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CVE-2019-20021

MEDIUM
5.5
CVSS Score
Published: December 27, 2019 at 01:11 AM UTC
Updated: June 17, 2026 at 02:29 AM UTC
2 products affected across 2 vendorsFedoraUpx

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Severity
MEDIUM5.5
Exploit prediction
EPSS 1%

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (5)

Vendor Advisoryx_refsource_SUSEBroken Link
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html
Vendor Advisoryx_refsource_SUSEBroken Link
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html
x_refsource_MISCExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://github.com/upx/upx/issues/315
Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/
Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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