Untrusted pointer dereference in upx (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-20053
CWE-ID CWE-822
Exploitation vector Network
Public exploit N/A
Vulnerable software
 upx (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Untrusted pointer dereference

EUVDB-ID: #VU23825

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-20053

CWE-ID: CWE-822 - Untrusted Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to invalid memory address dereference within the canUnpack() function in p_mach.cpp. A remote attacker can pass a specially crafted Mach-O file to the application and perform a denial of service attack.


Mitigation

Install update from vendor's website.

Vulnerable software versions

upx (Alpine package): 3.95-r2 - 3.96-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=876cd0b00070b30352575afe4aff651cdeb5eea6


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.



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