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CVE-2020-19861 · cross-distro fix matrix

CVE-2020-19861: When a zone file in ldns 1.7.1 is parsed, the function ldns_nsec3_salt_data is too trusted for the length value obtained from the zone file. When the memcpy is copied, the 0xfe - ldns_rdf_size(salt_rdf) byte data can be copied, causing heap overflow information leakage.

Affects 2 Linux releases across 2 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2020-19861 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

  • ldns→ fixed in1.8.1-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y ldns

Debian trixie

Source: Debian Security Tracker

  • ldns→ fixed in1.8.1-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y ldns
Are YOU affected by CVE-2020-19861?

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