#VU29242 Key management errors in heimdal - CVE-2019-12098
Published: June 25, 2020
Vulnerability identifier: #VU29242
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-12098
CWE-ID: CWE-320
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
heimdal
heimdal
Software vendor:
Heimdal Software
Heimdal Software
Description
The vulnerability allows a remote attacker to perform a Man-in-the-Middle (MitM) attack.
The vulnerability exists due to Heimdal fails to verify anonymous PKINIT PA-PKINIT-KX key exchange within the krb5_init_creds_step() function in lib/krb5/init_creds_pw.c. A remote attacker can perform a MitM attack against the Heimdal client.
Remediation
Install updates from vendor's website.
External links
- 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
- http://www.h5l.org/pipermail/heimdal-announce/2019-May/000009.html
- https://github.com/heimdal/heimdal/commit/2f7f3d9960aa6ea21358bdf3687cee5149aa35cf
- 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