| Name | CVE-2020-27790 |
| Description | A floating point exception issue was discovered in UPX in PackLinuxElf64::invert_pt_dynamic() function of p_lx_elf.cpp file. An attacker with a crafted input file could trigger this issue that could cause a crash leading to a denial of service. The highest impact is to Availability. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| upx-ucl (PTS) | jessie | 3.91-1 | vulnerable |
| stretch | 3.91-4 | vulnerable |
| buster | 3.95-1 | vulnerable |
| bullseye | 3.96-2 | fixed |
| bullseye (security) | 3.96-2+deb11u1 | fixed |
| sid, trixie | 4.2.4-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| upx-ucl | source | (unstable) | 3.96-1 | unimportant | | |
Notes
https://github.com/upx/upx/issues/331
https://github.com/upx/upx/commit/eb90eab6325d009004ffb155e3e33f22d4d3ca26 (v3.96)