CVE-2021-30500 — NULL Pointer Dereference in Upx-ucl

CWE-476 — NULL Pointer Dereference4 documents4 sources
Severity
7.8HIGHNVD
EPSS
0.3%
top 48.40%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Debian Upx-uclUPXFedoraproject Fedora+1 more
Timeline
PublishedMay 27
Latest updateMay 24

Description

Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf.cpp,in version UPX 4.0.0. That allow attackers to execute arbitrary code and cause a denial of service via a crafted 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
▶NVDupx/upx4.0.0

Also affects: Fedora 33, Enterprise Linux 7.0

Patches

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

🔴Vulnerability Details

2
GHSA
GHSA-5339-45c2-mh5v: Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf↗2022-05-24
▶
OSV
CVE-2021-30500: Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf↗2021-05-27
▶

📋Vendor Advisories

1
Debian
CVE-2021-30500: upx-ucl - Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf....↗2021
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CVE-2021-30500 — NULL Pointer Dereference in Upx-ucl | cvebase