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CVE-2021-43311

Date: March 23, 2023

A heap-based buffer overflow was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). The problem is essentially caused in PackLinuxElf32::elf_lookup() at p_lx_elf.cpp:5382.

Language: C++

Severity Score

Related Resources (4)

https://github.com/upx/upx/issues/380
https://nvd.nist.gov/vuln/detail/CVE-2021-43311
https://security-tracker.debian.org/tracker/CVE-2021-43311
https://www.mend.io/vulnerability-database/CVE-2021-43311

Severity Score

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Out-of-bounds Write

CWE-787

CVSS v3.1

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

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