CVE-2018-10403 — HIGH (7.8)

Vulnerability Description

An issue was discovered in F-Secure XFENCE and Little Flocker. A maliciously crafted Universal/fat binary can evade third-party code signing checks. By not completing full inspection of the Universal/fat binary, the user of the third-party tool will believe that the code is signed by Apple, but the malicious unsigned code will execute.

CVSS Score

7.8

HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
F-Secure	Xfence	-

Related Weaknesses (CWE)

CWE-295

References

https://www.okta.com/security-blog/2018/06/issues-around-third-party-apple-code-ExploitThird Party Advisory
https://www.okta.com/security-blog/2018/06/issues-around-third-party-apple-code-ExploitThird Party Advisory

FAQ

What is CVE-2018-10403?

CVE-2018-10403 is a vulnerability with a CVSS score of 7.8 (HIGH). An issue was discovered in F-Secure XFENCE and Little Flocker. A maliciously crafted Universal/fat binary can evade third-party code signing checks. By not completing full inspection of the Universal/...

How severe is CVE-2018-10403?

CVE-2018-10403 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-10403?

Check the references section above for vendor advisories and patch information. Affected products include: F-Secure Xfence.