CVE-2017-6594
The transit path validation code in Heimdal before 7.3 might allow attackers to bypass the capath policy protection mechanism by leveraging failure to add the previous hop realm to the transit path of issued tickets.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.76%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The transit path validation code in Heimdal before 7.3 might allow attackers to bypass the capath policy protection mechanism by leveraging failure to add the previous hop realm to the transit path of issued tickets.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.76% probability · 78th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-295
- Affected
- heimdal project/heimdal · opensuse/leap
- Source
- cve@mitre.org
EPSS 1.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-updates/2017-08/msg00062.htmlThird Party Advisory
- http://www.h5l.org/advisories.html?show=2017-04-13Vendor Advisory
- https://github.com/heimdal/heimdal/commit/b1e699103f08d6a0ca46a122193c9da65f6cf837Issue Tracking, Patch, Third Party Advisory
- https://github.com/heimdal/heimdal/releases/tag/heimdal-7.3.0Issue Tracking, Patch, Third Party Advisory
- http://lists.opensuse.org/opensuse-updates/2017-08/msg00062.htmlThird Party Advisory
- http://www.h5l.org/advisories.html?show=2017-04-13Vendor Advisory
- https://github.com/heimdal/heimdal/commit/b1e699103f08d6a0ca46a122193c9da65f6cf837Issue Tracking, Patch, Third Party Advisory
- https://github.com/heimdal/heimdal/releases/tag/heimdal-7.3.0Issue Tracking, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.