SB2015061202 - Buffer overflow in OpenSSL

Description

This security bulletin contains information about 1 security vulnerability.

1) Buffer overflow (CVE-ID: CVE-2014-8176)

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

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 allows remote DTLS peers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via unexpected application data.

Remediation

Install update from vendor's website.

References

• http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015
• http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc
• http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00007.html
• http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00037.html
• http://rhn.redhat.com/errata/RHSA-2015-1115.html
• http://rhn.redhat.com/errata/RHSA-2016-2957.html
• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150612-openssl
• http://www.debian.org/security/2015/dsa-3287
• http://www.fortiguard.com/advisory/openssl-vulnerabilities-june-2015
• http://www.securityfocus.com/bid/75159
• http://www.securitytracker.com/id/1032564
• http://www.ubuntu.com/usn/USN-2639-1
• https://bto.bluecoat.com/security-advisory/sa98
• https://github.com/openssl/openssl/commit/470990fee0182566d439ef7e82d1abf18b7085d7
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05184351
• https://kc.mcafee.com/corporate/index?page=content&id=SB10122
• https://openssl.org/news/secadv/20150611.txt
• https://rt.openssl.org/Ticket/Display.html?id=3286&user=guest&pass=guest
• https://security.gentoo.org/glsa/201506-02
• https://www.openssl.org/news/secadv_20150611.txt