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CVE-2021-30500

Date: May 26, 2021

Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf.cpp,in version UPX 4.0.0. That allow attackers to execute arbitrary code and cause a denial of service via a crafted file.

Language: C

Severity Score

7.8

Related Resources (9)

Url: https://github.com/upx/upx/commit/90279abdfcd235172eab99651043051188938dcc

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-30500

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-30500

Url: https://bugzilla.redhat.com/show_bug.cgi?id=1948692

Url: https://security-tracker.debian.org/tracker/CVE-2021-30500

Url: https://bugzilla.redhat.com/show_bug.cgi?id=1948696

Url: https://security.archlinux.org/CVE-2021-30500

Url: https://github.com/upx/upx/issues/485

Url: https://www.mend.io/vulnerability-database/CVE-2021-30500

Severity Score

7.8

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:	7.8
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	6.8
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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