CVE-2021-20285 — MEDIUM (6.6)

Vulnerability Description

A flaw was found in upx canPack in p_lx_elf.cpp in UPX 3.96. This flaw allows attackers to cause a denial of service (SEGV or buffer overflow and application crash) or possibly have unspecified other impacts via a crafted ELF. The highest threat from this vulnerability is to system availability.

CVSS Score

6.6

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

HIGH

Affected Products

Vendor	Product	Versions
Upx	Upx	3.96

Related Weaknesses (CWE)

CWE-119 CWE-787

References

https://bugzilla.redhat.com/show_bug.cgi?id=1937787Issue TrackingThird Party Advisory
https://github.com/upx/upx/issues/421ExploitIssue TrackingThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1937787Issue TrackingThird Party Advisory
https://github.com/upx/upx/issues/421ExploitIssue TrackingThird Party Advisory

FAQ

What is CVE-2021-20285?

CVE-2021-20285 is a vulnerability with a CVSS score of 6.6 (MEDIUM). A flaw was found in upx canPack in p_lx_elf.cpp in UPX 3.96. This flaw allows attackers to cause a denial of service (SEGV or buffer overflow and application crash) or possibly have unspecified other ...

How severe is CVE-2021-20285?

CVE-2021-20285 has been rated MEDIUM with a CVSS base score of 6.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20285?

Check the references section above for vendor advisories and patch information. Affected products include: Upx Upx.