ID de Prueba:	1.3.6.1.4.1.25623.1.1.10.2017.0281
Categoría:	Mageia Linux Local Security Checks
Título:	Mageia: Security Advisory (MGASA-2017-0281)
Resumen:	The remote host is missing an update for the 'curl' package(s) announced via the MGASA-2017-0281 advisory.
Descripción:	Summary: The remote host is missing an update for the 'curl' package(s) announced via the MGASA-2017-0281 advisory. Vulnerability Insight: 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 (CVE-2017-1000099). 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 sendto() 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 (CVE-2017-1000100). curl supports 'globbing' of URLs, in which a user can pass a numerical range to have the tool iterate over those numbers to do a sequence of transfers. In the globbing function that parses the numerical range, there was an omission that made curl read a byte beyond the end of the URL if given a carefully crafted, or just wrongly written, URL. The URL is stored in a heap based buffer, so it could then be made to wrongly read something else instead of crashing (CVE-2017-1000101). Affected Software/OS: 'curl' package(s) on Mageia 6. Solution: Please install the updated package(s). CVSS Score: 4.3 CVSS Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2017-1000099 BugTraq ID: 100281 http://www.securityfocus.com/bid/100281 https://security.gentoo.org/glsa/201709-14 http://www.securitytracker.com/id/1039119 Common Vulnerability Exposure (CVE) ID: CVE-2017-1000100 BugTraq ID: 100286 http://www.securityfocus.com/bid/100286 Debian Security Information: DSA-3992 (Google Search) http://www.debian.org/security/2017/dsa-3992 RedHat Security Advisories: RHSA-2018:3558 https://access.redhat.com/errata/RHSA-2018:3558 http://www.securitytracker.com/id/1039118 Common Vulnerability Exposure (CVE) ID: CVE-2017-1000101 BugTraq ID: 100249 http://www.securityfocus.com/bid/100249 http://www.securitytracker.com/id/1039117
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