CVSS: 9.8EPSS: 1%CPEs: 4EXPL: 0CVE-2017-8817 – curl: FTP wildcard out of bounds read
https://notcve.org/view.php?id=CVE-2017-8817
The FTP wildcard function in curl and libcurl before 7.57.0 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) or possibly have unspecified other impact via a string that ends with an '[' character. La función FTP wildcard en curl y libcurl en versiones anteriores a la 7.57.0 permite que atacantes remotos provoquen una denegación de servicio (lectura fuera de límites y cierre inesperado de aplicación) o, probablemente, causen cualquier otro tipo de impacto mediante una cadena que termina con un carácter "[". • http://security.cucumberlinux.com/security/details.php?id=162 http://www.securityfocus.com/bid/102057 http://www.securitytracker.com/id/1039897 https://access.redhat.com/errata/RHSA-2018:3558 https://curl.haxx.se/docs/adv_2017-ae72.html https://lists.debian.org/debian-lts-announce/2017/11/msg00040.html https://security.gentoo.org/glsa/201712-04 https://www.debian.org/security/2017/dsa-4051 https://access.redhat.com/security/cve/CVE-2017-8817 https://bugzilla.redhat.com& • CWE-125: Out-of-bounds Read •
CVSS: 9.1EPSS: 2%CPEs: 3EXPL: 0CVE-2017-1000257 – curl: IMAP FETCH response out of bounds read
https://notcve.org/view.php?id=CVE-2017-1000257
An IMAP FETCH response line indicates the size of the returned data, in number of bytes. When that response says the data is zero bytes, libcurl would pass on that (non-existing) data with a pointer and the size (zero) to the deliver-data function. libcurl's deliver-data function treats zero as a magic number and invokes strlen() on the data to figure out the length. The strlen() is called on a heap based buffer that might not be zero terminated so libcurl might read beyond the end of it into whatever memory lies after (or just crash) and then deliver that to the application as if it was actually downloaded. Una línea de respuesta IMAP FETCH indica el tamaño de los datos devueltos en número de bytes. Cuando una respuesta indica que el tamaño de los datos es cero bytes, libcurl pasaría esos datos (inexistentes) con un puntero y el tamaño (cero) a la función deliver-data. • http://www.debian.org/security/2017/dsa-4007 http://www.securityfocus.com/bid/101519 http://www.securitytracker.com/id/1039644 https://access.redhat.com/errata/RHSA-2017:3263 https://access.redhat.com/errata/RHSA-2018:2486 https://access.redhat.com/errata/RHSA-2018:3558 https://curl.haxx.se/docs/adv_20171023.html https://security.gentoo.org/glsa/201712-04 https://access.redhat.com/security/cve/CVE-2017-1000257 https://bugzilla.redhat.com/show_bug.cgi?id=1503705 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-125: Out-of-bounds Read •
CVSS: 7.5EPSS: 0%CPEs: 117EXPL: 0CVE-2017-1000254 – curl: FTP PWD response parser out of bounds read
https://notcve.org/view.php?id=CVE-2017-1000254
libcurl may read outside of a heap allocated buffer when doing FTP. When libcurl connects to an FTP server and successfully logs in (anonymous or not), it asks the server for the current directory with the `PWD` command. The server then responds with a 257 response containing the path, inside double quotes. The returned path name is then kept by libcurl for subsequent uses. Due to a flaw in the string parser for this directory name, a directory name passed like this but without a closing double quote would lead to libcurl not adding a trailing NUL byte to the buffer holding the name. • http://www.debian.org/security/2017/dsa-3992 http://www.securityfocus.com/bid/101115 http://www.securitytracker.com/id/1039509 https://access.redhat.com/errata/RHSA-2018:2486 https://access.redhat.com/errata/RHSA-2018:3558 https://curl.haxx.se/673d0cd8.patch https://curl.haxx.se/docs/adv_20171004.html https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-125: Out-of-bounds Read •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2017-1000099
https://notcve.org/view.php?id=CVE-2017-1000099
When asking to get a file from a file:// URL, libcurl provides a feature that outputs meta-data about the file using HTTP-like headers. The code doing this would send the wrong buffer to the user (stdout or the application's provide callback), which could lead to other private data from the heap to get inadvertently displayed. The wrong buffer was an uninitialized memory area allocated on the heap and if it turned out to not contain any zero byte, it would continue and display the data following that buffer in memory. A la hora de pedir un archivo de una URL de tipo "file://", libcurl ofrece una característica que envía metadatos sobre el archivo mediante cabeceras HTTP. El código responsable de esto enviaría el búfer erróneo al usuario (stdout o la llamada de vuelta de la aplicación), lo que podría provocar que otros datos privados de la memoria dinámica (heap) se muestren en consecuencia. • http://www.securityfocus.com/bid/100281 http://www.securitytracker.com/id/1039119 https://curl.haxx.se/0809C.patch https://curl.haxx.se/docs/adv_20170809C.html https://security.gentoo.org/glsa/201709-14 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 6.5EPSS: 0%CPEs: 79EXPL: 0CVE-2017-1000100 – curl: TFTP sends more than buffer size
https://notcve.org/view.php?id=CVE-2017-1000100
When doing a TFTP transfer and curl/libcurl is given a URL that contains a very long file name (longer than about 515 bytes), the file name is truncated to fit within the buffer boundaries, but the buffer size is still wrongly updated to use the untruncated length. This too large value is then used in the sendto() call, making curl attempt to send more data than what is actually put into the buffer. The endto() function will then read beyond the end of the heap based buffer. A malicious HTTP(S) server could redirect a vulnerable libcurl-using client to a crafted TFTP URL (if the client hasn't restricted which protocols it allows redirects to) and trick it to send private memory contents to a remote server over UDP. Limit curl's redirect protocols with --proto-redir and libcurl's with CURLOPT_REDIR_PROTOCOLS. • http://www.debian.org/security/2017/dsa-3992 http://www.securityfocus.com/bid/100286 http://www.securitytracker.com/id/1039118 https://access.redhat.com/errata/RHSA-2018:3558 https://curl.haxx.se/docs/adv_20170809B.html https://security.gentoo.org/glsa/201709-14 https://support.apple.com/HT208221 https://access.redhat.com/security/cve/CVE-2017-1000100 https://bugzilla.redhat.com/show_bug.cgi?id=1478310 • CWE-125: Out-of-bounds Read CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •