Multiple vulnerabilities in heimdal
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2018-5349 CVE-2018-5731 |
| CWE-ID | CWE-732 CWE-20 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
heimdal Server applications / Encryption software |
| Vendor | Heimdal Software |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Incorrect permission assignment for critical resource
EUVDB-ID: #VU37375
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-5349
CWE-ID:
CWE-732 - Incorrect Permission Assignment for Critical Resource
Exploit availability: No
DescriptionThe vulnerability allows a local authenticated user to execute arbitrary code.
A vulnerability has been found in Heimdal PRO v2.2.190, but it is most likely also present in Heimdal FREE and Heimdal CORP. Faulty permissions on the directory "C:ProgramDataHeimdal SecurityHeimdal Agent" allow BUILTINUsers to write new files to the directory. On startup, the process Heimdal.MonitorServices.exe running as SYSTEM will attempt to load version.dll from this directory. Placing a malicious version.dll in this directory will result in privilege escalation. NOTE: any affected Heimdal products are completely unrelated to the Heimdal vendor of a Kerberos 5 product on the h5l.org web site.
MitigationInstall update from vendor's website.
Vulnerable software versionsheimdal: 2.2.190
External linkshttp://improsec.com/blog/heimdal-advisory-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Input validation error
EUVDB-ID: #VU37376
Risk: Low
CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-5731
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a local authenticated user to execute arbitrary code.
An issue was discovered in Heimdal PRO 2.2.190. As part of the scanning feature, a process called md.hs writes an executable called CS1.tmp to C:windowsTEMP. Afterwards the executable is run. It is possible for an attacker to create the file first, let md.hs overwrite it, and then rewrite the file in the window between md.hs closing the file and executing it. This can be exploited via opportunistic locks and a high priority thread. The vulnerability is triggered when a scan starts. NOTE: any affected Heimdal products are completely unrelated to the Heimdal vendor of a Kerberos 5 product on the h5l.org web site.
MitigationInstall update from vendor's website.
Vulnerable software versionsheimdal: 2.2.190
External linkshttp://improsec.com/blog/heimdal-advisory-2
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
