CVSS: 7.8EPSS: 0%CPEs: 10EXPL: 0CVE-2018-1100 – zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution
https://notcve.org/view.php?id=CVE-2018-1100
zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the utils.c:checkmailpath function. A local attacker could exploit this to execute arbitrary code in the context of another user. zsh hasta la versión 5.4.2 es vulnerable a un desbordamiento de búfer basado en pila en la función utils.c:checkmailpath. Un atacante local podría explotarlo para ejecutar código arbitrario en el contexto de otro usuario. A buffer overflow flaw was found in the zsh shell check path functionality. A local, unprivileged user can create a specially crafted message file, which, if used to set a custom "you have new mail" message, leads to code execution in the context of the user who receives the message. • https://access.redhat.com/errata/RHSA-2018:1932 https://access.redhat.com/errata/RHSA-2018:3073 https://bugzilla.redhat.com/show_bug.cgi?id=1563395 https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html https://security.gentoo.org/glsa/201805-10 https://sourceforge.net/p/zsh/code/ci/31f72205630687c1cef89347863aab355296a27f https://usn.ubuntu.com/3764-1 https://access.redhat.com/security/cve/CVE-2018-1100 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 6.5EPSS: 0%CPEs: 5EXPL: 0CVE-2017-7562 – krb5: Authentication bypass by improper validation of certificate EKU and SAN
https://notcve.org/view.php?id=CVE-2017-7562
An authentication bypass flaw was found in the way krb5's certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances. Se ha encontrado un error de omisión de autenticación en la forma en que la interfaz de certauth de krb5 en versiones anteriores a la 1.16.1 gestionaba la validación de los certificados de cliente. Un atacante remoto capaz de comunicarse con el KDC podría utilizar este fallo para hacerse pasar por directores arbitrarios en circunstancias poco frecuentes y erróneas. An authentication bypass flaw was found in the way krb5's certauth interface handled the validation of client certificates. • http://www.securityfocus.com/bid/100511 https://access.redhat.com/errata/RHSA-2018:0666 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562 https://github.com/krb5/krb5/pull/694 https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196 https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2 https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d https://access.redhat.com/security/cve/CVE-2017-7562 https:/ • CWE-287: Improper Authentication CWE-295: Improper Certificate Validation •
CVSS: 7.8EPSS: 1%CPEs: 29EXPL: 0CVE-2018-1000156 – patch: Malicious patch files cause ed to execute arbitrary commands
https://notcve.org/view.php?id=CVE-2018-1000156
GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically the EDITOR_PROGRAM invocation (using ed) can result in code execution. This attack appear to be exploitable via a patch file processed via the patch utility. This is similar to FreeBSD's CVE-2015-1418 however although they share a common ancestry the code bases have diverged over time. La versión 2.7.6 de GNU Patch contiene una vulnerabilidad de validación de entradas al procesar archivos patch; específicamente la invocación EDITOR_PROGRAM (usando ed) puede resultar en la ejecución de código. el ataque parece ser explotable mediante un archivo patch procesado mediante la utilidad patch. Esto es similar al CVE-2015-1418 de FreeBSD: aunque comparten un ancestro común, las bases de código han divergido con el tiempo. • http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.html http://rachelbythebay.com/w/2018/04/05/bangpatch https://access.redhat.com/errata/RHSA-2018:1199 https://access.redhat.com/errata/RHSA-2018:1200 https://access.redhat.com/errata/RHSA-2018:2091 https://access.redhat.com/errata/RHSA-2018:2092 https://access.redhat.com/errata/RHSA-2018:2093 https://access.redhat.com/errata/RHSA-2018:2094 https://access.redhat.com/errata/RHSA-2018:2095 ht • CWE-20: Improper Input Validation CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') •
CVSS: 7.1EPSS: 0%CPEs: 6EXPL: 1CVE-2018-1094 – kernel: NULL pointer dereference in ext4/xattr.c:ext4_xattr_inode_hash() causes crash with crafted ext4 image
https://notcve.org/view.php?id=CVE-2018-1094
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image. La función ext4_fill_super en fs/ext4/super.c en el kernel de Linux hasta la versión 4.15.15 no inicializa siempre el controlador de las sumas de verificación crc32c, lo que permite que los atacantes provoquen una denegación de servicio (desreferencia de puntero NULL en ext4_xattr_inode_hash y cierre inesperado del sistema) mediante una imagen ext4 manipulada. The Linux kernel is vulnerable to a NULL pointer dereference in the ext4/xattr.c:ext4_xattr_inode_hash() function. An attacker could trick a legitimate user or a privileged attacker could exploit this to cause a NULL pointer dereference with a crafted ext4 image. • http://openwall.com/lists/oss-security/2018/03/29/1 https://access.redhat.com/errata/RHSA-2018:2948 https://access.redhat.com/errata/RHSA-2018:3083 https://access.redhat.com/errata/RHSA-2018:3096 https://bugzilla.kernel.org/show_bug.cgi?id=199183 https://bugzilla.redhat.com/show_bug.cgi?id=1560788 https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957 https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.g • CWE-476: NULL Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 21EXPL: 0CVE-2018-7566 – kernel: race condition in snd_seq_write() may lead to UAF or OOB-access
https://notcve.org/view.php?id=CVE-2018-7566
The Linux kernel 4.15 has a Buffer Overflow via an SNDRV_SEQ_IOCTL_SET_CLIENT_POOL ioctl write operation to /dev/snd/seq by a local user. El kernel de Linux 4.15 tiene un desbordamiento de búfer mediante una operación de escritura ioctl SNDRV_SEQ_IOCTL_SET_CLIENT_POOL en /dev/snd/seq por un usuario local. ALSA sequencer core initializes the event pool on demand by invoking snd_seq_pool_init() when the first write happens and the pool is empty. A user can reset the pool size manually via ioctl concurrently, and this may lead to UAF or out-of-bound access. • http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00067.html http://mailman.alsa-project.org/pipermail/alsa-devel/2018-February/132026.html http://www.securityfocus.com/bid/103605 https://access.redhat.com/errata/RHSA-2018:2384 https://access.redhat.com/errata/RHSA-2018:2390 https://access.redhat.com/errata/RHSA-2018:2395 https://access.redhat.com/errata/RHSA-2018:2948 https://access.redhat.com/errata/RHSA-2019:1483 https://access.redhat.com/errata/RHSA-2019:1487 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •