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CVE-2018-18584

Date: October 22, 2018

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.

Language: C

Severity Score

6.5

Related Resources (17)

Url: https://security-tracker.debian.org/tracker/CVE-2018-18584

Url: https://access.redhat.com/errata/RHSA-2019:2049

Url: https://www.openwall.com/lists/oss-security/2018/10/22/1

Url: https://access.redhat.com/security/cve/CVE-2018-18584

Url: https://github.com/kyz/libmspack/commit/40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2

Url: https://usn.ubuntu.com/3814-3/

Url: https://usn.ubuntu.com/3814-2/

Url: https://www.cabextract.org.uk/#changes

Url: https://usn.ubuntu.com/3814-1/

Url: https://lists.debian.org/debian-lts-announce/2018/10/msg00017.html

Url: https://security.gentoo.org/glsa/201903-20

Url: https://www.starwindsoftware.com/security/sw-20181213-0001/

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2018-18584

Url: https://security.alpinelinux.org/vuln/CVE-2018-18584

Url: https://nvd.nist.gov/vuln/detail/CVE-2018-18584

Url: https://bugs.debian.org/911640

Url: https://www.mend.io/vulnerability-database/CVE-2018-18584

Severity Score

6.5

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:	6.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	4.3
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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