Bugzilla – Bug 983216
VUL-1: CVE-2016-5300: expat: Re: expat hash collision fix too predictable?
Last modified: 2018-09-28 14:43:08 UTC
CVE-2016-5300 from mitre on oss-sec Please confirm that using CVE-2012-6702 for consequences of "unanticipated internal calls to srand" is what you intended. Yes, we confirm that. (They are unanticipated both because of thread-safety concerns, and because it's possible for an application to have an important dependency on srand being called exactly once.) The hash DoS vulnerability CVE-2012-0876 was fixed to some extend in Expat 2.1.0, commit e3e81a6d ... The next release of Expat will not do internal calls to srand (or rand) any more but extract and use entropy from other sources. ... I suppose hash initialization with (too little /) second-based entropy still is part of the original CVE-2012-0876 (or the same again). Use CVE-2016-5300 for the separate issue in which the original choices of entropy source and RNG did not properly address the possibility of a successful hash DoS attack. In other words, the code changes (in the next release) to fix CVE-2016-5300 are needed because the original fix for CVE-2012-0876 was insufficient. (We use separate CVE IDs when follow-on work is needed to complete the solution to the same original vulnerability finding.) References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-5300 http://seclists.org/oss-sec/2016/q2/473
commit 6acb0a47372a9079cc6ff70c384f015a47f2c34a and following ... repalce rand/srand by some home grown randomness gathering
bugbot adjusting priority
This is an autogenerated message for OBS integration: This bug (983216) was mentioned in https://build.opensuse.org/request/show/441164 Factory / expat
submissions done.
An update workflow for this issue was started. This issue was rated as moderate. Please submit fixed packages until 2017-02-16. When done, reassign the bug to security-team@suse.de. https://swamp.suse.de/webswamp/wf/63374
SUSE-SU-2017:0415-1: An update that solves two vulnerabilities and has one errata is now available. Category: security (moderate) Bug References: 1022037,983215,983216 CVE References: CVE-2012-6702,CVE-2016-5300 Sources used: SUSE Studio Onsite 1.3 (src): expat-2.0.1-88.41.1 SUSE Linux Enterprise Software Development Kit 11-SP4 (src): expat-2.0.1-88.41.1 SUSE Linux Enterprise Server 11-SP4 (src): expat-2.0.1-88.41.1 SUSE Linux Enterprise Debuginfo 11-SP4 (src): expat-2.0.1-88.41.1
SUSE-SU-2017:0424-1: An update that fixes two vulnerabilities is now available. Category: security (moderate) Bug References: 983215,983216 CVE References: CVE-2012-6702,CVE-2016-5300 Sources used: SUSE Linux Enterprise Software Development Kit 12-SP2 (src): expat-2.1.0-20.2 SUSE Linux Enterprise Software Development Kit 12-SP1 (src): expat-2.1.0-20.2 SUSE Linux Enterprise Server for Raspberry Pi 12-SP2 (src): expat-2.1.0-20.2 SUSE Linux Enterprise Server 12-SP2 (src): expat-2.1.0-20.2 SUSE Linux Enterprise Server 12-SP1 (src): expat-2.1.0-20.2 SUSE Linux Enterprise Desktop 12-SP2 (src): expat-2.1.0-20.2 SUSE Linux Enterprise Desktop 12-SP1 (src): expat-2.1.0-20.2
openSUSE-SU-2017:0483-1: An update that fixes two vulnerabilities is now available. Category: security (moderate) Bug References: 983215,983216 CVE References: CVE-2012-6702,CVE-2016-5300 Sources used: openSUSE Leap 42.2 (src): expat-2.1.0-19.1 openSUSE Leap 42.1 (src): expat-2.1.0-20.1
released