{"id":"CVE-2014-4975","aliases":["DLA-200-1","DSA-3157-1","EUVD-2014-4890","GHSA-gxj7-mcpg-jpr6","MGASA-2014-0472","RHSA-2014:1912","RHSA-2014:1913","RHSA-2014:1914","RHSA-2026:7305","RHSA-2026:7307","RHSA-2026:8838","SUSE-SU-2017:1067-1","UBUNTU-CVE-2014-4975","USN-2397-1"],"status":"published","title":"Off-by-one error in the encodes function in pack.c in Ruby 1.9.3 and earlier, and 2.x through 2.1...","description":"Off-by-one error in the encodes function in pack.c in Ruby 1.9.3 and earlier, and 2.x through 2.1.2, when using certain format string specifiers, allows context-dependent attackers to cause a denial of service (segmentation fault) via vectors that trigger a stack-based buffer 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overflow.","status":"published","published":"2014-11-15T20:59:01.453Z","modified":"2026-06-17T00:10:51.533Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:57.304171Z"}],"osv":[{"id":"RHSA-2026:7305","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-21T10:09:49Z","modified":"2026-10-06T10:31:19.141484354Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:53:22.928316Z"},{"id":"RHSA-2026:7307","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-21T10:09:49Z","modified":"2026-10-06T10:31:08.987663145Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:53:22.928316Z"},{"id":"RHSA-2026:8838","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-21T10:10:33Z","modified":"2026-10-06T10:31:10.808115812Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:53:23.547034Z"},{"id":"DLA-200-1","title":"ruby1.9.1 - security update","status":"published","published":"2015-04-15T00:00:00Z","modified":"2026-03-09T01:18:01.593492Z","updated_at":"2026-11-02T15:46:10.227108Z"},{"id":"DSA-3157-1","title":"ruby1.9.1 - security update","status":"published","published":"2015-02-09T00:00:00Z","modified":"2026-03-09T01:21:55.313103Z","updated_at":"2026-11-02T15:46:15.843838Z"},{"id":"MGASA-2014-0472","title":"Updated ruby packages fix security vulnerabilities","description":"Will Wood discovered that Ruby incorrectly handled the encodes() function.\nAn attacker could possibly use this issue to cause Ruby to crash, resulting\nin a denial of service, or possibly execute arbitrary code. The default\ncompiler options for affected releases should reduce the vulnerability to a\ndenial of service (CVE-2014-4975).\n\nDue to an incomplete fix for CVE-2014-8080, 100% CPU utilization can occur as\na result of recursive expansion with an empty String. When reading text nodes\nfrom an XML document, the REXML parser in Ruby can be coerced into allocating\nextremely large string objects which can consume all of the memory on a\nmachine, causing a denial of service (CVE-2014-8090).\n","status":"published","published":"2014-11-21T12:44:16Z","modified":"2026-04-16T06:26:07.444884199Z","updated_at":"2026-11-02T15:49:39.488462Z"},{"id":"RHSA-2014:1912","title":"Red Hat Security Advisory: ruby security update","status":"published","published":"2024-09-13T09:20:06Z","modified":"2026-06-29T10:07:58Z","updated_at":"2026-11-02T15:53:02.532052Z"},{"id":"RHSA-2014:1913","title":"Red Hat Security Advisory: ruby193-ruby security update","status":"published","published":"2024-09-13T09:20:11Z","modified":"2026-06-29T10:07:59Z","updated_at":"2026-11-02T15:53:02.532052Z"},{"id":"RHSA-2014:1914","title":"Red Hat Security Advisory: ruby200-ruby security update","status":"published","published":"2024-09-13T09:20:23Z","modified":"2026-06-29T10:07:59Z","updated_at":"2026-11-02T15:53:02.532052Z"},{"id":"SUSE-SU-2017:1067-1","title":"Security update for ruby2.1","description":"\nThis ruby2.1 update to version 2.1.9 fixes the following issues:\n\nSecurity issues fixed:\n- CVE-2016-2339: heap overflow vulnerability in the Fiddle::Function.new'initialize' (bsc#1018808)\n- CVE-2015-7551: Unsafe tainted string usage in Fiddle and DL (bsc#959495)\n- CVE-2015-3900: hostname validation does not work when fetching gems or making API requests (bsc#936032)\n- CVE-2015-1855: Ruby'a OpenSSL extension suffers a vulnerability through overly permissive matching of\n  hostnames (bsc#926974)\n- CVE-2014-4975: off-by-one stack-based buffer overflow in the encodes() function (bsc#887877)\n\nBugfixes:\n- SUSEconnect doesn't handle domain wildcards in no_proxy environment variable properly (bsc#1014863)\n- Segmentation fault after pack \u0026 ioctl \u0026 unpack (bsc#909695)\n- Ruby:HTTP Header injection in 'net/http' (bsc#986630)\n\nChangeLog:\n- http://svn.ruby-lang.org/repos/ruby/tags/v2_1_9/ChangeLog\n","status":"published","published":"2017-04-20T06:35:59Z","modified":"2026-02-04T04:00:33.439608Z","updated_at":"2026-11-02T15:53:43.83457Z"},{"id":"UBUNTU-CVE-2014-4975","description":"Off-by-one error in the encodes function in pack.c in Ruby 1.9.3 and earlier, and 2.x through 2.1.2, when using certain format string specifiers, allows context-dependent attackers to cause a denial of service (segmentation fault) via vectors that trigger a stack-based buffer overflow.","status":"published","published":"2014-07-17T00:00:00Z","modified":"2026-04-22T09:46:15.48608Z","updated_at":"2026-11-02T15:54:09.010095Z"},{"id":"USN-2397-1","title":"ruby1.8, ruby1.9.1, ruby2.0, ruby2.1 vulnerabilities","description":"Will Wood discovered that Ruby incorrectly handled the encodes() function.\nAn attacker could possibly use this issue to cause Ruby to crash, resulting\nin a denial of service, or possibly execute arbitrary code. The default\ncompiler options for affected releases should reduce the vulnerability to a\ndenial of service. (CVE-2014-4975)\n\nWillis Vandevanter discovered that Ruby incorrectly handled XML entity\nexpansion. An attacker could use this flaw to cause Ruby to consume large\namounts of resources, resulting in a denial of service. (CVE-2014-8080)\n","status":"published","published":"2014-11-04T19:23:16Z","modified":"2026-04-22T09:03:39.80874Z","updated_at":"2026-11-02T16:58:09.227524Z"}]}}