CVE-2023-23456
Fixed in a distro release EPSS <1%CVSS 5.3
A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file. The flow allows an attacker to cause a denial of service (abort) via a crafted file.
Products: upx, fedoraproject fedora
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | upx | 5.0.0-r0 |
| Chainguard | upx-doc | 5.0.0-r0 |
| Debian 11 | upx-ucl | 3.96-2+deb11u1 |
| Debian 13 | upx-ucl | 4.2.2-1 |
| Debian 14 | upx-ucl | 4.2.2-1 |
| SUSE Package Hub 15 SP4 | upx | 4.0.2-bp154.4.6.1 |
| Ubuntu 24.04 LTS | upx-ucl | no fix |
| Ubuntu 25.10 | upx-ucl | no fix |
| Ubuntu 26.04 LTS | upx-ucl | no fix |
| Ubuntu 26.10 | upx-ucl | no fix |
| Wolfi | upx | 5.0.0-r0 |
| Wolfi | upx-doc | 5.0.0-r0 |
| openSUSE Leap 15.4 | upx | 4.0.2-bp154.4.6.1 |