CVE-2021-3402 · cross-distro fix matrix

CVE-2021-3402: An integer overflow and several buffer overflow reads in libyara/modules/macho/macho.c in YARA v4.0.3 and earlier could allow an attacker to either cause denial of service or information disclosure via a malicious Mach-O file. Affects all versions before libyara 4.0.4

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-3402 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

yara→ fixed in4.0.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y yara
```

Debian bookworm

Source: Debian Security Tracker

yara→ fixed in4.0.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y yara
```

Debian trixie

Source: Debian Security Tracker

yara→ fixed in4.0.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y yara
```

Are YOU affected by CVE-2021-3402?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

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