Bug 1176035 (CVE-2014-9294)
| Summary: | CVE-2014-9294 ntp: ntp-keygen uses weak random number generator and seed when generating MD5 keys | ||
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| Product: | [Other] Security Response | Reporter: | Huzaifa S. Sidhpurwala <huzaifas> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | carnil, fkrska, fweimer, jrusnack, mdshaikh, mjc, mlichvar, ovasik, sardella, security-response-team, thozza, vkaigoro |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | ntp 4.2.8 | Doc Type: | Bug Fix |
| Doc Text: |
It was found that ntp-keygen used a weak method for generating MD5 keys. This could possibly allow an attacker to guess generated MD5 keys that could then be used to spoof an NTP client or server. Note: it is recommended to regenerate any MD5 keys that had explicitly been generated with ntp-keygen; the default installation does not contain such keys.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2014-12-20 02:46:51 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1176067, 1176068, 1176069, 1176070, 1176100, 1176191, 1176680, 1182167 | ||
| Bug Blocks: | 1176041 | ||
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Description
Huzaifa S. Sidhpurwala
2014-12-19 08:56:05 UTC
Upstream change to the NEWS file with details quoted in comment 0: http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=5493dc3dofY6drKJde9W-5O1M3s4eg This seems to be the seeding fix applied between 4.2.7p229 and 4.2.7p230: http://bk1.ntp.org/ntp-dev/util/ntp-keygen.c?PAGE=diffs&REV=4eae1b72298KRoBQmX-y8URCiRPH5g Upstream bug: http://bugs.ntp.org/show_bug.cgi?id=2666 There is another recent change in 4.2.8 which makes ntp use OpenSSL or arc4random for key generation: http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=548db6ddlELn4rnqUZ4kKGOjvtXwbQ External References: https://access.redhat.com/articles/1305723 http://support.ntp.org/bin/view/Main/SecurityNotice#non_cryptographic_random_number Created ntp tracking bugs for this issue: Affects: fedora-all [bug 1176191] This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Via RHSA-2014:2025 https://rhn.redhat.com/errata/RHSA-2014-2025.html This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Via RHSA-2014:2024 https://rhn.redhat.com/errata/RHSA-2014-2024.html ntp-4.2.6p5-19.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report. ntp-4.2.6p5-25.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report. ntp-4.2.6p5-13.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report. This issue has been addressed in the following products: Red Hat Enterprise Linux 6.5 EUS - Server and Compute Node Only Via RHSA-2015:0104 https://rhn.redhat.com/errata/RHSA-2015-0104.html |