Integer overflow in UPX

Published: 2020-01-29 | Updated: 2022-11-17

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2019-14295
CWE-ID	CWE-190
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	UPX Universal components / Libraries / Libraries used by multiple products
Vendor	UPX

Security Bulletin

This security bulletin contains information about 1 vulnerabilities.

This bulletin was created to describe a not fixed vulnerability, previously reported in SB2018051818.

Updated list of vulnerable UPX versions.

1) Integer overflow

EUVDB-ID: #VU23827

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-14295

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows an attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to integer overflow in getElfSections() function in p_vmlinx.cpp via a skewed offset larger than the size of the PE section in a UPX packed executable. An attacker can create a specially crafted file, trigger integer overflow and trigger an allocation of excessive memory.

Mitigation

Install update from vendor's website.

Vulnerable software versions

UPX: 3.95 - 3.96

External links

http://github.com/upx/upx/issues/286
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MOCJ43HTM45GZCAQ2FLEBDNBM76V22RG/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T52JATXV6NTPTMGXCRGT37H6KXERYNZN/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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