CVE-2018-20452
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.50% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- libxls project/libxls
- Source
- cve@mitre.org
References
- https://github.com/evanmiller/libxls/issues/35Exploit, Third Party Advisory
- https://security.gentoo.org/glsa/202003-64
- https://github.com/evanmiller/libxls/issues/35Exploit, Third Party Advisory
- https://security.gentoo.org/glsa/202003-64
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.