Stay Secure with the Latest Linux Advisories

security advisorygentoobuffer overflow

Gentoo: GLSA 200512-09 Low: cURL Vulnerability with Buffer Overflow Threat

cURL is vulnerable to local arbitrary code execution via buffer overflow due to the insecure parsing of URLs.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200512-09 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Low Title: cURL: Off-by-one errors in URL handling Date: December 16, 2005 Bugs: #114710 ID: 200512-09 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= cURL is vulnerable to local arbitrary code execution via buffer overflow due to the insecure parsing of URLs. Background ========= cURL is a command line tool for transferring files with URL syntax, supporting numerous protocols. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/curl < 7.15.1 > = 7.15.1 Description ========== Stefan Esser from the Hardened-PHP Project has reported a vulnerability in cURL that allows for a local buffer overflow when cURL attempts to parse specially crafted URLs. The URL can be specially crafted in one of two ways: the URL could be malformed in a way that prevents a terminating null byte from being added to either a hostname or path buffer; or the URL could contain a "?" separator in the hostname portion, which causes a "/" to be prepended to the resulting string. Impact ===== An attacker capable of getting cURL to parse a maliciously crafted URL could cause a denial of service or execute arbitrary code with the privileges of the user making the call to cURL. An attacker could also escape open_basedir or safe_mode pseudo-restrictions whenexploiting this problem from within a PHP program when PHP is compiled with libcurl. Workaround ========= There is no known workaround at this time. Resolution ========= All cURL users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =net-misc/curl-7.15.1" References ========= [ 1 ] CVE-2005-4077 [ 2 ] Hardened-PHP Advisory Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200512-09 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org/. License ====== Copyright 2005 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.0/ . The Gentoo Linux Advisory GLSA 202311-01 discusses a security flaw related to OpenSSL's handling of memory allocation, which has been classified with a medium severity ranking.. Curl Security Advisory, Gentoo Patch, Buffer Overflow Risk. . Severity: Low. LinuxSecurity.com Team

Dec 16, 2005 •Low Gentoo