CVE-2018-20452 — HIGH (8.8)

Vulnerability Description

The read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file, because of inconsistent memory management (new versus free) in ole2_read_header in ole.c.

CVSS Score

8.8

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Libxls Project	Libxls	1.4.0

Related Weaknesses (CWE)

CWE-119

References

https://github.com/evanmiller/libxls/issues/35ExploitThird Party Advisory
https://security.gentoo.org/glsa/202003-64
https://github.com/evanmiller/libxls/issues/35ExploitThird Party Advisory
https://security.gentoo.org/glsa/202003-64

FAQ

What is CVE-2018-20452?

CVE-2018-20452 is a vulnerability with a CVSS score of 8.8 (HIGH). The read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted ...

How severe is CVE-2018-20452?

CVE-2018-20452 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-20452?

Check the references section above for vendor advisories and patch information. Affected products include: Libxls Project Libxls.