CVE-2019-12098
First published: Wed May 15 2019(Updated: )
In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5_init_creds_step in lib/krb5/init_creds_pw.c.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/heimdal | <=7.1.0+dfsg-13+deb9u2<=7.1.0+dfsg-13<=7.5.0+dfsg-2.1 | 7.5.0+dfsg-3 7.1.0+dfsg-13+deb9u3 |
| Heimdal Project Heimdal | <7.6.0 | |
| Fedoraproject Fedora | =30 | |
| Fedoraproject Fedora | =31 | |
| openSUSE Backports SLE | =15.0 | |
| openSUSE Backports SLE | =15.0-sp1 | |
| openSUSE Leap | =15.0 | |
| openSUSE Leap | =15.1 | |
| openSUSE Leap | =42.3 | |
| Debian Debian Linux | =9.0 | |
| debian/heimdal | 7.7.0+dfsg-2+deb11u3 7.8.git20221117.28daf24+dfsg-2 7.8.git20221117.28daf24+dfsg-8 |
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Reference Links
- https://security-tracker.debian.org/tracker/CVE-2019-12098
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12098
- http://www.h5l.org/pipermail/heimdal-announce/2019-May/000009.html
- https://github.com/heimdal/heimdal/commit/2f7f3d9960aa6ea21358bdf3687cee5149aa35cf
- https://www.samba.org/samba/security/CVE-2018-16860.html
- https://security-tracker.debian.org/tracker/CVE-2018-16860
- https://github.com/heimdal/heimdal/pull/555
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=929064
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00002.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00026.html
- https://github.com/heimdal/heimdal/compare/3e58559...bbafe72
- https://github.com/heimdal/heimdal/releases/tag/heimdal-7.6.0
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GIXEDVVMPD6ZAJSMI2EZ7FNEIVNWE5PD/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SLXXIF4LOQEAEDAF4UGP2AO6WDNTDFUB/
- https://seclists.org/bugtraq/2019/Jun/1
- https://www.debian.org/security/2019/dsa-4455
- https://launchpad.net/bugs/cve/CVE-2019-12098
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GIXEDVVMPD6ZAJSMI2EZ7FNEIVNWE5PD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SLXXIF4LOQEAEDAF4UGP2AO6WDNTDFUB/
- https://github.com/heimdal/heimdal/commit/a1ef548600c5bb51cf52a9a9ea12676506ede19f
- https://nvd.nist.gov/vuln/detail/CVE-2019-12098
- https://ubuntu.com/security/CVE-2019-12098
Frequently Asked Questions
What is CVE-2019-12098?
CVE-2019-12098 is a vulnerability in the client side of Heimdal before 7.6.0 that allows for a man-in-the-middle attack by not verifying anonymous PKINIT PA-PKINIT-KX key exchange.
Which software versions are affected by CVE-2019-12098?
The affected software versions include Heimdal 7.5.0+dfsg-1ubuntu0.1, Heimdal 1.6~ on Ubuntu Trusty, Heimdal 7.6 on Ubuntu (upstream), and Heimdal 1.7~ on Ubuntu Xenial.
What is the severity of CVE-2019-12098?
CVE-2019-12098 has a severity rating of high (7 out of 10).
How can I fix CVE-2019-12098?
To fix CVE-2019-12098, update Heimdal to version 7.6.0 or later.
Where can I find more information about CVE-2019-12098?
You can find more information about CVE-2019-12098 on the MITRE CVE database, Heimdal mailing list, and GitHub.
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