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CVE-2017-3731

Status Candidate

Overview

If an SSL/TLS server or client is running on a 32-bit host, and a specific cipher is being used, then a truncated packet can cause that server or client to perform an out-of-bounds read, usually resulting in a crash. For OpenSSL 1.1.0, the crash can be triggered when using CHACHA20/POLY1305; users should upgrade to 1.1.0d. For Openssl 1.0.2, the crash can be triggered when using RC4-MD5; users who have not disabled that algorithm should update to 1.0.2k.

Related Files

Red Hat Security Advisory 2018-2186-01
Posted Jul 12, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-2186-01 - This release adds the new Apache HTTP Server 2.4.29 packages that are part of the JBoss Core Services offering. This release serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.23, and includes bug fixes and enhancements. Issues addressed include a remote SQL injection vulnerability.

tags | advisory, remote, web, sql injection
systems | linux, redhat
advisories | CVE-2016-2182, CVE-2016-6302, CVE-2016-6306, CVE-2016-7055, CVE-2017-3731, CVE-2017-3732, CVE-2017-3736, CVE-2017-3737, CVE-2017-3738
MD5 | fbcdc6c8fce9c2e8b64cdf912a07812c
Red Hat Security Advisory 2018-2185-01
Posted Jul 12, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-2185-01 - This release adds the new Apache HTTP Server 2.4.29 packages that are part of the JBoss Core Services offering. This release serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.23, and includes bug fixes and enhancements. Issues addressed include a remote SQL injection vulnerability.

tags | advisory, remote, web, sql injection
systems | linux, redhat
advisories | CVE-2016-2182, CVE-2016-6302, CVE-2016-6306, CVE-2016-7055, CVE-2017-3731, CVE-2017-3732, CVE-2017-3736, CVE-2017-3737, CVE-2017-3738
MD5 | eb9397531418cb50bca46adcac0cd964
Red Hat Security Advisory 2018-2187-01
Posted Jul 12, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-2187-01 - This release adds the new Apache HTTP Server 2.4.29 packages that are part of the JBoss Core Services offering. This release serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.23, and includes bug fixes and enhancements. Issues addressed include out-of-bounds access.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2016-2182, CVE-2016-6302, CVE-2016-6306, CVE-2016-7055, CVE-2017-3731, CVE-2017-3732, CVE-2017-3736, CVE-2017-3737, CVE-2017-3738
MD5 | cfa48876e8fac27e42c53afafad2422b
Micro Focus Security Bulletin MFSBGN03804 1
Posted May 10, 2018
Authored by Micro Focus | Site microfocus.com

Micro Focus Security Bulletin MFSBGN03804 1 - Potential security vulnerabilities have been identified with Service Manager. These vulnerabilities have been identified in the OpenSSL open source library component and may be exploited to cause disruption of service and unauthorized disclosure of information. Revision 1 of this advisory.

tags | advisory, vulnerability
advisories | CVE-2017-3731, CVE-2017-3732
MD5 | 36435e1b8d0ad78870aed6e6e5ed9906
FreeBSD Security Advisory - FreeBSD-SA-17:02.openssl
Posted Feb 23, 2017
Site security.freebsd.org

FreeBSD Security Advisory - If an SSL/TLS server or client is running on a 32-bit host, and a specific cipher is being used, then a truncated packet can cause that server or client to perform an out-of-bounds read, usually resulting in a crash. There is a carry propagating bug in the x86_64 Montgomery squaring procedure. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH are considered just feasible (although very difficult) because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be very significant and likely only accessible to a limited number of attackers. An attacker would additionally need online access to an unpatched system using the target private key in a scenario with persistent DH parameters and a private key that is shared between multiple clients. Various other issues have also been identified.

tags | advisory
systems | freebsd, bsd
advisories | CVE-2016-7055, CVE-2017-3731, CVE-2017-3732
MD5 | 61e028674e75cf79a6ef2b0daf4f97e0
Red Hat Security Advisory 2017-0286-01
Posted Feb 20, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0286-01 - 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. Security Fix: An integer underflow leading to an out of bounds read flaw was found in OpenSSL. A remote attacker could possibly use this flaw to crash a 32-bit TLS/SSL server or client using OpenSSL if it used the RC4-MD5 cipher suite.

tags | advisory, remote, protocol
systems | linux, redhat
advisories | CVE-2016-8610, CVE-2017-3731
MD5 | e3555d3da74a6f2c169653d44010e34c
Gentoo Linux Security Advisory 201702-07
Posted Feb 14, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201702-7 - Multiple vulnerabilities have been found in OpenSSL, the worst of which might allow attackers to access sensitive information. Versions less than 1.0.2k are affected.

tags | advisory, vulnerability
systems | linux, gentoo
advisories | CVE-2016-7055, CVE-2017-3730, CVE-2017-3731, CVE-2017-3732
MD5 | c6bf4dc6a719248f0294007cdff98ed7
Slackware Security Advisory - openssl Updates
Posted Feb 13, 2017
Authored by Slackware Security Team | Site slackware.com

Slackware Security Advisory - New openssl packages are available for Slackware 14.2 and -current to fix security issues.

tags | advisory
systems | linux, slackware
advisories | CVE-2016-7055, CVE-2017-3731, CVE-2017-3732
MD5 | 443590d470a124a7e37f1eb84463977d
Ubuntu Security Notice USN-3181-1
Posted Feb 1, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3181-1 - Guido Vranken discovered that OpenSSL used undefined behaviour when performing pointer arithmetic. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS as other releases were fixed in a previous security update. It was discovered that OpenSSL did not properly handle Montgomery multiplication, resulting in incorrect results leading to transient failures. This issue only applied to Ubuntu 16.04 LTS, and Ubuntu 16.10. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2016-2177, CVE-2016-7055, CVE-2016-7056, CVE-2016-8610, CVE-2017-3731, CVE-2017-3732
MD5 | 0f9680e2f4dbf5ff74ebda76238f5372
Debian Security Advisory 3773-1
Posted Jan 30, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3773-1 - Several vulnerabilities were discovered in OpenSSL.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2016-7056, CVE-2016-8610, CVE-2017-3731
MD5 | 55059b83323f9dfe13d608a6fd08a273
OpenSSL Toolkit 1.0.2k
Posted Jan 26, 2017
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: Bug fixes for an out-of-bounds read, a carry propagating bug, and multiple other issues.
tags | tool, encryption, protocol
systems | unix
advisories | CVE-2016-7055, CVE-2017-3731, CVE-2017-3732
MD5 | f965fc0bf01bf882b31314b61391ae65
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