CVE-2021-43312 — 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 BufferCWE-787 — Out-of-bounds Write4 documents4 sources
Severity
7.5HIGHNVD
EPSS
0.3%
top 42.62%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
UPXDebian Upx-ucl
Timeline
PublishedMar 24

Description

A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible address. The issue is being triggered in the function PackLinuxElf64::invert_pt_dynamic at p_lx_elf.cpp:5239.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶NVDupx/upx< 4.0.0
▶debiandebian/upx-ucl< upx-ucl 4.2.2-1 (forky)
▶CVEListV5upx/upxupx before 4.0.0-git-c6b9e3c62d15

Patches

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

🔴Vulnerability Details

2
GHSA
GHSA-3rqj-h86c-2fpp: A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible address↗2023-03-24
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OSV
CVE-2021-43312: A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible address↗2023-03-24
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📋Vendor Advisories

1
Debian
CVE-2021-43312: upx-ucl - A heap-based buffer overflow was discovered in upx, during the variable 'bucket'...↗2021
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CVE-2021-43312 — UPX vulnerability | cvebase