CVE-2018-18585

Name: CVE-2018-18585
Creator: NVD / NIST
Published: 2018-10-23T02:29:00.513+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 3.06%

Last modified Jun 17, 2026

CVE-2018-18585 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. chmd_read_headers in mspack/chmd.c in libmspack before 0.8alpha accepts a filename that has '\0' as its first or second character (such as the "/\0" name).. EPSS estimates a 3.06% chance of exploitation in the next 30 days.

Description

chmd_read_headers in mspack/chmd.c in libmspack before 0.8alpha accepts a filename that has '\0' as its first or second character (such as the "/\0" name).

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

EPSS Probability

3.06%

85.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions	Update
Kyzer	Libmspack	0.3	Alpha
Kyzer	Libmspack	0.4	Alpha
Kyzer	Libmspack	0.5	Alpha
Kyzer	Libmspack	0.6	Alpha
Kyzer	Libmspack	0.7	Alpha
Debian	Debian Linux	8.0	—
Redhat	Enterprise Linux Desktop	7.0	—
Redhat	Enterprise Linux Server	7.0	—
Redhat	Enterprise Linux Workstation	7.0	—
Canonical	Ubuntu Linux	12.04	—
Canonical	Ubuntu Linux	14.04	—
Canonical	Ubuntu Linux	16.04	—
Canonical	Ubuntu Linux	18.04	—
Canonical	Ubuntu Linux	18.10	—
Suse	Linux Enterprise Server	11	Sp3
Suse	Linux Enterprise Server	12	Ga
Starwindsoftware	Starwind Virtual San	All versions	—

References

https://access.redhat.com/errata/RHSA-2019:2049Third Party Advisory
https://bugs.debian.org/911637Issue Tracking, Mailing List, Third Party Advisory
https://github.com/kyz/libmspack/commit/8759da8db6ec9e866cb8eb143313f397f925bb4fExploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/10/msg00017.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/201903-20Third Party Advisory
https://usn.ubuntu.com/3814-1/Third Party Advisory
https://usn.ubuntu.com/3814-2/Third Party Advisory
https://usn.ubuntu.com/3814-3/Third Party Advisory
https://www.openwall.com/lists/oss-security/2018/10/22/1Mailing List, Patch, Third Party Advisory
https://www.starwindsoftware.com/security/sw-20181213-0002/Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2049Third Party Advisory
https://bugs.debian.org/911637Issue Tracking, Mailing List, Third Party Advisory
https://github.com/kyz/libmspack/commit/8759da8db6ec9e866cb8eb143313f397f925bb4fExploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/10/msg00017.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/201903-20Third Party Advisory
https://usn.ubuntu.com/3814-1/Third Party Advisory
https://usn.ubuntu.com/3814-2/Third Party Advisory
https://usn.ubuntu.com/3814-3/Third Party Advisory
https://www.openwall.com/lists/oss-security/2018/10/22/1Mailing List, Patch, Third Party Advisory
https://www.starwindsoftware.com/security/sw-20181213-0002/Third Party Advisory

Timeline

Published: Oct 23, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-18585?

chmd_read_headers in mspack/chmd.c in libmspack before 0.8alpha accepts a filename that has '\0' as its first or second character (such as the "/\0" name).

How severe is CVE-2018-18585?

CVE-2018-18585 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 3.06% probability of exploitation in the next 30 days.

How do I fix CVE-2018-18585?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-18585?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST