CVE-2011-1473, CVE-2011-2691, CVE-2011-3192, CVE-2011-4108, CVE-2011-4576, CVE-2011-4619, CVE-2012-0050, CVE-2012-0053, CVE-2012-0884, CVE-2012-1583, CVE-2012-2110
MD5 | e586982a7e6c33e479a4d3923b9eab86
HP Security Bulletin HPSBUX02782 SSRT100844
Posted May 18, 2012
Authored by HP | Site hp.com

HP Security Bulletin HPSBUX02782 SSRT100844 - A potential security vulnerability has been identified with HP-UX OpenSSL. This vulnerability could be exploited remotely to create a Denial of Service (DoS). Revision 1 of this advisory.

tags | advisory, denial of service
systems | hpux
advisories | CVE-2006-7250, CVE-2011-4619, CVE-2012-0884, CVE-2012-1165, CVE-2012-2110, CVE-2012-2131
MD5 | f23ea343ef5eb1f9a81d52598057e863
FreeBSD Security Advisory - OpenSSL
Posted May 3, 2012
Site security.freebsd.org

FreeBSD Security Advisory - OpenSSL fails to clear the bytes used as block cipher padding in SSL 3.0 records when operating as a client or a server that accept SSL 3.0 handshakes. As a result, in each record, up to 15 bytes of uninitialized memory may be sent, encrypted, to the SSL peer. This could include sensitive contents of previously freed memory. OpenSSL support for handshake restarts for server gated cryptography (SGC) can be used in a denial-of-service attack. Various other OpenSSL issues have also been addressed.

tags | advisory
systems | freebsd
advisories | CVE-2011-4576, CVE-2011-4619, CVE-2011-4109, CVE-2012-0884, CVE-2012-2110
MD5 | 7bb6fa53ebc04c577e47228a696aaba5
Gentoo Linux Security Advisory 201203-12
Posted Mar 6, 2012
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201203-12 - Multiple vulnerabilities have been found in OpenSSL, allowing remote attackers to cause a Denial of Service or obtain sensitive information. Versions less than 1.0.0g are affected.

tags | advisory, remote, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2011-4108, CVE-2011-4109, CVE-2011-4576, CVE-2011-4577, CVE-2011-4619, CVE-2012-0027, CVE-2012-0050
MD5 | 5a96b5a5c58e821de757d3125af91819
Red Hat Security Advisory 2012-0168-01
Posted Feb 21, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0168-01 - The rhev-hypervisor5 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. A heap overflow flaw was found in the way QEMU-KVM emulated the e1000 network interface card. A privileged guest user in a virtual machine whose network interface is configured to use the e1000 emulated driver could use this flaw to crash the host or, possibly, escalate their privileges on the host.

tags | advisory, overflow
systems | linux, redhat
advisories | CVE-2011-4109, CVE-2011-4576, CVE-2011-4619, CVE-2012-0029, CVE-2012-0207
MD5 | 74fef7fccdc4b73b3a72b2d4867c68aa
Red Hat Security Advisory 2012-0109-01
Posted Feb 15, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0109-01 - The rhev-hypervisor6 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. A heap overflow flaw was found in the way QEMU-KVM emulated the e1000 network interface card. A privileged guest user in a virtual machine whose network interface is configured to use the e1000 emulated driver could use this flaw to crash the host or, possibly, escalate their privileges on the host.

tags | advisory, overflow, kernel
systems | linux, redhat
advisories | CVE-2011-4576, CVE-2011-4577, CVE-2011-4619, CVE-2012-0029
MD5 | a49711ee8164556645fd5fe183fa93d1
Ubuntu Security Notice USN-1357-1
Posted Feb 10, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1357-1 - It was discovered that the elliptic curve cryptography (ECC) subsystem in OpenSSL, when using the Elliptic Curve Digital Signature Algorithm (ECDSA) for the ECDHE_ECDSA cipher suite, did not properly implement curves over binary fields. This could allow an attacker to determine private keys via a timing attack. This issue only affected Ubuntu 8.04 LTS, Ubuntu 10.04 LTS, Ubuntu 10.10 and Ubuntu 11.04. Adam Langley discovered that the ephemeral Elliptic Curve Diffie-Hellman (ECDH) functionality in OpenSSL did not ensure thread safety while processing handshake messages from clients. This could allow a remote attacker to cause a denial of service via out-of-order messages that violate the TLS protocol. This issue only affected Ubuntu 8.04 LTS, Ubuntu 10.04 LTS, Ubuntu 10.10 and Ubuntu 11.04. Various other issues were also addressed.

tags | advisory, remote, denial of service, protocol
systems | linux, ubuntu
advisories | CVE-2011-1945, CVE-2011-3210, CVE-2011-4108, CVE-2011-4108, CVE-2012-0050, CVE-2011-4109, CVE-2011-4354, CVE-2011-4576, CVE-2011-4577, CVE-2011-4619, CVE-2012-0027, CVE-2011-1945, CVE-2011-3210, CVE-2011-4108, CVE-2011-4109, CVE-2011-4354, CVE-2011-4576, CVE-2011-4577, CVE-2011-4619, CVE-2012-0027, CVE-2012-0050
MD5 | cb9906382e5228bc3514db5a3b873c3a
Red Hat Security Advisory 2012-0086-01
Posted Feb 2, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0086-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength, general purpose cryptography library. An information leak flaw was found in the SSL 3.0 protocol implementation in OpenSSL. Incorrect initialization of SSL record padding bytes could cause an SSL client or server to send a limited amount of possibly sensitive data to its SSL peer via the encrypted connection. It was discovered that OpenSSL did not limit the number of TLS/SSL handshake restarts required to support Server Gated Cryptography. A remote attacker could use this flaw to make a TLS/SSL server using OpenSSL consume an excessive amount of CPU by continuously restarting the handshake.

tags | advisory, remote, protocol
systems | linux, redhat
advisories | CVE-2011-4576, CVE-2011-4619
MD5 | c346476ef6a5408c6965d839e6bd5505
HP Security Bulletin HPSBUX02734 SSRT100729
Posted Jan 25, 2012
Authored by HP | Site hp.com

HP Security Bulletin HPSBUX02734 SSRT100729 - A potential security vulnerability has been identified with HP-UX OpenSSL. This vulnerability could be exploited remotely to create a Denial of Service (DoS) or to gain unauthorized access. Revision 1 of this advisory.

tags | advisory, denial of service
systems | hpux
advisories | CVE-2011-3210, CVE-2011-4108, CVE-2011-4109, CVE-2011-4576, CVE-2011-4577, CVE-2011-4619
MD5 | 67ac7b079800ca611fda987af17a1185
Red Hat Security Advisory 2012-0060-01
Posted Jan 24, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0060-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength, general purpose cryptography library. It was discovered that the Datagram Transport Layer Security protocol implementation in OpenSSL leaked timing information when performing certain operations. A remote attacker could possibly use this flaw to retrieve plain text from the encrypted packets by using a DTLS server as a padding oracle. A double free flaw was discovered in the policy checking code in OpenSSL. A remote attacker could use this flaw to crash an application that uses OpenSSL by providing an X.509 certificate that has specially-crafted policy extension data.

tags | advisory, remote, protocol
systems | linux, redhat
advisories | CVE-2011-4108, CVE-2011-4109, CVE-2011-4576, CVE-2011-4619
MD5 | 709f69e5769118d2d6d5fed19cf732ac
Red Hat Security Advisory 2012-0059-01
Posted Jan 24, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0059-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength, general purpose cryptography library. It was discovered that the Datagram Transport Layer Security protocol implementation in OpenSSL leaked timing information when performing certain operations. A remote attacker could possibly use this flaw to retrieve plain text from the encrypted packets by using a DTLS server as a padding oracle. An information leak flaw was found in the SSL 3.0 protocol implementation in OpenSSL. Incorrect initialization of SSL record padding bytes could cause an SSL client or server to send a limited amount of possibly sensitive data to its SSL peer via the encrypted connection.

tags | advisory, remote, protocol
systems | linux, redhat
advisories | CVE-2011-4108, CVE-2011-4576, CVE-2011-4577, CVE-2011-4619
MD5 | a636af2b52c38fc06f22d9c101925e8f
Mandriva Linux Security Advisory 2012-007
Posted Jan 17, 2012
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2012-007 - The DTLS implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f performs a MAC check only if certain padding is valid, which makes it easier for remote attackers to recover plaintext via a padding oracle attack. Double free vulnerability in OpenSSL 0.9.8 before 0.9.8s, when X509_V_FLAG_POLICY_CHECK is enabled, allows remote attackers to have an unspecified impact by triggering failure of a policy check. The SSL 3.0 implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly initialize data structures for block cipher padding, which might allow remote attackers to obtain sensitive information by decrypting the padding data sent by an SSL peer. The Server Gated Cryptography implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly handle handshake restarts, which allows remote attackers to cause a denial of service via unspecified vectors. The GOST ENGINE in OpenSSL before 1.0.0f does not properly handle invalid parameters for the GOST block cipher, which allows remote attackers to cause a denial of service via crafted data from a TLS client. The updated packages have been patched to correct these issues.

tags | advisory, remote, denial of service
systems | linux, mandriva
advisories | CVE-2011-4108, CVE-2011-4109, CVE-2011-4576, CVE-2011-4619, CVE-2012-0027
MD5 | 7ebf37dee057913b4d2750f4dd5dc640
Mandriva Linux Security Advisory 2012-006
Posted Jan 17, 2012
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2012-006 - The DTLS implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f performs a MAC check only if certain padding is valid, which makes it easier for remote attackers to recover plaintext via a padding oracle attack. Double free vulnerability in OpenSSL 0.9.8 before 0.9.8s, when X509_V_FLAG_POLICY_CHECK is enabled, allows remote attackers to have an unspecified impact by triggering failure of a policy check. The SSL 3.0 implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly initialize data structures for block cipher padding, which might allow remote attackers to obtain sensitive information by decrypting the padding data sent by an SSL peer. The Server Gated Cryptography implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly handle handshake restarts, which allows remote attackers to cause a denial of service via unspecified vectors. The updated packages have been patched to correct these issues.

tags | advisory, remote, denial of service
systems | linux, mandriva
advisories | CVE-2011-4108, CVE-2011-4109, CVE-2011-4576, CVE-2011-4619
MD5 | 2fd6f51dc1f4babbd66e71799685ae43
Debian Security Advisory 2390-1
Posted Jan 16, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2390-1 - Several vulnerabilities were discovered in OpenSSL, an implementation of TLS and related protocols. The DTLS implementation performs a MAC check only if certain padding is valid, which makes it easier for remote attackers to recover plaintext via a padding oracle attack. A double free vulnerability when X509_V_FLAG_POLICY_CHECK is enabled, allows remote attackers to cause applications crashes and potentially allow execution of arbitrary code by triggering failure of a policy check. On 32-bit systems, the operations on NIST elliptic curves P-256 and P-384 are not correctly implemented, potentially leaking the private ECC key of a TLS server. (Regular RSA-based keys are not affected by this vulnerability.) Various other issues were also addressed.

tags | advisory, remote, arbitrary, vulnerability, protocol
systems | linux, debian
advisories | CVE-2011-4108, CVE-2011-4109, CVE-2011-4354, CVE-2011-4576, CVE-2011-4619
MD5 | 9bc0bec47f669b4481973e0c0e420aba
OpenSSL Toolkit 1.0.0f
Posted Jan 7, 2012
Site openssl.org

OpenSSL is a robust, fully featured Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols with full-strength cryptography world-wide.

Changes: A fix was introduced for a security issue where an extension of the Vaudenay padding oracle attack on CBC mode encryption enables an efficient plaintext recovery attack against the OpenSSL implementation of DTLS. Various other bugfixes and improvements were made.
tags | tool, encryption, protocol
systems | unix
advisories | CVE-2011-4108, CVE-2011-4576, CVE-2011-4619, CVE-2012-0027, CVE-2011-4577
MD5 | e358705fb4a8827b5e9224a73f442025
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