Vulnerability identifier: #VU23827

Vulnerability 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

Exploitation vector: Network

Exploit availability: No

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

Vendor: UPX

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

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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/

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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.