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computer vulnerability bulletin CVE-2015-0207 CVE-2015-0208 CVE-2015-0286

OpenSSL 1.0.2: nine vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of OpenSSL 1.0.2.
Vulnerable products: ProxyAV, ProxySG par Blue Coat, SGOS by Blue Coat, Fedora, AIX, IRAD, Tivoli Storage Manager, Tivoli Workload Scheduler, WebSphere MQ, Junos Pulse, Juniper Network Connect, Juniper SBR, Data ONTAP, NetBSD, OpenSSL, openSUSE, openSUSE Leap, Oracle Communications, RHEL, Slackware, stunnel, SUSE Linux Enterprise Desktop, SLES, Unix (platform) ~ not comprehensive.
Severity of this weakness: 3/4.
Consequences of an attack: user access/rights, denial of service on service.
Hacker's origin: internet client.
Number of vulnerabilities in this bulletin: 9.
Creation date: 19/03/2015.
Références of this bulletin: 1701038, 1701334, 1902519, 1960491, 1964410, 1975397, 7043086, 9010031, CERTFR-2015-AVI-117, CERTFR-2015-AVI-177, CERTFR-2015-AVI-259, CERTFR-2016-AVI-303, cisco-sa-20150408-ntpd, cpuapr2017, cpuoct2016, cpuoct2017, CTX216642, CVE-2015-0207, CVE-2015-0208, CVE-2015-0286, CVE-2015-0287, CVE-2015-0289, CVE-2015-0290, CVE-2015-0291, CVE-2015-0293, CVE-2015-1787, FEDORA-2015-6855, MDVSA-2015:062, MDVSA-2015:063, NetBSD-SA2015-007, NTAP-20150323-0002, openSUSE-SU-2016:0640-1, RHSA-2015:0800-01, SA92, SSA:2015-111-09, SUSE-SU-2015:0541-1, SUSE-SU-2015:0553-1, SUSE-SU-2015:0553-2, SUSE-SU-2015:0578-1, SUSE-SU-2016:0678-1, TSB16661, VIGILANCE-VUL-16428.

Description of the vulnerability

Several vulnerabilities were announced in OpenSSL 1.0.2.

An attacker can connect to a SSL server, and renegotiate with an invalid signature algorithm, to force a NULL pointer to be dereferenced, in order to trigger a denial of service. [severity:3/4; CVE-2015-0291]

An attacker can force a NULL pointer to be dereferenced in the Multiblock feature, in order to trigger a denial of service. [severity:2/4; CVE-2015-0290]

An attacker can force a read at an invalid address in DTLSv1_listen, in order to trigger a denial of service. [severity:2/4; CVE-2015-0207]

An attacker can force a read at an invalid address in ASN1_TYPE_cmp, in order to trigger a denial of service. [severity:2/4; CVE-2015-0286]

An attacker can force a NULL pointer to be dereferenced with an invalid PSS parameter, in order to trigger a denial of service. [severity:2/4; CVE-2015-0208]

An attacker can generate a memory corruption in ASN.1, in order to trigger a denial of service, and possibly to execute code. [severity:3/4; CVE-2015-0287]

An attacker can force a NULL pointer to be dereferenced in PKCS#7, in order to trigger a denial of service. [severity:2/4; CVE-2015-0289]

An attacker can generate an OPENSSL_assert, in order to trigger a denial of service. [severity:2/4; CVE-2015-0293]

An attacker can use DHE and a zero lenght ClientKeyExchange message, in order to trigger a denial of service. [severity:2/4; CVE-2015-1787]
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