CVE-2018-18584 Information

Description

In mspack/cab.h in libmspack before 0.8alpha and cabextract before 1.8 the CAB block input buffer is one byte too small for the maximal Quantum block leading to an out-of-bounds write.

CVSS Vector

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

Reference

https://access.redhat.com/errata/RHSA-2019:2049 https://access.redhat.com/security/cve/cve-2018-18584 https://bugs.debian.org/911640 https://github.com/kyz/libmspack/commit/40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2 https://lists.debian.org/debian-lts-announce/2018/10/msg00017.html https://packetstormsecurity.com/files/150310/Ubuntu-Security-Notice-USN-3814-3.html https://security.gentoo.org/glsa/201903-20 https://usn.ubuntu.com/3814-1/ https://usn.ubuntu.com/3814-2/ https://usn.ubuntu.com/3814-3/ https://www.cabextract.org.uk/changes https://www.openwall.com/lists/oss-security/2018/10/22/1 https://www.suse.com/security/cve/CVE-2018-18584/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5