CVE-2020-27787

low-risk

Published 2022-08-18

A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf.cpp. An attacker with a crafted input file allows invalid memory address access that could lead to a denial of service.

Do I need to act?

0.05% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.5/10 Medium

LOCAL / LOW complexity

Affected Products (1)

Upx

Affected Vendors

Upx

References (4)

Patch https://github.com/upx/upx/commit/e2f60adc95334f47e286838dac33160819c5d74d

Exploit https://github.com/upx/upx/issues/333

Patch https://github.com/upx/upx/commit/e2f60adc95334f47e286838dac33160819c5d74d

Exploit https://github.com/upx/upx/issues/333

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low-risk

Severity 18/34 · Moderate

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal