CVE-2020-27801 — Improper Restriction of Operations within the Bounds of a Memory Buffer in Upx-ucl

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-125 — Out-of-bounds Read4 documents4 sources
Severity
7.8HIGHNVD
EPSS
0.1%
top 64.98%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Debian Upx-uclUPX
Timeline
PublishedAug 25
Latest updateAug 26

Description

A heap-based buffer over-read was discovered in the get_le64 function in bele.h in UPX 4.0.0 via a crafted Mach-O file.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages3 packages

▶debiandebian/upx-ucl< upx-ucl 4.2.2-1 (forky)
▶CVEListV5upx/upxupx 4.0.0-git-87b73e5cfdc1+
▶NVDupx/upx4.0.0

🔴Vulnerability Details

2
GHSA
GHSA-hrvc-4vxq-q985: A heap-based buffer over-read was discovered in the get_le64 function in bele↗2022-08-26
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OSV
CVE-2020-27801: A heap-based buffer over-read was discovered in the get_le64 function in bele↗2022-08-25
▶

📋Vendor Advisories

1
Debian
CVE-2020-27801: upx-ucl - A heap-based buffer over-read was discovered in the get_le64 function in bele.h ...↗2020
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CVE-2020-27801 — Debian Upx-ucl vulnerability | cvebase