Red Hat Security Advisory 2011-0909-01 - Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. A race condition flaw was found in the remove system entries method in the FileUtils module. If a local user ran a Ruby script that uses this method, a local attacker could use this flaw to delete arbitrary files and directories accessible to that user via a symbolic link attack. Various other issues were also addressed.
002b2f8388a2f00b13827580ece301527faddf9afd56964bdd2af96e2425291eRed Hat Security Advisory 2011-0908-01 - Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems. It was found that WEBrick did not filter terminal escape sequences from its log files. A remote attacker could use specially-crafted HTTP requests to inject terminal escape sequences into the WEBrick log files. If a victim viewed the log files with a terminal emulator, it could result in control characters being executed with the privileges of that user. Various other issues were also addressed.
f764e835cbd3d8a2b23da26618c67f3e646cccf75b019e7a43bc79fbc55d8f1bUbuntu Security Notice 900-1 - Emmanouel Kellinis discovered that Ruby did not properly handle certain string operations. An attacker could exploit this issue and possibly execute arbitrary code with application privileges. Giovanni Pellerano, Alessandro Tanasi, and Francesco Ongaro discovered that Ruby did not properly sanitize data written to log files. An attacker could insert specially-crafted data into log files which could affect certain terminal emulators and cause arbitrary files to be overwritten, or even possibly execute arbitrary commands. It was discovered that Ruby did not properly handle string arguments that represent large numbers. An attacker could exploit this and cause a denial of service. This issue only affected Ubuntu 9.10.
70b75a6c7bfeabf4136e18e897f88132e74cb4a9c3e67e5d0923c49a358f6156Mandriva Linux Security Advisory 2010-017 - WEBrick 1.3.1 in Ruby 1.8.6 through patchlevel 383, 1.8.7 through patchlevel 248, 1.8.8dev, 1.9.1 through patchlevel 376, and 1.9.2dev writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator. Packages for 2008.0 are provided for Corporate Desktop 2008.0 customers. The updated packages have been patched to correct this issue.
5b4843eb8fd87e50c463fed2a1697b702750dfd1be042b47462472371bd6e626Gentoo Linux Security Advisory 201001-9 - An input sanitation flaw in the WEBrick HTTP server included in Ruby might allow remote attackers to inject arbitrary control characters into terminal sessions. Giovanni Pellerano, Alessandro Tanasi and Francesco Ongaro reported that WEBrick does not filter terminal control characters, for instance when handling HTTP logs. Versions less than 1.8.7_p249 are affected.
f50111006fffa62948fd5efaae52f0ed28bc7804c0455af5537768f817e9d1a8Nginx, Varnish, Cherokee, thttpd, mini-httpd, WEBrick, Orion, AOLserver, Yaws and Boa are subject to log escape sequence injection vulnerabilities.
ca929167a6a430b66650857a093ae76e47f6db643eb8bafffa59b6ebc10896d0
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