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CVE-2019-20021

Date: December 26, 2019

A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.

Language: C

Severity Score

5.5

Related Resources (12)

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2019-20021

Url: http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/

Url: https://github.com/upx/upx/issues/315

Url: http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html

Url: https://security-tracker.debian.org/tracker/CVE-2019-20021

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/

Url: https://nvd.nist.gov/vuln/detail/CVE-2019-20021

Url: https://security.alpinelinux.org/vuln/CVE-2019-20021

Url: https://www.mend.io/vulnerability-database/CVE-2019-20021

Severity Score

5.5

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:	5.5
Attack Vector (AV):	LOCAL
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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