ldns: When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read...
CVE-2020-19860 is fixed in 6 products on 1 platform, first by ldnsutils 1.7.0-3ubuntu4.1, released January 21, 2022. It is not reported as exploited. Patch Radar priority: Routine.
When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read vulnerability. An attacker can leak information on the heap by constructing a zone file payload.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ldns · Debian 12.15 (bookworm) | 1.8.1-1 | DEBIAN-CVE-2020-19860 | Jan 21, 2022 |
| ldns · Debian 13.5 (trixie) | 1.8.1-1 | DEBIAN-CVE-2020-19860 | Jan 21, 2022 |
| ldns · Debian 14 | 1.8.1-1 | DEBIAN-CVE-2020-19860 | Jan 21, 2022 |
| ldnsutils · Ubuntu 18.04.6 LTS (bionic) | 1.7.0-3ubuntu4.1 | ldnsutils 1.7.0-3ubuntu4.1 | Jan 21, 2022 |
| ldnsutils · Ubuntu 20.04 LTS (focal) | 1.7.0-4.1ubuntu1+esm1 | ldnsutils 1.7.0-4.1ubuntu1+esm1 | Jan 21, 2022 |
| ldnsutils · Ubuntu 22.04.1 LTS (jammy) | 1.7.1-2ubuntu4+esm1 | ldnsutils 1.7.1-2ubuntu4+esm1 | Jan 21, 2022 |
| libldns2 · Ubuntu 18.04.6 LTS (bionic) | 1.7.0-3ubuntu4.1 | libldns2 1.7.0-3ubuntu4.1 | Jan 21, 2022 |
| libldns2 · Ubuntu 20.04 LTS (focal) | 1.7.0-4.1ubuntu1+esm1 | libldns2 1.7.0-4.1ubuntu1+esm1 | Jan 21, 2022 |
| libldns3 · Ubuntu 22.04.1 LTS (jammy) | 1.7.1-2ubuntu4+esm1 | libldns3 1.7.1-2ubuntu4+esm1 | Jan 21, 2022 |
| python-ldns · Ubuntu 18.04.6 LTS (bionic) | 1.7.0-3ubuntu4.1 | python-ldns 1.7.0-3ubuntu4.1 | Jan 21, 2022 |
| python-ldns · Ubuntu 20.04 LTS (focal) | 1.7.0-4.1ubuntu1+esm1 | python-ldns 1.7.0-4.1ubuntu1+esm1 | Jan 21, 2022 |
| python3-ldns · Ubuntu 18.04.6 LTS (bionic) | 1.7.0-3ubuntu4.1 | python3-ldns 1.7.0-3ubuntu4.1 | Jan 21, 2022 |
| python3-ldns · Ubuntu 20.04 LTS (focal) | 1.7.0-4.1ubuntu1+esm1 | python3-ldns 1.7.0-4.1ubuntu1+esm1 | Jan 21, 2022 |
| python3-ldns · Ubuntu 22.04.1 LTS (jammy) | 1.7.1-2ubuntu4+esm1 | python3-ldns 1.7.1-2ubuntu4+esm1 | Jan 21, 2022 |
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