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CVSS: 6.4EPSS: 0%CPEs: 5EXPL: 0

The ADDW macro in stdio-common/vfscanf.c in the GNU C Library (aka glibc or libc6) before 2.21 does not properly consider data-type size during a risk-management decision for use of the alloca function, which might allow context-dependent attackers to cause a denial of service (segmentation violation) or overwrite memory locations beyond the stack boundary via a long line containing wide characters that are improperly handled in a wscanf call. El macro ADDW en stdio-common/vfscanf.c en la libraría GNU C (también conocida como glibc o libc6) anterior a 2.21 no considera correctamente el tamaño de tipos de datos durante una decisión de la gestión de riesgos para utilizar en la función alloca, lo que podría permitir atacantes dependientes de contexto causar una denegación de servicio (violación de segmentación) o sobrescribir localizaciones de memoria más allá del límite de la pila a través de una línea larga que contiene caracateres anchas que se manejen incorrectamente en una llamada wscanf. A stack overflow flaw was found in glibc's swscanf() function. An attacker able to make an application call the swscanf() function could use this flaw to crash that application or, potentially, execute arbitrary code with the permissions of the user running the application. • http://openwall.com/lists/oss-security/2015/02/04/1 http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html http://www.securityfocus.com/bid/72499 http://www.ubuntu.com/usn/USN-2519-1 https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commit%3Bh=5bd80bfe9ca0d955bfbbc002781bc7b01b6bcb06 https://access.redhat.com/security/cve/CVE-2015-1473 https://bugzilla.redhat.com/show_bug.cgi?id=1209105 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-121: Stack-based Buffer Overflow •

CVSS: 7.5EPSS: 1%CPEs: 5EXPL: 0

The ADDW macro in stdio-common/vfscanf.c in the GNU C Library (aka glibc or libc6) before 2.21 does not properly consider data-type size during memory allocation, which allows context-dependent attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact via a long line containing wide characters that are improperly handled in a wscanf call. El macro ADDW en stdio-common/vfscanf.c en la libraría GNU C (también conocida como glibc o libc6) anterior a 2.21 no considera correctamente el tamaño de datos de estado durante la reserva de memoria, lo que permite a atacantes dependientes de contexto causar una denegación de servicio (desbordamiento de buffer) o posiblemente tener otro impacto no especificado a través de una línea larga que contiene caracteres anchos que se manejen incorrectamente en una llamada wscanf. A heap-based buffer overflow flaw was found in glibc's swscanf() function. An attacker able to make an application call the swscanf() function could use this flaw to crash that application or, potentially, execute arbitrary code with the permissions of the user running the application. Many Cisco devices such as Cisco RV340, Cisco RV340W, Cisco RV345, Cisco RV345P, Cisco RV260, Cisco RV260P, Cisco RV260W, Cisco 160, and Cisco 160W suffer from having hard-coded credentials, known GNU glibc, known BusyBox, and IoT Inspector identified vulnerabilities. • http://openwall.com/lists/oss-security/2015/02/04/1 http://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html http://seclists.org/fulldisclosure/2019/Jun/18 http://seclists.org/fulldisclosure/2019/Sep/7 http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015&# • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-122: Heap-based Buffer Overflow •

CVSS: 5.0EPSS: 1%CPEs: 29EXPL: 2

GNU C Library (aka glibc) before 2.20 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via a multibyte character value of "0xffff" to the iconv function when converting (1) IBM933, (2) IBM935, (3) IBM937, (4) IBM939, or (5) IBM1364 encoded data to UTF-8. GNU C Library (también conocido como glibc) anterior a 2.20 permite a atacantes dependientes de contexto causar una denegación de servicio (lectura fuera de rango y caída) a través de un valor de caracteres de multibytes de '0xffff' en la función iconv cuando convierte datos codificados de (1) IBM933, (2) IBM935, (3) IBM937, (4) IBM939, o (5) IBM1364 a UTF-8. An out-of-bounds read flaw was found in the way glibc's iconv() function converted certain encoded data to UTF-8. An attacker able to make an application call the iconv() function with a specially crafted argument could use this flaw to crash that application. • http://linux.oracle.com/errata/ELSA-2015-0016.html http://secunia.com/advisories/62100 http://secunia.com/advisories/62146 http://ubuntu.com/usn/usn-2432-1 http://www.debian.org/security/2015/dsa-3142 http://www.mandriva.com/security/advisories?name=MDVSA-2014:175 http://www.openwall.com/lists/oss-security/2014/08/29/3 http://www.openwall.com/lists/oss-security/2014/09/02/1 http://www.securityfocus.com/bid/69472 https://security.gentoo.org/glsa/201602-02& • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 5.0EPSS: 0%CPEs: 6EXPL: 1

iconvdata/ibm930.c in GNU C Library (aka glibc) before 2.16 allows context-dependent attackers to cause a denial of service (out-of-bounds read) via a multibyte character value of "0xffff" to the iconv function when converting IBM930 encoded data to UTF-8. iconvdata/ibm930.c en GNU C Library (también conocido como glibc) anterior a 2.16 permite a atacantes dependientes de contexto causar una denegación de servicio (lectura fuera de rango) a través de un valor de caracteres de multibytes de '0xffff' en la función iconv cuando convierte datos codificados de IBM930 a UTF-8. • http://www.debian.org/security/2015/dsa-3142 http://www.mandriva.com/security/advisories?name=MDVSA-2014:175 http://www.openwall.com/lists/oss-security/2014/08/29/3 http://www.openwall.com/lists/oss-security/2014/09/02/1 http://www.securityfocus.com/bid/69472 http://www.ubuntu.com/usn/USN-2432-1 https://security.gentoo.org/glsa/201503-04 https://sourceware.org/bugzilla/show_bug.cgi?id=14134 https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=6e230d1183 • CWE-20: Improper Input Validation •

CVSS: 7.5EPSS: 1%CPEs: 2EXPL: 1

Off-by-one error in the __gconv_translit_find function in gconv_trans.c in GNU C Library (aka glibc) allows context-dependent attackers to cause a denial of service (crash) or execute arbitrary code via vectors related to the CHARSET environment variable and gconv transliteration modules. Error de superación de límite (off-by-one) en la función __gconv_translit_find en gconv_trans.c en GNU C Library (también conocido como glibc) permite a atacantes dependientes de contexto causar una denegación de servicio (caída) o ejecutar código arbitrario a través de vectores relacionados con la variable del entorno CHARSET y los módulos de transliteración gconv. An off-by-one heap-based buffer overflow flaw was found in glibc's internal __gconv_translit_find() function. An attacker able to make an application call the iconv_open() function with a specially crafted argument could possibly use this flaw to execute arbitrary code with the privileges of that application. • https://www.exploit-db.com/exploits/34421 http://googleprojectzero.blogspot.com/2014/08/the-poisoned-nul-byte-2014-edition.html http://linux.oracle.com/errata/ELSA-2015-0092.html http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00017.html http://rhn.redhat.com/errata/RHSA-2014-1118.html http://seclists.org/fulldisclosure/2014/Aug/69 http://secunia.com/advisories/60345 http://secunia.com/advisories/60358 http://secunia.com/advisories/60441 http://secunia.com/advi • CWE-122: Heap-based Buffer Overflow CWE-189: Numeric Errors •