CVE-2020-27787 — Improper Restriction of Operations within the Bounds of a Memory Buffer in UPX

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer4 documents4 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 85.16%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
UPXDebian Upx-ucl
Timeline
PublishedAug 18
Latest updateAug 19

Description

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.

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

▶NVDupx/upx< 3.96
▶debiandebian/upx-ucl< upx-ucl 3.96-1 (bullseye)
▶CVEListV5upx/upxFixed in v3.96.

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-4rhf-85wr-9pxc: A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf↗2022-08-19
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OSV
CVE-2020-27787: A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf↗2022-08-18
▶

📋Vendor Advisories

1
Debian
CVE-2020-27787: upx-ucl - A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_e...↗2020
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CVE-2020-27787 — UPX vulnerability | cvebase