CVE-2015-7837 – kernel: securelevel disabled after kexec
https://notcve.org/view.php?id=CVE-2015-7837
The Linux kernel, as used in Red Hat Enterprise Linux 7, kernel-rt, and Enterprise MRG 2 and when booted with UEFI Secure Boot enabled, allows local users to bypass intended securelevel/secureboot restrictions by leveraging improper handling of secure_boot flag across kexec reboot. El kernel de Linux, tal y como se emplea en Red Hat Enterprise Linux 7, kernel-rt y Enterprise MRG 2 y cuando se emplea con UEFI Secure Boot habilitado, permite que usuarios locales omitan las restricciones securelevel/secureboot previstas aprovechando la gestión incorrecta de la marca secure_boot cuando se reinicia kexec. A flaw was found in the way the Linux kernel handled the securelevel functionality after performing a kexec operation. A local attacker could use this flaw to bypass the security mechanism of the securelevel/secureboot combination. • http://rhn.redhat.com/errata/RHSA-2015-2152.html http://rhn.redhat.com/errata/RHSA-2015-2411.html http://www.openwall.com/lists/oss-security/2015/10/15/6 http://www.securityfocus.com/bid/77097 https://bugzilla.redhat.com/show_bug.cgi?id=1272472 https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798 https://access.redhat.com/security/cve/CVE-2015-7837 • CWE-254: 7PK - Security Features CWE-456: Missing Initialization of a Variable •
CVE-2015-7981 – libpng: Out-of-bounds read in png_convert_to_rfc1123
https://notcve.org/view.php?id=CVE-2015-7981
The png_convert_to_rfc1123 function in png.c in libpng 1.0.x before 1.0.64, 1.2.x before 1.2.54, and 1.4.x before 1.4.17 allows remote attackers to obtain sensitive process memory information via crafted tIME chunk data in an image file, which triggers an out-of-bounds read. La función png_convert_to_rfc1123 en png.c en libpng 1.0.x en versiones anteriores a 1.0.64, 1.2.x en versiones anteriores a 1.2.54 y 1.4.x en versiones anteriores a 1.4.17 permite a atacantes remotos obtener información sensible de la memoria de proceso a través de un fragmento de datos tlME manipulado en un archivo de imagen, lo que desencadena una lectura fuera de rango. An array-indexing error was discovered in the png_convert_to_rfc1123() function of libpng. An attacker could possibly use this flaw to cause an out-of-bounds read by tricking an unsuspecting user into processing a specially crafted PNG image. • http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172620.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172647.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172663.html http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00033.html http://lists.opensuse.org/opensuse-updates/2015-11/msg00160.html http://rhn.redhat.com/errata/RHSA-2015-2594.html http://rhn.redhat.com/errata/RHSA-2015-2595.html http://sourcefor • CWE-125: Out-of-bounds Read CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVE-2015-8126 – libpng: Buffer overflow vulnerabilities in png_get_PLTE/png_set_PLTE functions
https://notcve.org/view.php?id=CVE-2015-8126
Multiple buffer overflows in the (1) png_set_PLTE and (2) png_get_PLTE functions in libpng before 1.0.64, 1.1.x and 1.2.x before 1.2.54, 1.3.x and 1.4.x before 1.4.17, 1.5.x before 1.5.24, and 1.6.x before 1.6.19 allow remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a small bit-depth value in an IHDR (aka image header) chunk in a PNG image. Múltiples desbordamientos de buffer en las funciones (1) png_set_PLTE y (2) png_get_PLTE en libpng en versiones anteriores a 1.0.64, 1.1.x y 1.2.x en versiones anteriores a 1.2.54, 1.3.x y 1.4.x en versiones anteriores a 1.4.17, 1.5.x en versiones anteriores a 1.5.24 y 1.6.x en versiones anteriores a 1.6.19 permiten a atacantes remotos provocar una denegación de servicio (caída de aplicación) o posiblemente tener otro impacto no especificado a través de un valor bit-depth pequeño en un fragmento IHDR (también conocido como image header) en una imagen PNG. It was discovered that the png_get_PLTE() and png_set_PLTE() functions of libpng did not correctly calculate the maximum palette sizes for bit depths of less than 8. In case an application tried to use these functions in combination with properly calculated palette sizes, this could lead to a buffer overflow or out-of-bounds reads. An attacker could exploit this to cause a crash or potentially execute arbitrary code by tricking an unsuspecting user into processing a specially crafted PNG image. • http://googlechromereleases.blogspot.com/2016/03/stable-channel-update.html http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172324.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172620.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172647.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172663.html http://lists.fedoraproject.org/pipermail • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVE-2015-4858 – mysql: unspecified vulnerability related to Server:DML (CPU October 2015)
https://notcve.org/view.php?id=CVE-2015-4858
Unspecified vulnerability in Oracle MySQL Server 5.5.45 and earlier, and 5.6.26 and earlier, allows remote authenticated users to affect availability via vectors related to DML, a different vulnerability than CVE-2015-4913. Vulnerabilidad no especificada en Oracle MySQL Server 5.5.45 y versiones anteriores y 5.6.26 y versiones anteriores, permite a usuarios remotos autenticados afectar a la disponibilidad a través de vectores relacionados con DML, una vulnerabilidad diferente a CVE-2015-4913. • http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177539.html http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00010.html http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00011.html http://lists.opensuse.org/opensuse-updates/2016-02/msg00039.html http://rhn.redhat.com/errata/RHSA-2016-0534.html http://rhn.redhat.com/errata/RHSA-2016-0705.html http://rhn.redhat.com/errata/RHSA-2016-1480.html http://rhn.redhat.com/errata/RHSA-2016-1481 •
CVE-2015-4879 – mysql: unspecified vulnerability related to Server:DML (CPU October 2015)
https://notcve.org/view.php?id=CVE-2015-4879
Unspecified vulnerability in Oracle MySQL Server 5.5.44 and earlier, and 5.6.25 and earlier, allows remote authenticated users to affect confidentiality, integrity, and availability via vectors related to DML. Vulnerabilidad no especificada en Oracle MySQL Server 5.5.44 y versiones anteriores y 5.6.25 y versiones anteriores, permite a usuarios remotos autenticados afectar a la confidencialidad, integridad y disponibilidad a través de vectores relacionados con DML. • http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177539.html http://rhn.redhat.com/errata/RHSA-2015-1628.html http://rhn.redhat.com/errata/RHSA-2016-0534.html http://rhn.redhat.com/errata/RHSA-2016-1481.html http://www.debian.org/security/2015/dsa-3377 http://www.debian.org/security/2015/dsa-3385 http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html http://www •