# CVE-2020-27788: upx-ucl: An out-of-bounds read access vulnerability was discovered in UPX in PackLinuxElf64::canPack() function of p_lx_elf.cp...

CVE-2020-27788 is fixed in upx-ucl on 1 platform, first by DEBIAN-CVE-2020-27788, released August 18, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-27788
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0033
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 18, 2022

## Description

An out-of-bounds read access vulnerability was discovered in UPX in PackLinuxElf64::canPack() 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | upx-ucl Debian 13.5 (trixie) | 3.96-1 | [DEBIAN-CVE-2020-27788](https://patchblox.com/security/data/fix/linux/debian-cve-2020-27788.md) | Aug 18, 2022 |
| Linux | upx-ucl Debian 14 | 3.96-1 | [DEBIAN-CVE-2020-27788](https://patchblox.com/security/data/fix/linux/debian-cve-2020-27788.md) | Aug 18, 2022 |

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