Updated openssl packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols, as well as a full-strength, general purpose cryptography library.

An invalid free flaw was found in the way OpenSSL handled certain DTLS handshake messages. A malicious DTLS client or server could cause a DTLS server or client using OpenSSL to crash or, potentially, execute arbitrary code. (CVE-2014-8176)

A flaw was found in the way the OpenSSL packages shipped with Red Hat Enterprise Linux 6 and 7 performed locking in the ssleay_rand_bytes() function. This issue could possibly cause a multi-threaded application using OpenSSL to perform an out-of-bounds read and crash.
(CVE-2015-3216)

An out-of-bounds read flaw was found in the X509_cmp_time() function of OpenSSL. A specially crafted X.509 certificate or a Certificate Revocation List (CRL) could possibly cause a TLS/SSL server or client using OpenSSL to crash. (CVE-2015-1789)

A race condition was found in the session handling code of OpenSSL.
This issue could possibly cause a multi-threaded TLS/SSL client using OpenSSL to double free session ticket data and crash. (CVE-2015-1791)

A flaw was found in the way OpenSSL handled Cryptographic Message Syntax (CMS) messages. A CMS message with an unknown hash function identifier could cause an application using OpenSSL to enter an infinite loop. (CVE-2015-1792)

A NULL pointer dereference was found in the way OpenSSL handled certain PKCS#7 inputs. A specially crafted PKCS#7 input with missing EncryptedContent data could cause an application using OpenSSL to crash. (CVE-2015-1790)

Red Hat would like to thank the OpenSSL project for reporting CVE-2014-8176, CVE-2015-1789, CVE-2015-1790, CVE-2015-1791 and CVE-2015-1792 flaws. Upstream acknowledges Praveen Kariyanahalli and Ivan Fratric as the original reporters of CVE-2014-8176, Robert Swiecki and Hanno Bock as the original reporters of CVE-2015-1789, Michal Zalewski as the original reporter of CVE-2015-1790, Emilia Kasper as the original report of CVE-2015-1791 and Johannes Bauer as the original reporter of CVE-2015-1792.

All openssl users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.

Multiple moderate and low impact security issues fixed.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of Dell EMC NetWorker installed on the remote Windows host is prior to 19.14.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the DSA-2026-253 advisory, including the following:

  - The ASN.1 implementation in OpenSSL before 1.0.1o and 1.0.2 before 1.0.2c allows remote attackers to     execute arbitrary code or cause a denial of service (buffer underflow and memory corruption) via an ANY     field in crafted serialized data, aka the 'negative zero' issue. (CVE-2016-2108)

  - Double free vulnerability in the dsa_priv_decode function in crypto/dsa/dsa_ameth.c in OpenSSL 1.0.1     before 1.0.1s and 1.0.2 before 1.0.2g allows remote attackers to cause a denial of service (memory     corruption) or possibly have unspecified other impact via a malformed DSA private key. (CVE-2016-0705)

  - curl before version 7.61.1 is vulnerable to a buffer overrun in the NTLM authentication code. On systems     with a 32 bit size_t, an integer overflow in Curl_ntlm_core_mk_nt_hash can cause a heap buffer overflow     when the password length exceeds 2GB. (CVE-2018-14618)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
84204	RHEL 6 / 7 : openssl (RHSA-2015:1115)	Nessus	Red Hat Local Security Checks	2015/6/16	2021/2/5	high
84301	Fedora 22 : openssl-1.0.1k-10.fc22 (2015-10047)	Nessus	Fedora Local Security Checks	2015/6/22	2021/1/11	high
84375	Fedora 21 : openssl-1.0.1k-10.fc21 (2015-10108)	Nessus	Fedora Local Security Checks	2015/6/25	2021/1/11	high
379578	Dell NetWorker < 19.14.0.1 Multiple Vulnerabilities (DSA-2026-253)	Nessus	Windows	2026/11/12	2026/11/13	critical

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