VDB
CVE-2021-30501
CVE-2021-30501
PUBLISHED
CVSS 5.5 MEDIUM
An assertion abort was found in upx MemBuffer::alloc() in mem.cpp, in version UPX 4.0.0. The flow allows attackers to cause a denial of service (abort) via a crafted file.
EPSS 1.04% · 63.5th percentile
Risk Scores
CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score
1.04%
63.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:22.04:LTS | upx-ucl | 3.96-3, 3.96-2, 0 |
| Ubuntu:16.04:LTS | upx-ucl | 3.91-1, 0 |
| Ubuntu:18.04:LTS | upx-ucl | 3.94-4, 3.94-3, 3.94-2 |
| Ubuntu:25.10 | upx-ucl | 0, 4.2.4-1, 4.2.4-1.1 |
| Ubuntu:20.04:LTS | upx-ucl | 0, 3.95-2, 3.95-2build1 |
| Ubuntu:24.04:LTS | upx-ucl | 4.2.2-3, 3.96-3, 0 |
Timeline
- May 26, 2021 CVE Published
- May 27, 2021 EPSS Score
- Jul 30, 2021 EPSS Score
- Sep 30, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 1, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Apr 4, 2022 EPSS Score
- Jun 5, 2022 EPSS Score
- Oct 8, 2022 EPSS Score
- Dec 9, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-30501 advisory
- https://github.com/upx/upx/issues/486 discussion
- https://github.com/upx/upx/pull/487 fix
- https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46 fix
- https://bugzilla.redhat.com/show_bug.cgi?id=1948696 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-30501 third-party-advisory