CVE-2018-14647
First published: Fri Sep 21 2018(Updated: )
A flaw was found in python's _elementtree.c module, a wrapper for libexpat XML parser. xml.etree C accelerator don't call XML_SetHashSalt(), failing to properly initiate the random hash seed from a good CSPRNG source and making hash collision attacks with carefully crafted XML data easier. Upstream bug: <a href="https://bugs.python.org/issue34623">https://bugs.python.org/issue34623</a>.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Python Python | >=2.7.0<=2.7.15 | |
| Python Python | >=3.4.0<=3.4.9 | |
| Python Python | >=3.5.0<=3.5.6 | |
| Python Python | >=3.6.0<=3.6.6 | |
| Python Python | =3.7.0 | |
| Canonical Ubuntu Linux | =12.04 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| Fedoraproject Fedora | =30 | |
| openSUSE Leap | =15.1 | |
| Redhat Enterprise Linux Desktop | =7.0 | |
| Redhat Enterprise Linux Server | =7.0 | |
| Redhat Enterprise Linux Workstation | =7.0 | |
| redhat/python | <3.7.1 | 3.7.1 |
| redhat/python | <3.6.7 | 3.6.7 |
| redhat/python | <2.7.16 | 2.7.16 |
| debian/python2.7 | 2.7.18-8+deb11u1 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
- http://www.securityfocus.com/bid/105396
- http://www.securitytracker.com/id/1041740
- https://access.redhat.com/errata/RHSA-2019:1260
- https://access.redhat.com/errata/RHSA-2019:2030
- https://access.redhat.com/errata/RHSA-2019:3725
- https://bugs.python.org/issue34623
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14647
- https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0@%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html
- https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/
- https://usn.ubuntu.com/3817-1/
- https://usn.ubuntu.com/3817-2/
- https://www.debian.org/security/2018/dsa-4306
- https://www.debian.org/security/2018/dsa-4307
- https://launchpad.net/bugs/cve/CVE-2018-14647
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1632089
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1632084
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1632085
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1632088
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1632091
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1632092
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1632086
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1632087
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1632093
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1632090
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1343085
- https://github.com/libexpat/libexpat/pull/30/commits
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1632531
- https://access.redhat.com/errata/RHSA-2020:1268
- https://access.redhat.com/errata/RHSA-2020:1346
- https://access.redhat.com/errata/RHSA-2020:1462
- https://bugzilla.redhat.com/show_bug.cgi?id=1631822
- https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/
- https://github.com/python/cpython/commit/cb5778f00ce48631c7140f33ba242496aaf7102b
- https://github.com/python/cpython/commit/470a435f3b42c9be5fdb7f7b04f3df5663ba7305
- https://github.com/python/cpython/commit/f7666e828cc3d5873136473ea36ba2013d624fa1
- https://github.com/python/cpython/commit/18b20bad75b4ff0486940fba4ec680e96e70f3a2
- https://security-tracker.debian.org/tracker/CVE-2018-14647
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14647
- https://nvd.nist.gov/vuln/detail/CVE-2018-14647
- https://ubuntu.com/security/CVE-2018-14647
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