VDB
CVE-2017-11103
CVE-2017-11103
PUBLISHED
Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it obtains service-principal names in a way that violates the Kerberos 5 protocol specification. In _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored in 'enc_part' instead of the unencrypted version stored in 'ticket'. Use of the unencrypted version provides an opportunity for successful server impersonation and other attacks. NOTE: this CVE is only for Heimdal and other products that embed Heimdal code; it does not apply to other instances in which this part of the Kerberos 5 protocol specification is violated.
EPSS 5.64% · 90.5th percentile
Risk Scores
EPSS Score
5.64%
90.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:14.04:LTS | heimdal | 1.6~git20120403+dfsg1-3ubuntu0.1, 1.6~git20131207+dfsg-1ubuntu1, 1.6~git20131207+dfsg-1ubuntu1.1 |
| Ubuntu:16.04:LTS | heimdal | 0, 1.6~rc2+dfsg-10ubuntu1, * |
| Ubuntu:16.04:LTS | samba | 0, 2:4.1.17+dfsg-4ubuntu2, 2:4.1.20+dfsg-1ubuntu1 |
| Ubuntu:14.04:LTS | samba | *, *, 0 |
Timeline
- Jul 10, 2017 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
- Mar 7, 2023 EPSS Score
- Mar 11, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2017-11103 third-party-advisory
- https://orpheus-lyre.info/ third-party-advisory
- https://github.com/heimdal/heimdal/commit/6dd3eb836bbb80a00ffced4ad57077a1cdf227ea third-party-advisory
- https://www.samba.org/samba/security/CVE-2017-11103.html third-party-advisory
- http://www.h5l.org/advisories.html?show=2017-07-11 third-party-advisory
- https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0 third-party-advisory
- https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.asc third-party-advisory
- https://www.orpheus-lyre.info/ third-party-advisory
- https://ubuntu.com/security/notices/USN-3353-2 vendor-advisory
- https://ubuntu.com/security/notices/USN-3353-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-3353-3 vendor-advisory
- https://ubuntu.com/security/notices/USN-3353-4 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2017-11103 third-party-advisory