Vulnerability identifier: #VU30279

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-20805

CWE-ID: CWE-190

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
UPX
Universal components / Libraries / Libraries used by multiple products

Vendor: UPX

Description

The vulnerability allows a local non-authenticated attacker to perform a denial of service (DoS) attack.

p_lx_elf.cpp in UPX before 3.96 has an integer overflow during unpacking via crafted values in a PT_DYNAMIC segment.

Mitigation
Install update from vendor's website.

Vulnerable software versions

UPX: 3.00 - 3.95

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External links
http://github.com/upx/upx/commit/8be9da8280dfa69d5df4417d4d81bda1cab78010
http://github.com/upx/upx/issues/317

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.