CVE-2020-27798 — 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-763 — Release of Invalid Pointer or Reference4 documents4 sources
Severity
5.5MEDIUMNVD
EPSS
0.1%
top 66.47%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Debian Upx-uclUPX
Timeline
PublishedAug 25
Latest updateAug 26

Description

An invalid memory address reference was discovered in the adjABS function in p_lx_elf.cpp 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:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

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-gqpc-4qr8-j9g3: An invalid memory address reference was discovered in the adjABS function in p_lx_elf↗2022-08-26
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OSV
CVE-2020-27798: An invalid memory address reference was discovered in the adjABS function in p_lx_elf↗2022-08-25
▶

📋Vendor Advisories

1
Debian
CVE-2020-27798: upx-ucl - An invalid memory address reference was discovered in the adjABS function in p_l...↗2020
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CVE-2020-27798 — Debian Upx-ucl vulnerability | cvebase